write an equation for the width of the box in terms of e, π, the reduced planck constant ℏ, and the mass of an electron me.

Answer:

Explanation:

(4.8 m/s)t = 1/2(2.2 m/s²)t²

2(4.8 m/s)t / (2.2 m/s²) = t²

2(4.8 m/s) / (2.2 m/s²) = t²/t

t = 4.36 s

A.  total time it takes to catch up to friend = 4.36s + 2s = 6.36s    (took her 2 sec to hop on the bike and get going)

B. Distance she travels is the same distance the friend travels in 4.36 s = (4.8 m/s)(4.36 s) = 1/2(2.2 m/s²)(4.36 s)² = 20.9 m

0 miles

Explanation:

delta displacment=position end-position beginning

The displacement of Adaline if she walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house is zero miles so, option A is correct.

The overall modification of an object's location and direction of motion is referred to as displacement. Since displacement considers both the amount of the changing location and the direction of the motion, it is known as a vector quantity. There may be zero, positive, or negative displacement.

Given:

Adaline walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house,

Calculate the displacement as shown below,

Displacement = Distance from house to school + Distance from school to house,

Displacement = 2 + (-2)  (North direction is taken as positive and south direction is taken as negative)

Displacement = 0 miles

To know more about displacement:

https://brainly.com/question/11934397

#SPJ2

\(\\ \rm\rightarrowtail W=Fx\)

\(\\ \rm\rightarrowtail 12=1.6F\)

\(\\ \rm\rightarrowtail F=7.5N\)

Now

\(\\ \rm\rightarrowtail F=-Kx\)

\(\\ \rm\rightarrowtail 7.5=-1.6k\)

\(\\ \rm\rightarrowtail k=-4.68N/m\)

Answer:

the applied force is greater than the force of friction

Explanation:

pls give brainliest it makes me feel smart

Answer:

hi!

Explanation:

The answer is option b.

A box can definitely not move on it's own unless an external force is applied i.e muscular force. If the applied force would have been less than the force of friction then the box would have never displaced. But, since the box is able to move, we can imply that, the applied force is greater than the frictonal force leading in the displacement of the box.

The photons from the cosmic microwave background (CMB) radiation are believed to have not interacted significantly with matter since the universe was approximately 380,000 years old. This event is known as recombination.

In the early stages of the universe, the high energy and density prevented light from traveling freely. Photons were continuously scattered by free electrons and protons, resulting in a dense, opaque plasma. However, as the universe expanded and cooled, it reached a point where electrons and protons combined to form neutral atoms. This process, called recombination, occurred when the universe was around 380,000 years old.

Following recombination, photons were no longer frequently scattered by matter, allowing them to travel freely through space. The photons we observe today as the CMB radiation have traveled across the universe for approximately 13.8 billion years since their last significant interaction with matter during recombination.

To know more about radiation please visit:

https://brainly.com/question/31106159

#SPJ11

Main answer-

PE=mgh

KE=E-PE

V = (2*g*h)^½

at point A

PE = 10*9.8*50=4900 J

KE = 0 J  ( because the velocity of the body is 0)

V=0

at point B

PE = 10*9.8*35=3430 J

KE = 4900-3430=1470 J

V= ( 2*9.8*15)^ ½

V=17.14 m/s

at point C

PE= 10*9.8*25=2450 J

KE=4900-2450=2450 J

V= (2*9.8*25)^ ½

V=22.135 m/s

at point D

PE=10*9.8*0=0 J

KE=4900-0=4900 J

V=(2*9.8*50)^ ½

V=31.30 m/s

to learn more about potential energy and kinetic energy of a falling body link

https://brainly.in/question/1359662

#SPJ1

Answer: c

Explanation:

If the first pulley on the left is turned counterclockwise, pulley 3 will turn counterclockwise as well.

The direction that pulley 3 will turn depends on the direction in which the rope is twisted between each pair of pulleys.

The direction of rotation of pulley 3 will be opposite to that of pulley 1, as the rope is looped around all three pulleys in a continuous manner. This means that if pulley 1 is turned counterclockwise, pulley 3 will likely turn clockwise. However, the exact direction may vary depending on the specifics of the pulleys and rope system.

Step 1: Turn the first pulley counterclockwise.
Step 2: Observe that the twisted rope between the first and second pulleys causes the second pulley to rotate in the opposite direction. Therefore, the second pulley will turn clockwise.
Step 3: Similarly, the twisted rope between the second and third pulleys causes the third pulley to rotate in the opposite direction of the second pulley.

If the first pulley on the left is turned counterclockwise, pulley 3 will turn counterclockwise as well.

To know more about pulley, refer

https://brainly.com/question/1303344

#SPJ11

Answer:

option b has the correct answer of given statement

 Here  the answer = 0.0080 .

Based on stokes law,

 v = g * D^2 *(d p - d m) / (18 V)

v = terminal velocity

D =  diameter of particle

V  =  Viscosity

dp =  density of particle

dm =  density of medium.

Here density of ball = 1.42 gm/cc

By substituting,

v = 9.81 x 9.52 x 10^-3 ^2 (1420 - 1300) / 18 x 1.0

=5.92x10^-4

 v(t) =0 .99 x Vtrm

  =0 .99 x  0.0059

  = 0.00059 m/s

  v(t)/Vterm =1-e^(-t/r)

  0.99 = 1 - e ^ (-t / 9.52 x 10^-3)

  e ^ (-t / 9.52 x 10^-3) = 0.01

Taking log

 -t / 9.52 x 10^-3 = -4.6

  t = 0.0438 s

Then smaller ball

v = 9.81 x 2.38 x 10^-3 ^2 (1420 - 1300) / 18 x 1.0

= 0.000037 m/s

v(t) / Vterm = 1-e^(-t/r)

0.99 = 1 - e ^ (-t / 2.38 x 10^-3)

e ^ (-t / 2.38 x 10^-3) = 0.01

Taking log

-t / 2.38 x 10^-3 = -4.6

  t = 0.0109 s

Here Reynolds number is,

R= rho vd / mu

= 1420 x  0.00059 x 9.52 x 10^-3 x / 1.0

= 0.0080

To learn more about stroke's law refer to :

https://brainly.com/question/18240039

#SPJ4

The minimum torque that must be applied to the second hand of the clock to prevent it from stopping is dependent on the frictional force between the glass cover and the tip of the hand, which is 0.0022 N.

Torque is the rotational equivalent of force and is defined as the product of force and the perpendicular distance from the axis of rotation to the line of action of the force. In this case, the frictional force between the glass cover and the tip of the second hand creates a torque that opposes the motion of the hand. To prevent the clock from stopping, a minimum torque must be applied to overcome the frictional force.

The torque (τ) can be calculated using the formula τ = r × F, where r is the distance from the axis of rotation to the point where the force is applied (in this case, the length of the hand) and F is the magnitude of the force (the frictional force). The minimum torque required to counteract the frictional force and keep the clock running without stopping is given by the product of the length of the hand and the frictional force, which is 0.0022 N multiplied by 7.5 cm (converted to meters).

Calculating the product, the minimum torque required would be 0.0165 N·m (Newton-meters). This torque ensures that the frictional force between the glass cover and the tip of the second hand is effectively countered, allowing the clock to continue its motion without being stopped by the friction.

Learn more about torque here:

https://brainly.com/question/30338175

#SPJ11

In a simple electrical circuit, if it contains a battery, a light bulb, and a properly connected ammeter, the ammeter has a very low internal resistance because it is connected in series with the circuit.

An electrical circuit is made up of a combination of resistors, voltage sources, and current sources that are interconnected in a closed loop. It is used to generate an electric current in a complete circuit and can be as straightforward as a battery connected to a bulb or as complicated as a full-scale electronic circuit.

Ammeters are measuring devices that are used to measure current in a circuit. The ammeter should be connected in series with the circuit to allow current to flow through it. An ammeter with a very low internal resistance should be used since any extra resistance in the ammeter can change the current being measured.

Learn more about circuit

brainly.com/question/12608516

#SPJ11

Answer:

i think its false

Explanation:

A zero acceleration is the fundamental characteristic of an object in equilibrium.

Answer:

True

Explanation:

If its moving at a constant velocity its acceleration is zero. An zero acceleration is the the fundamental characteristic of an object in equilibrium

The average force acting on the car is -12500 N, and the car traveled 40.0 m during the 4.00 s it took to come to a stop.

(a) To determine the average force acted on the car, we can use the formula:

average force = (mass x change in velocity) / time

where mass is the mass of the car, change in velocity is the difference between the initial velocity and the final velocity, and time is the time taken for the car to come to a stop.

Substituting the given values, we get:

average force = \(\frac{2000 \times (5.00 - 20.0)}{4.00}\)

average force = -12500 N (negative sign indicates the force acts in the opposite direction of motion)

Therefore, the average force acting on the car is 12500 N in the opposite direction of motion.

(b) To determine how far the car traveled during that time, we can use the formula:

distance = initial velocity x time + (1/2) x acceleration x time^2

where initial velocity is the initial velocity of the car, time is the time taken for the car to come to a stop, and acceleration is the acceleration of the car during that time (which is equal to the average force divided by the mass of the car).

Substituting the given values, we get:

distance = \(20.0\ \mathrm{m/s} \times 4.00\ \mathrm{s} + \frac{1}{2} \times \frac{-12500\ \mathrm{N}}{2000\ \mathrm{kg}} \times (4.00\ \mathrm{s})^2\)

distance = 80.0 m - 40.0 m

distance = 40.0 m

Therefore, the car traveled 40.0 m during the 4.00 s it took to come to a stop.

To learn more about average force

https://brainly.com/question/29754124

#SPJ4

Answer:

The correct answer is Positive

Explanation:

Put the word POSITIVE

Answer:

I need a picture dude or something more specific than the other kids were white gold and blue

Explanation:

ob 1 day

1day is the answer

Answer:

51 miles/hour

Explanation:

Talia is on a road trip with some friends. in the first 2 hours, they travel 100 miles. then they hit traffic and go only 30 miles in the next hour. the last hour of their trip, they drive 75 miles. calculate the average speed of talia’s car during the trip. give your answer to the nearest whole number.

The average speed would be 51 miles/hour.

The average speed of a moving object is defined as the total distance traveled relative to the total time taken fro the journey. Mathematically, it is given as:

  total distance traveled/total time taken.

In this case;

Total distance traveled = 100 + 30 + 75 = 205 miles

Total time taken = 2 + 1 + 1 = 4 hours

Therefore;

Average speed = 205/4 = 51.25 miles/hour

To the nearest whole number = 51 miles/hour

The force exerted on the eardrum at the bottom of a 2.9m deep water-filled pool is approximately 1.4 x 10^-3 N, taking into account the pressure of the water and the atmosphere.

The pressure at the bottom of the water-filled pool can be calculated using the formula P = rho * g * h, where rho is the density of water (1000 kg/m^3), g is the acceleration due to gravity (9.81 m/s^2), and h is the depth of the pool (2.9 m). Thus, P = (1000 kg/m^3) * (9.81 m/s^2) * (2.9 m) = 28410 Pa. The total force exerted on the eardrum is then the product of pressure and area: F = P * A = (28410 Pa) * (5.0 x 10^-5 m^2) = 1.4 x 10^-3 N. This force takes into account the pressure of the water as well as the atmospheric pressure.

Learn more about average eardrum  here:

https://brainly.com/question/28043002

#SPJ11

If the wire is tipped at an angle of 15.0° with the horizontal, we need to determine the force it will now feel. The length of the wire that will be in the magnetic field is relevant to finding the answer.

When a wire carrying current is placed in a magnetic field, it experiences a force perpendicular to both the direction of current flow and the magnetic field. In this case, when the wire is tipped at an angle of 15.0° with the horizontal, only a component of the wire's length will be in the magnetic field.

To find the force, we need to consider the effective length of the wire in the magnetic field. This can be calculated by multiplying the actual length of the wire by the cosine of the angle between the wire and the magnetic field. Once we have the effective length, we can use the formula for the force on a current-carrying wire in a magnetic field, which is given by the equation F = BIL, where B is the magnetic field strength, I is the current, and L is the length of the wire in the field. By substituting the effective length into the equation, we can determine the force the wire will experience.

To learn more about current-carrying wire in a magnetic field, click here: brainly.com/question/31865297

#SPJ11

Power tools must be used since all interior walls are reinforced is a consideration when forcing interior walls.

The correct option is  C.

The load of the floor or roof construction above them is supported by load-bearing walls, also referred to as "bearing walls." They are made to transfer weight from the roof to the foundation by passing through the flooring. A bearing wall, also known as a load-bearing barrier or a structural wall, supports the entire weight of the home. This wall assists in distributing the weight of the building from the roof to the base, and its loss could lead to the building collapsing.

Tom proposes going up to the attic or basement to check which direction the joists run to see if a wall is load-bearing. The wall is still most likely not load-bearing if it runs parallel to the joists.

To know more about Load-bearing visit:

https://brainly.com/question/11158855

#SPJ13

The complete question is -

What is a consideration when forcing interior walls?

A-The wall coverings often hide interior metal framing.

B-The walls may be load-bearing and affect structural integrity.

C-Power tools must be used since all interior walls are reinforced.

D-Forcing the wall will require firefighters to work in a team of two.

Answer:

the limbic system has its input and processing side (the limbic cortex, amygdala and hippocampus) and an output side (the septal nuclei and hypothalamus).

Explanation:

hope it helps

Answer:

limbic system

Explanation:

The "limbic system" is situated under the cerebrum. It is responsible for the person's emotions and memories. Its primary structures include: hippocampus, amygdala, thalamus and hypothalamus.

The "hippocampus" is responsible for obtaining new memories. It is also associated with mental functions like "learning."

The "amygdala" is responsible for emotional memories.

The "thalamus" and "hypothalamus" are responsible for reactions towards the emotions.

This statement is true and is known as the Law of Total Probability. It states that the probability of an event A is equal to the sum of the probability of A given that another event B has occurred and the probability of A given that B has not occurred, multiplied by the probability of B not occurring. In symbols, this can be expressed as:

P(A) = P(A | B) * P(B) + P(A | not B) * P(not B)

where P(A) is the probability of event A occurring, P(B) is the probability of event B occurring, P(not B) is the probability of event B not occurring, P(A | B) is the conditional probability of A given that B has occurred, and P(A | not B) is the conditional probability of A given that B has not occurred.

In this case, the friend's claim can be written as:

P(A) = P(A or B) - P(not A) * P(B | not A)

which is equivalent to:

P(A) = P(A | B) * P(B) + P(A | not B) * P(not B) - P(not A) * P(B | not A)

This is the same formula as the Law of Total Probability, so the friend's claim is true, always.

To know more about probability click here:

brainly.com/question/30034780

#SPJ4

If the dart got stuck to the spring then the period of this oscillation will be 0.11 s.

Simple harmonic motion is a specific kind of periodic motion of a body that arises from a dynamic equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium position and a restoring force on the moving object that is directly proportional to the magnitude of the object's displacement and acts towards the object's equilibrium position. If friction or any other energy dissipation is not present, it leads to an oscillation that is represented by a sinusoid and that lasts indefinitely. Oscillating spring perform SHM

The differential equation for SHM is given by,

\(\frac{d^2x}{dt^2} + \sqrt{\frac{k}{m}} x=0\)

the period of the system is given by

ω²=2π√(m/k).

Given,

k = 220 N/m.

m = 0.069 kg

x =0.07

Putting values in the equation, we get

T=2π√(0.069/220)

T = 0.11 s

Hence period the oscillation is 0.11 s.

To know more about spring :

brainly.com/question/14670501

#SPJ4.

Answer:

-2.4 m/s²

Explanation:

avg accel = Δv/Δt

v-i = 30 m/s

v-f = (30 m/s)(0.60) = 18 m/s

Δt = 5.0 sec

avg accel = (18 m/s - 30 m/s) / 5.0 s = (- 12 m/s) / 5 s = -2.4 m/s²

negative sign means it's slowing down

Answer:

8

Explanation:

240 divided by 30 = 8

The mass matrix M (p) describes the generalized mass and inertia of the system as a function of the vehicle pose.

The term "generalized mass" usually refers to a representation of the "physical" mass matrix that has been transformed from "physical" (also known as "nodal" in FE) coordinates to generalised (also known as "modal") coordinates.

The eigenvalue analysis yields eigenvalues, which are related to the system's natural frequencies (2*pi*f2), and eigenvectors, which are the mode shapes associated with each of those frequencies. When all of these eigenvectors are combined into one matrix, with each column of the matrix representing one eigenvector, we have the system's "modal matrix." You can scale each column however you want. The columns are frequently scaled so that each has a maximum value of 1.

Learn more about generalized mass: https://brainly.com/question/3187640

#SPJ4

The angle of incidence from the glass when the reflected light in the glass is linearly polarized is called Brewster's angle.

Brewster's angle is the angle of incidence at which light is polarized when it is reflected from a transparent surface, such as glass. The reflected light at this angle is entirely polarized and has no parallel component.What is polarization of light?When light waves propagate through space, the electric and magnetic fields at each point in the wave can oscillate in different directions.

                        The polarization of light is the orientation of the electric field vector that produces the electromagnetic wave as it propagates. The reflected light from a transparent surface, such as glass, is entirely polarized when the angle of incidence is Brewster's angle. When the angle of incidence is greater than Brewster's angle, both polarizations are reflected, and the reflected light is no longer linearly polarized.

Learn more about Brewster's angle

brainly.com/question/29428017

#SPJ11

Answer:

D. Electrons mover from one to another

Explanation:

Static electricity occurs when electrons are transferred from one object to another.