A single loop of wire with an area of 0.0820 m2 is in a uniform magnetic field that has an initial value of 3.80 T, is perpendicular to the plane of the loop, and is decreasing at a constant rate of 0.220 T/s .

Required:
a. What emf is induced in this loop?
b. If the loop has a resistance of 0.600Ω, find the current induced in the loop.

Answers

Answer 1

Answer:

a) emf = 0.01804 V

b) I = 0.03 A

Explanation:

a) The emf is calculated by using the following formula:

\(|emf|=|\frac{d\Phi_B}{dt}|=|\frac{d(A\cdot B)}{dt}|\) \(=A|\frac{dB}{dt}|\)

A: area of the loop = 0.0820m^2

B: magnitude of the magnetic field

dB/dt: change of the magnetic field, in time: 0.220 T/s

Where ФB is the magnetic flux, the surface vector and magnetic vector are perpendicular between them, and the area A is constant.

You replace the values of A and dB/dt in the equation (1):

\(|emf|=(0.082m^2)(0.220T/s)=0.01804V\)

b) The current in the loop is:

\(I=\frac{emf}{R}\)

R: resistance of the loop = 0.600Ω

\(I=\frac{0.01804V}{0.600\Omega}=0.03A=30mA\)

Answer 2

a.  The emf induced in this loop is 18.04mV.

b. The current induced in the loop is 30.06mA.

a. We know that,

                        \(flux(\phi)=B*A\)

Where B is magnetic field and A is the area.

  \(emf=\frac{d\phi}{dt}=A*\frac{dB}{dt}\)

Given that,  Area , \(A=0.0820m^{2},B=3.80T,\frac{dB}{dt}=0.220T/s\)

Substituting all values in above equation.

  \(emf=0.0820*0.220=0.01804V=18.04mV\)

b. Resistance, \(R=0.600ohm\)

  Current induced in the loop is,

                \(I=\frac{emf}{R}=18.04/0.6=30.06mA\)

Hence, the emf induced in this loop is 18.04mV.

The current induced in the loop is 30.06mA.

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Related Questions

A uniform 2.0-kg rod that is 0.92 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are 29 N/m and 66 N/m. Find the angle that the rod makes with the horizontal.

Answers

Answer:

11.7°

Explanation:

See attached file

A uniform 2.0-kg rod that is 0.92 m long is suspended at rest from the ceiling by two springs, one at

How much work does the electric field do in moving a proton from a point with a potential of 170 V to a point where it is -50 V

Answers

a) A charged particle accelerates as it moves from location A to location B. If V A = 170 V and V B = 210 V, what is the sign of the charged particle? positive negative (b) A proton gains electric potential energy as it moves from point 1 to point 2.
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Two identical point charges are fixed to diagonally opposite corners of a square that is 1.5 m on a side. Each charge is +2.0 µC. How much work is done by the electric force as one of the charges moves to an empty corner? I have W(fe)= -EPE=-q[V(f)-V(i)].
physics
Two point charges are placed on the x axis. (Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance 9.00m from the origin along the negative x

A rigid body is rotating with constant angular speed 3 radians per second about a fixed axis through the points A. (4, 1, 1), B. (2, -1; 0), distances being measured in centimeters. The rotation is in the left-handed sense relative to the direction AB
1, Determine the unit vector pointing in the direction BA.
2, What is the angular velocity () of the of the body?
3, Write the position vector of point P: P .
Find the instantaneous velocity of particle P [hint v = w×r)
4, What is meant by left-handed rotation (left-handed coordinate system)?
5, Write the position vectors of points A and B The rotation axis AB has direction BA. Write the direction BA in terms of the components given above. ​

Answers

1.Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule.

5.Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA = (-2, -2, -1)

1.To determine the unit vector pointing in the direction BA, we subtract the coordinates of point B from the coordinates of point A and normalize the resulting vector.

The direction vector BA is given by:

BA = (4 - 2, 1 - (-1), 1 - 0) = (2, 2, 1)

To obtain the unit vector in the direction of BA, we divide the direction vector by its magnitude:

|BA| = √(2^2 + 2^2 + 1^2) = √(4 + 4 + 1) = √9 = 3

Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P. Please provide the position of point P to proceed with the calculation.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule. In a left-handed coordinate system, if you curl the fingers of your left hand in the direction of rotation, your thumb will point in the direction of the rotation axis. It is the opposite direction to a right-handed rotation.

5.The position vectors of points A and B are:

Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA can be obtained by subtracting the coordinates of point A from the coordinates of point B:

BA = (2 - 4, -1 - 1, 0 - 1) = (-2, -2, -1)

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Three resistors are connected in parallel to a 12 V battery as shown below. What is
the equivalent resistance of the circuit?
12 V
120 Ω
WW
300,
200 Ω

Answers

The equivalent resistance of the circuit is approximately 60Ω.

According to the question

1. The resistors are connected in parallel.
2. The resistances of the resistors are: R1 = 120Ω, R2 = 300Ω, and R3 = 200Ω.
3. The voltage across the parallel connection is 12V.

To find the equivalent resistance (Req) of the parallel circuit, we can use the formula:

1/Req = 1/R1 + 1/R2 + 1/R3

Now, let's plug in the values of the resistances:

1/Req = 1/120Ω + 1/300Ω + 1/200Ω

To solve for Req, you can follow these steps:

Step 1: Calculate the reciprocals of the resistances:
1/120Ω ≈ 0.00833, 1/300Ω ≈ 0.00333, 1/200Ω ≈ 0.005

Step 2: Add the reciprocals:
0.00833 + 0.00333 + 0.005 = 0.01667

Step 3: Find the reciprocal of the sum:
Req = 1/0.01667 ≈ 60Ω
So, the equivalent resistance of the circuit is approximately 60Ω.

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A 50-kg ice skater turns a bend at 7 m/sec. If the radius of the curve is 5 m, what is the centripetal force in Newtons provided by the friction between the blade of the skate and the ice?

Answers

The centripetal force in Newtons provided by the friction between the blade of the skate and the ice is 490 N

How do i determine the centripetal force?

The following data were obtained from the question:

Mass of ice skater (m) = 50 KgVelocity (v) = 7 m/sRadius (r) = 5 metersCentripetal force (F) =?

The centripetal force can be obtained as illustrated below:

F = mv²/r

= (50 × 7²) / 5

= (50 × 49) / 5

= 2450 / 5

= 490 N

Thus, we can concluded that the centripetal force is 490 N

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Answer it with 1 reason.1.Mirrors having a curved reflecting surface are called as:
a.Plane mirror
b.Spherical mirror
c.Simple mirror
d.None of above
2.Type of spherical mirror are:
aConcave
b.Convex
c.both A and B
d.none of the above
3.Spherical mirror with reflecting surface curved inwards is called ……………
a. convex mirror.
b. concave mirror
c. curved mirror
d. none of the above
4.Spherical mirror with reflecting surface curved ………………… is called concave mirror.
a.Outwards
b.Inwards
c.Backwards
d.none of the above
5.The center of reflecting surface of a spherical mirror is known as……………
a.Pole
b.Aperture
c.Axis
d.Curvature​

Answers

1 a. Spherical Mirror

2. Both A and B

3. Concave mirror

4.Inwards

5. Pole.

These are your answer. You can mark me Brainliest. Thanks.

hope it helps you have a good day

Explanation:

spherical mirror

both A and B

inwards

pole


A 4-kg box is pushed against a flat 1 point
surface with a force of 100 N for 5
meters. The work done on the box is

Answers

Answer:

wd = F * D

wd = 100 * 5

wd = 500

The work done on the box is 500 Joules.

What is work?

When an object is moved over a distance by an external force, at least a portion of which is applied in the direction of the displacement, it is said to have done "work" in physics. By multiplying the length of the path by the component of the force acting along the path, work can be calculated if the force is constant.

As work is a scalar quantity, it can be defined only by magnitude, it has no direction. SI unit of work is Joule and CGS unit of work is erg.

Given parameters:

Mass of the box: m = 4 kg.

Force applied on the box: F = 100 N.

Displacement of the box: d = 5 meters.

Hence, the work done on the box is = applied force × displacement

= 100 N × 5 meters

= 500 Joules.

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As seen in the figure, four points with a distance of 2d between two “neighboring” charges –Q, +Q, -Q and +Q charges “x”
are placed on the axis.

As seen in the figure, four points with a distance of 2d between two neighboring charges Q, +Q, -Q and

Answers

a) The net area revealed by the four charges at the point P on the y-axis will be directed outwards from the origin in a radial direction. This can be shown schematically by arrows pointing away from the origin.

What is radial direction?

Radial direction is a direction that is perpendicular to the tangent of a circle at any given point. It is the same as the radius of a circle and is also known as the normal direction.

b) The contributions of the 1st and 2nd charges to the net area at point P can be expressed as:
Ē₁ =(Q/48πε₀)(1/y)î + (Q/48πε₀)(1/d+y)î
Ē₂ =(Q/48πε₀)(1/d+y)î - (Q/48πε₀)(1/y)î
where Q is the charge of each point, d is the distance between two neighboring charges, y is the distance of point P from the coordinate origin, k is the electrostatic constant and Ī is the unit vector in the x-direction.
c) The net area at point P can be obtained by subtracting the contributions of the 1st and 2nd charges, i.e.,
Enet = Ē₁ - Ē₂ = (Q/48πε₀)(2/d)î
d) Assuming that d = 2cm, Q = 5µC and y = 1m (y >> d), the acceleration of the charge q = - 0.2µC will be given by:
a = qEnet/m = - 0.2µC (Q/48πε₀)(2/d)î/0.5kg = - 0.8µC (Q/48πε₀)î/0.5kg
which is equal to - 6.4 x 10⁻⁶ m/s². The direction of the acceleration will be in the opposite direction of the net area, i.e., towards the origin.
e) The acceleration of charge q does not remain constant during motion because the electric field and thus the net area changes as the charge moves. As the charge moves closer to the origin, the magnitude of the electric field increases, resulting in an increase in the acceleration of the charge. Similarly, as the charge moves further away from the origin, the magnitude of the electric field decreases, resulting in a decrease in the acceleration of the charge.

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A projectile is launched with a velocity of 25 m/s at an angle of 20 degrees with respect to the horizontal. What is its initial velocity along the x-axis?

Select one:
a. 10 m/s
b. 23.49 m/s
c. 18.5 m/s
d. 75 m/s
e. None of the choices give.


A projectile is launched with a velocity of 25 m/s at an angle of 20 degrees with respect to the horizontal. What is its initial velocity along the y-axis?

Select one:
a. 2.09 m.s
b. 4.21 m/s
c. 17.10 m/s
d. 8.55 m/s
e. None of the choices given.

A projectile is launched with a velocity of 25 m/s at an angle of 20 degrees with respect to the horizontal. How long will it take for it to reach the top of its flight?

Select one:
a. 5.21 s
b. 3.28 s
c. 1.74 s
d. .87 s
e. None of the choices given.
A projectile is launched with a velocity of 25 m/s at an angle of 20 degrees with respect to the horizontal. What is its range?



Select one:
a. 40.8 m
b. 81.6 m
c. 33.21 m
d. 20.4
e. None of the choices given.

Answers

Answer:

b. 23.49 m/s

d. 8.55 m/s

d. .87 s

a. 40.8 m

Explanation:

The initial along the x-axis is given by the following formula:

\(V_{ox} = V_{o}Cos\theta\\\\V_{ox} = (25\ m/s)(Cos\ 20^{o})\\\\V_{ox} = 23.49\ m/s\)

Hence, the correct option is:

b. 23.49 m/s

The initial along the x-axis is given by the following formula:

\(V_{oy} = V_{o}Sin\theta\\V_{oy} = (25\ m/s)(Sin\ 20^{o})\\V_{oy} = 8.55\ m/s\)

Hence, the correct option is:

d. 8.55 m/s

Now, for the time to reach maximum height:

\(t = \frac{V_{o}Sin\theta}{g}\\\\t = \frac{(25\ m/s)Sin\ 20^{o}}{9.8\ m/s^{2}}\\\\t = 0.87\ s\)

Hence, the correct option is:

d. .87 s

For the range of projectile:

\(R = \frac{V_{o}^{2}\ Sin\ 2\theta}{g}\\\\R = \frac{(25\ m/s)^{2}(Sin\ 40^{o})}{9.8\ m/s^{2}}\\\\R = 40.9\ m\)

Hence, the closest option is:

a. 40.8 m

A parallel circuit has four branch currents: 120 mA, 380 mA, 250 mA, and 2.1 A. How much current is supplied by the source?

Answers

A parallel circuit is an electrical circuit with more than one current path and all circuit components are connected between the same two sets of electrically common points. The current supplied by the source in a parallel circuit is equal to the sum of all branch currents in the circuit.

The sum of the branch currents in a parallel circuit can be calculated by adding up the values of the individual branch currents. In this case, we have four branch currents: 120 mA, 380 mA, 250 mA, and 2.1 A. Thus, the sum of the branch currents is:120 mA + 380 mA + 250 mA + 2.1 A= 2.85 ATherefore, the current supplied by the source in this parallel circuit is 2.85 A. This is because, in a parallel circuit, the current from the source is split between the different branches of the circuit. Each branch will have a different current, but the sum of all the branch currents will always equal the current supplied by the source

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A uniform electric field is directed upward and has a magnitude of 24 N/C. A charge of -6 C is placed in this
field.


The direction of the force on the charge placed in the electric field is upward.
True or False

Answers

The statement" The direction of the force on the charge placed in the electric field is upward" is false because the direction of the force on a negative charge (-6 C) placed in an upward-directed uniform electric field of magnitude 24 N/C would be downward.

The direction of the force on a charged particle placed in an electric field is determined by the charge of the particle and the direction of the electric field. In this case, a charge of -6 C is placed in an electric field directed upward with a magnitude of 24 N/C.

The force on a charged particle in an electric field can be calculated using the formula:

F = q * E

Where F is the force, q is the charge of the particle, and E is the electric field.

Since the charge q in this case is negative (-6 C) and the electric field E is directed upward, we can substitute the values into the formula:

F = (-6 C) * (24 N/C)

F = -144 N

The negative sign in the force value indicates that the force is in the opposite direction to the electric field. Therefore, the force on the charge placed in the electric field is downward, not upward.

The force on a negative charge is always opposite to the direction of the electric field. This is because negative charges experience an attractive force towards positive charges, and electric fields are directed from positive charges to negative charges.

Therefore, the statement "The direction of the force on the charge placed in the electric field is upward." is false.

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Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular,
Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skateboard,
would collide with some object. In this way, he got a gut feel for the physical properties of collisions and succeeded in
combining his two passions.* On one occasion, the Skate, with a mass of 117 kg, including his armor, hurled himself against a
879 kg stationary statue of Isaac Newton in a perfectly elastic linear collision. As a result, Isaac started moving at 1.63 m/s and
Nate bounced backward.
What were Nate's speeds immediately before and after the collision? (Enter positive numbers). Ignore friction with the ground.

Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding.

Answers

Answer:

Explanation:

The statue, being initially at rest, will move off at twice the velocity of the center of mass of the Skate-Statue system

The CM velocity is 1.63/2 = 0.815 m/s

so the Skates initial velocity can be found

(117 + 879)(0.815) = 879(0) + 117u

u = 6.93794...

|u| = 6.94 m/s

for elastic collisions, the relative velocity of approach will equal the relative velocity of departure.

Approach velocity 6.94 m/s

Skate's departure velocity 1.63 - 6.94 = - 5.31 m/s

|v| = 5.31 m/s

Using a 685 nm wavelength laser, you form the diffraction pattern of a 1.11 mm wide slit on a screen. You measure on the screen that the 11th dark fringe is 9.85 cm away from the center of the central maximum. How far is the screen located from the slit

Answers

Answer:

13.8 m

Explanation:

Dark fringes are formed in a single slit experiment due to destructive interference that occurs due to interference.

The position of these dark fringes formed on a screen is given by:

\(y = \frac{\lambda }{d} (m + 1/2)D\)

where y = position of  mth minimum

m = order of the minimum

D = distance of the slit from the screen

d = width of the slit

λ = wavelength of the light used

We need to find D:

\(D = \frac{yd} {\lambda (m + 1/2)} \\\)

From the question:

m = 11

y = 9.85 cm = 0.0985 m

λ  = \(6.83 * 10^{-7} m\)

d = 1.11 mm = 0.0011 m

Therefore:

\(D = \frac{0.0985 *0.0011} {6.83 * 10^{-7} *(11 + 1/2)} \\\\D = \frac{0.00010835} {6.83 * 10^{-7} * (23/2)} \\\\D = 13.8 m\)

The slit is 13.8 m far from the screen

An electron with a velocity of 14.4 m/s in the positive y-direction enters a region where there is a uniform electric field of 201 N/C in the positive x-direction. The mass of the electron is 9.109 × 10−31 kg.

What is the y-component of the electron’s displacement 2.40 μs after entering the electric-field region if no other forces act on it in μm?

What is the x-component of the electron’s displacement 2.40 μs after entering the electric-field region if no other forces act on it in m?

Answers

1. The electron experiences acceleration and moves independently in the y-direction.

2. The y-component of the electron's displacement after 2.40 μs in the electric field is -8.11 μm.

3.  The x-component of displacement remains zero.

To calculate the y-component and x-component of the electron's displacement, we need to consider the motion of the electron in the electric field. Let's break it down step by step:

1. Acceleration of the Electron:

The electric field causes a force on the electron given by the equation: F = qE, where F is the force, q is the charge of the electron, and E is the electric field.

Since the charge of an electron is -1.6 × \(10^-^1^9\) C, and the electric field is 201 N/C, we can calculate the force:

F = (-1.6 × \(10^-^1^9\)C) * (201 N/C)

  = -3.216 × \(10^-^1^7\) N

Using Newton's second law, F = ma, we can find the acceleration (a) of the electron:

a = F / m

  = (-3.216 × \(10^-^1^7\) N) / (9.109 ×\(10^-^3^1\) kg)

  = -3.530 × \(10^1^3 m/s^2\)

2. Displacement in the y-direction:

Since no other forces act on the electron, its motion in the y-direction is independent of the electric field. The equation for displacement (y) under constant acceleration is:

y = (1/2) * a *\(t^2\)

Substituting the values, where the time (t) is 2.40 μs (2.40 ×\(10^-^6\) s), we can calculate the y-component of displacement:

y = (1/2) * (-3.530 ×\(10^1^3 m/s^2\)) * (2.40 ×\(10^-^6 s)^2\)

  = -8.11 μm

Therefore, the y-component of the electron's displacement 2.40 μs after entering the electric-field region is -8.11 μm.

3. Displacement in the x-direction:

Since the electron's velocity is only in the y-direction initially, the x-component of the displacement remains zero. Without any forces acting in the x-direction, the electron continues to move in the y-direction without changing its x-position.

Hence, the x-component of the electron's displacement 2.40 μs after entering the electric-field region is 0 meters.

Please note that the calculations provided are based on the given values and the provided formulas for displacement and acceleration.

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Lenore is on an inclined plane next to her truck. Holding her hands steady, she pushes a box up the plane and into her truck. Where can energy be
lost? (1 point)
O Friction between Lenore and the ground.
O Friction between the truck and the inclined plane.
O Friction between the box and the inclined plane.
O Friction between Lenore's hands and the box.

Answers

The energy is lost in friction between the box and the inclined plane while pushing the box up the plane and into her truck.

What is friction and where is the energy getting lost?Friction is the resistance of an object on the surface to move forward and is denoted by u.Here in this question Lenore is standing on an inclined plane along with her truck next to her.She is pushing the boxes up to her truck , so there comes a friction between the heavy boxes and ground.To keep it little weight the box could have been slided to avoid the friction.Hence the energy is getting lost in friction between box and the inclined plane.

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Explain how this sand dune was created using the words weathering, erosion, and deposition.

PLSSS HELPP

Explain how this sand dune was created using the words weathering, erosion, and deposition.PLSSS HELPP

Answers

By abrasion, the sediment in the wind promotes erosion. The wind scatters sand, sand dunes created. When clay and silt are deposited by the wind. The presence of vegetation ground helps stop wind erosion.

What  is an erosion ?

Earthen materials were worn away during erosion, a geological process in which they are moved by water or wind. Weathering, a related process that does not involve movement, dissolves and breaks down rock.

What is caused by erosion?

The process through which the Earth's surface ages is known as erosion. Natural forces like wind or glacier ice can create erosion. But when it comes to altering the Earth, nothing compares to a slow, constant movement of water, as anyone who has ever seen a picture of a Grand Canyon will attest.

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In Figure below, m₁=2.00kg and m₂-4.00kg. Consider the pulley to be frictionless. (a) If m₂ is released, what will its acceleration be? (b) What is the tension in the string? m₂ 55 m₂​

Answers

(a) When m₂ is released, its acceleration will be approximately -3.27 m/s².

(b) The tension in the string is approximately -13.08 N.

To determine the acceleration of m₂ when it is released and the tension in the string, we need to consider the forces acting on the system.

(a) Acceleration of m₂:

Since the pulley is assumed to be frictionless, the tension in the string is the same on both sides of the pulley. We can consider the system consisting of m₁ and m₂ as one body. The net force acting on this system is the difference between the weight of m₁ and the weight of m₂:

Net force = m₁g - m₂g

Applying Newton's second law, F = ma, where F is the net force and a is the acceleration, we have:

m₁g - m₂g = (m₁ + m₂)a

Rearranging the equation to solve for the acceleration, we get:

a = (m₁g - m₂g) / (m₁ + m₂)

Substituting the given values, m₁ = 2.00 kg and m₂ = 4.00 kg, and the acceleration due to gravity, g = 9.8 m/s², we can calculate the acceleration:

a = ((2.00 kg)(9.8 m/s²) - (4.00 kg)(9.8 m/s²)) / (2.00 kg + 4.00 kg)

a = (19.6 N - 39.2 N) / 6.00 kg

a = -19.6 N / 6.00 kg

a = -3.27 m/s²

Therefore, when m₂ is released, its acceleration will be approximately -3.27 m/s². The negative sign indicates that the acceleration is in the opposite direction of the gravitational force.

(b) Tension in the string:

The tension in the string can be determined by considering the forces acting on m₂. The net force on m₂ is equal to its mass multiplied by its acceleration:

Net force = m₂a

Substituting the given values, m₂ = 4.00 kg and a = -3.27 m/s², we can calculate the tension:

Tension = (4.00 kg)(-3.27 m/s²)

Tension = -13.08 N

Therefore, the tension in the string is approximately -13.08 N. The negative sign indicates that the tension acts in the opposite direction of the weight of m₂.

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Patrick walks 6 meters to the south, 3 meters west, 2 meters to the north, and 5 meters to the east. Which of the following is true?

A. His displacement was 4 meters.
B. His distance traveled was 6 meters.
C. His distance traveled was 16 meters.
D.His displacement was 17 meters.

Answers

First we need to understand the meanings of displacement and distance traveled, displacement is the direct magnitude that comprehends two points the starting and the ending point. And the distance traveled as the name says it, is all the magnitudes of distance we took to take from a starting point to an ending point, in this case our distance traveled is the addition of all the distances they gave us.

Basically the answer is C, because the addition is 6+3+2+5 = 16. As we know that the distance traveled is the addition of all the magnitudes of distance it took us to get from a starting point to the ending point.

How much work is done on the object as it moves from 6.0m to 9.0m

Answers

Answer:

W = 3F

Explanation:

Work is defined as the inner product between force and displacement. The inner product picks out the force components which point in the same direction as the displacement. The vertical components do not matter in the horizontal displacement. I am assuming you're dealing with 1-dimensional motion? Then the work would be:

\(W=Fd\)

The displacement is 3 meters. Therefore, the work is:

\(W=3F\)

You haven't gave the force being applied to the object, so I cannot give an explicit answer. Just multiply the force by 3 to get the work.

What is the period of a mass-spring system with the following characteristics?

What is the period of a mass-spring system with the following characteristics?

Answers

the period of a mass-spring system with the  characteristics can be calculated using the formula T = 2π√(m/k), where m is the mass of the object and k is the spring constant. the period of the mass-spring system with the given characteristics is approximately 3.14 seconds.

A mass-spring system has the following characteristics: A spring that is initially stretched or compressed has an oscillatory motion around its equilibrium position. This is referred to as a mass-spring system.The period of the mass-spring system is the time it takes for one complete cycle, including compression and extension. The period is given by the equation

`T = 2π * √(m/k)`,

where T is the period, m is the mass attached to the spring, and k is the spring constant. Let's consider an example to better understand this formula: Suppose a mass of 5 kg is attached to a spring with a spring constant of 20 N/m. What is the period of the system?

T = 2π * √(m/k) = 2π * √(5/20) = 2π * √(1/4) = 2π * (1/2) = π ≈ 3.14s

Therefore, the period of the mass-spring system with the given characteristics is approximately 3.14 seconds.

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. The force of gravity on the Moon is said to be one-sixth of that on the Earth. What would a mass of 12 kg weigh; (a) on the Earth


Answers

A. The weight of the mass on the earth is 117.6 N

A. The weight of the mass on the moon is 19.56 N

How do i determine the weight of the mass?

Weight is defined as follow:

Weight (W) = mass (m) × Acceleration due to gravity (g)

W = mg

Now we shall determine the weight. Details below:

A. Weight on earth

Mass (m) = 12 KgAcceleration due to gravity on earth (g) = 9.8 m/s²   Weight on earth (W) =?

Weight (W) = mass (m) × Acceleration due to gravity (g)

Weight (W) = 12 × 9.8

Weight on earth = 117.6 N

B. Weight on moon

Mass (m) = 12 KgAcceleration due to gravity on earth (g) = 9.8 m/s²  Acceleration due to gravity on moon (g) = (1/6) × 9.8 = 1.63 m/s² Weight on moon (W) =?

Weight (W) = mass (m) × Acceleration due to gravity (g)

Weight (W) = 12 × 1.63

Weight on moon = 19.56 N

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Complete question:

The force of gravity on the Moon is said to be one-sixth of that on the Earth. What would a mass of 12 kg weigh; (a) on the Earth (b) on the moon

Which statements describe scientific laws but not theories or hypotheses? Check all that apply.
They are likely to change as new evidence is discovered.
They do not provide explanations for why they are true.
They are considered to be proven facts.
They have not yet been tested.
They are the bases for experiments instead of the results.

Answers

Answer:

B. They do not provide explanations for why they are true.

C. They are considered to be proven facts.

Explanation:

edge 2021

The statements describe scientific laws but not theories or hypotheses are they do not provide explanations for why they are true and they are considered to be proven facts.

What are scientific laws?

The law given by the experimenters or scientists after years of observations and experiments based on the scientific reasons are called scientific laws.

The laws are not the proven facts. They even don't explain why the scientific laws are true.

Thus, the correct option is B and C.

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A quarterback throws a pass at an angle of 35° above the horizontal with an initial speed of 25 m/s. The ball is caught by the receiver 2.55 seconds later. Determine the distance the ball was thrown.

Answers

The distance the ball was thrown is 52.22m by A quarterback throws a pass at an angle of 35° above the horizontal with an initial speed of 25 m/s. The ball is caught by the receiver 2.55 seconds later.

How to calculate distance?

Every motion under constant acceleration is projectile motion

Angle above horizontal Ф = 35°, initial speed v1 = 25m/s , time 2.55s

Substituting value in the below equation

x=x₁ + (v₁*cosθ)(t)+1/2 *a*t²

a= 0 as acceleration in horizontal direction is zero

x= 25*cos(35)*2.55

x=52.22 m

Projectile motion is a form of motion in which object influenced when it is launched into the gravitational force from the surface of Earth along a curved path.

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Dynamic stretching is a series of movements that warm up the body before an intended activity. Which dynamic stretch would warm an individual before a one mile run

Answers

Answer:

They would likely do a whole series of dynamic stretches

Explanation:

It would include warming up the body and then dynamically stretching the lower body, and some upper body as well. This isn't a question with one specific answer

A 15000N crane pivots around a friction-free axle at its base and is supported by a cable making a 25 degree angle with the crane. The crane is 16m long and is not uniform, its center of gravity being 7m from the axle as measured along the crane. The cable is attached 3m from the upper end of the crane. (a) When the crane is raised to 55 degrees above the horizontal holding an 11000N pallet of bricks by a 2.2m very light cord, find the tension in the cable.

Answers

The quadratic equation of this equals up to 999

FILL IN THE BLANK recall the portion of the video in which the girl pushes her brother on the sled at constant velocity. the pushing force she exerts on the sled is ___the frictional force the ground exerts on the sled.

Answers

The pushing force she exerts on the sled is equal to the frictional force the ground exerts on the sled.

In the video, the girl pushed her brother on the sled at a constant velocity, which means the forces acting on the sled must have balanced. Therefore, the pushing force the girl exerted must have been equal to the frictional force that the ground exerted on the sled.

This is because, according to Newton's Third Law of Motion, for every action there is an equal and opposite reaction. In this case, the action is the girl pushing the sled, and the reaction is the frictional force exerted by the ground on the sled. Since the sled is moving at a constant velocity, this means that the forces acting on it are balanced, and therefore the pushing force and the frictional force must be equal.

In equation form, this can be represented as:
F_push = F_friction

Where F_push is the pushing force exerted by the girl, and F_friction is the frictional force exerted by the ground.

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Describe the setup of the electromagnet. Why does the wire need to be a conductive material?

Answers

An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.

An electromagnet is a type of magnet that is created by running an electrical current through a wire. The setup of an electromagnet involves a few basic components. First, there must be a wire that is conductive, meaning that it can conduct electricity. This wire is usually wrapped around a core, which is often made of iron, steel, or another magnetic material. When an electrical current is run through the wire, it creates a magnetic field around the wire. This magnetic field then magnetizes the core, creating an even stronger magnetic field. The strength of the electromagnet can be controlled by adjusting the amount of current that is run through the wire. The wire must be a conductive material because it needs to be able to carry the electrical current that creates the magnetic field. If the wire were not conductive, then the electrical current would not be able to flow through it, and the magnetic field would not be created. In summary, the setup of an electromagnet involves a conductive wire wrapped around a magnetic core, which is magnetized by the electrical current running through the wire. The wire must be conductive to carry the electrical current and create the magnetic field.

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why was bowling one of the first racially integrated sports

Answers

Answer:

bowling was one of the first racially integrated sports because bowling alleys were primarily located in urban areas. Racial integration was inevitable since it was promoted by US Armed Forces during 1940s and its image as sport for the common man made it a choice of activity for Americans!!

Explanation:

Group B[1] 12 State Huygens's Principle [2] b) In a Young's double slit experiment, the fringe width obtained is 0.6 cm. When light of wave length 4500 Aº is used if the distance between the screen and the slit is reduced in half, what should be the wavelength of light used to obtain fingers 0.0045 m wide? [3]​

Answers

The wavelength of light that should be used to obtain fringes that are 0.0045 m wide after reducing the distance between the screen and the slit by half is 2.25 * 10^7 Å.

Huygens's Principle states that every point on a wavefront can be considered as a source of secondary spherical wavelets that spread out in all directions with the same speed as the original wave. The new wavefront is formed by the envelope of these secondary wavelets at a later time.

Now, let's consider a Young's double-slit experiment. In this experiment, when light passes through two narrow slits, it creates an interference pattern on a screen behind the slits. The fringe width is the distance between two consecutive bright or dark fringes in the pattern.

Given that the fringe width obtained is 0.6 cm and the wavelength of light used is 4500 Å (Angstroms), we can calculate the wavelength of light required to obtain fringes that are 0.0045 m wide.

We can use the formula for fringe width in Young's double-slit experiment:

w = (λ * D) / d

Where:

w is the fringe width,

λ is the wavelength of light,

D is the distance between the screen and the double slits, and

d is the distance between the two slits.

Let's calculate the value of D/d using the given information:

D/d = w / λ

= 0.006 m / 4500 Å (1 m = 10^10 Å)

= 0.006 * 10^10 / 4500 m^-1

Now, if the distance between the screen and the slit is reduced by half, the new value of D/d would be:

(D'/d) = (0.006/2) * 10^10 / 4500 m^-1

Now, we can rearrange the equation to solve for the new wavelength (λ'):

(λ' * D') / d = (D/d)

λ' = (D/d) * d / D

= [(0.006/2) * 10^10 / 4500] * (4500 / 0.006) Å

= 0.0045 m * 10^10 / 2 Å

= \(0.00225 * 10^{10\) Å

=\(2.25 * 10^7\)Å

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Power electronics and motion control system

A single-phase full-bridge uncontrolled (diode) rectifier is supplied by 220 V, 50 Hz source. Neglecting the diodes volt-drops,

a. Calculate the Average and rms values of the Output Voltage, Output (load) Current, the Ripple and Form Factors, when load is pure resistive R=10 Ohm.

b. Assume that load has inductive nature and L>> R and load current is flat and equal to 12 Ampere. Calculate the input Active Power, input Apparent Power and Power Factor (neglect diode losses)

Answers

a.  output voltage is 110 V, the RMS output voltage is approximately 155.56 V, the output (load) current is 15.56 A, the ripple factor is 0.866, and the form factor is 0.866. b. the input active power is 2640 W, the input apparent power is 2640 VA, and the power factor is 1 (or unity).

a. For a single-phase full-bridge uncontrolled (diode) rectifier with a pure resistive load of R = 10 Ohms and neglecting diode volt-drops, we can calculate the following values:

Average Output Voltage:

The average output voltage of a full-bridge rectifier can be calculated as half of the peak input voltage. Since the input voltage is 220 V, the average output voltage will be:

Average Output Voltage = (220 V) / 2 = 110 V

RMS Output Voltage:

The RMS output voltage of a full-bridge rectifier can be calculated as the peak input voltage divided by the square root of 2. In this case, the RMS output voltage will be:

RMS Output Voltage = (220 V) / √2 ≈ 155.56 V

Output (Load) Current:

Since the load is pure resistive, the output (load) current will be the same as the RMS output voltage divided by the load resistance. Therefore:

Output (Load) Current = RMS Output Voltage / R = 155.56 V / 10 Ω = 15.56 A

Ripple Factor:

The ripple factor for a full-bridge rectifier can be calculated as the ratio of the RMS value of the ripple voltage to the average output voltage. In this case, since we are neglecting diode volt-drops, the ripple factor is:

Ripple Factor = √(3/4) ≈ 0.866

Form Factor:

The form factor is the ratio of the RMS value of the output current to its average value. Since the load is purely resistive, the form factor is the same as the ripple factor:

Form Factor = 0.866

b. Now, assuming the load has an inductive nature with L >> R and a load current of 12 Amperes:

Input Active Power:

The input active power can be calculated as the product of the RMS input voltage, RMS input current, and the power factor. In this case, since the load current is flat and equal to 12 Amperes, and we neglect diode losses, the input active power will be:

Input Active Power = (220 V) * (12 A) = 2640 W

Input Apparent Power:

The input apparent power can be calculated as the product of the RMS input voltage and RMS input current. Therefore:

Input Apparent Power = (220 V) * (12 A) = 2640 VA

Power Factor:

The power factor is the ratio of the input active power to the input apparent power. In this case, the power factor will be:

Power Factor = Input Active Power / Input Apparent Power = 2640 W / 2640 VA = 1 (or unity)

Note: Neglecting diode losses implies that we assume the diodes are ideal, without any voltage drops or losses during the rectification process. In practical scenarios, there will be some voltage drops across the diodes, and losses should be taken into account for more accurate calculations.

Therefore, a. For a single-phase full-bridge uncontrolled (diode) rectifier with a pure resistive load of 10 Ohms, neglecting diode volt-drops, the average output voltage is 110 V, the RMS output voltage is approximately 155.56 V, the output (load) current is 15.56 A, the ripple factor is 0.866, and the form factor is 0.866. b. Assuming a load with an inductive nature, L >> R, and a flat load current of 12 A, the input active power is 2640 W, the input apparent power is 2640 VA, and the power factor is 1 (or unity).

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