Problem 14:

Justin is driving his 1500-kg Camaro through a horizontal curve on a level roadway at a speed of 23 m/s. The

turning radius of the curve is 65 m. Determine the minimum value of the coefficient of friction which would be

required to keep Justin's car on the curve.

Based on the moment of the forces, the distance the center of the box will be from the end of the table before the board begins to tilt is a distance greater than 14 cm.

The distance the center of the box will be from the end of the table before the board begins to tilt is calculated as follows:

The fulcrum is the edge of the table

The downward force acting on the left-hand side of the board = 3/5 x 7

The downward force acting on the left-hand side of the board = 4.2 kg. This force acts at the center of gravity = 15 cm or 0.15 m

The moment on the left side = 4.2 x .15 = 0.63 kg/m.

The moment on the right side = (2/5 x 7) x 0.1 +  2.5 x y

where;

y is the distance from the end of the table.

The moment on the left side = The moment on the right side

0.63 = 0.28 + 2.5 * y

y = 0.14 m or 14 cm

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Complete question:

A thin 2.50 kg box rests on the edge of a 6.00 kg board of length 2m that hangs over the end of a table. How far can the center of the board be from the end of the table before the board begins to tilt?

Electrical burns can occur in a variety of ways, including arc burns, low voltage burns, high voltage burns, mouth burns, flash burns, and flame burns.

Electric shock, a serious electrical mishap, or a fatal electrical event are all considered electrical incidents.

For the purposes of reporting and analysis, incident definition types let you attribute the appropriate type to safety events. Having only the two types of incidents—Accident and Near Miss—is one strategy.

An occurrence or scenario that has a number of serious repercussions and necessitates the implementation of special measures by one or more emergency responder agencies is referred to as a big incident.

Any electrical incident that results in or has the potential to result in: death or serious bodily harm to a person; significant property damage; or a serious risk to the public safety must be reported, according to the Electrical Safety (General) Regulations of 2019.

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Answer:

WDYM?

Explanation:

Answer: Get therapy (not like actually lol but like you know...)

Explanation: Listen to calming music or your favorite music, read, draw, color, literally anything that makes you calm

Answer:

it is a property of motion

Answer:

Explanation:

Take note that when the fuel of the rocket is consumed, the acceleration would be zero. However, at this phase the rocket would still be moving up until all the forces of gravity would dominate and change the direction of the rocket. Hence, there will be a need to calculate two distances, one from the ground until the point where the fuel is consumed and from that point to the point where the gravity would change the direction.

Given:

a = 76.8 m/s^2

t = 1.99 s

Solution:

d = vi (t) + 0.5 (a) (t^2)

d = (0) (1.99) + 0.5 (76.8) (1.99)^2

d = 0+38.4×3.9601

d = 152.068m

vf = vi + at

vf = 0 + 76.8 (1.99)

vf = 152.83 m/s (velocity when the fuel is consumed completely)

Then, we calculate the time it takes until it reaches the maximum height.

vf = vi + at

0 = 152.83+(-9.8) (t)

0 = 152.83 + (-9.8) (t)

-152.83 = -9.8t

t = 152.83/9.8 s

t = 15.59s

Then, the second distance

d= vi (t) + 0.5 (a) (t^2)

d = 152.83 (15.59) + 0.5 (-9.8) (15.59^2)

d = 2382.6197- 1190.93

d = 1191.68m

Then, we determine the maximum altitude:

d1 + d2 = 152.068 m + 1191.68m = 1343.748m

Answer:

273,000 Astronomical Units.

Explanation:

4.3 light years = 40,850,000,000,000 kilometeres, 4.3 x 9,500,000,000,000.

Convert kilometers to astronomical unit:

149,597,870 kilometers = 1 AU, convert unit.

40,850,000,000,000 divided by 149,597,870 = 273,065.385222 or approx. 273,000 AU.

Answer:

4:Hhhhghhhhhhhhhhhhhhhhhhhhhhhhhhhhh. 5:Bbbbbbbbbbbbbbbbbbbbb

The two key factors that affect the strength of the gravitational force between objects are their mass and the distance between them.

The factors that affect the strength of the gravitational force between objects are:
1. Mass of the objects: The strength of the gravitational force increases with the increase in mass of the objects involved.
2. Distance between the objects: The strength of the gravitational force decreases with the increase in distance between the objects.
In summary, the strength of the gravitational force between objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This relationship is described by Newton's law of universal gravitation.

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The law in South Africa, including the constitution, serves the interests of the dominant class, which historically has been the white minority. During apartheid, the law was used to enforce segregation and discrimination against the majority black population.

While the constitution and laws have since been revised to promote equality and protect human rights, there are still systemic issues that continue to serve the interests of the wealthy and powerful.

For example, land ownership remains highly concentrated in the hands of a few, and the legal system can be slow and expensive, making it difficult for marginalized communities to access justice. Additionally, the legacy of apartheid-era policies and practices continues to impact access to education, healthcare, and economic opportunities for many black South Africans.

Overall, while progress has been made in addressing inequality and promoting social justice, the law in South Africa still reflects the interests of the dominant class and requires continued efforts to ensure that it serves the needs of all citizens.

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Answer:

when an object move from its place is called an mation

We know that the vertical clearance of the crossbar by the ball is x=1.57m.

From a point 36.0 m from the goal, a place kicker must kick a football. The ball must clear the 3.05 m-high crossbar as a consequence of the kick. The ball kicks off the ground with a speed of 20.0 m/s at an angle of 53° from the horizontal.

v=18cos48 m/s

Time is therefore defined as distance multiplied by speed, which equals 28/18cos48 divided by 48, or 2.324

Use s = ut + (0.5)a(t2) when resolving vertically.

Where is the unidentified distance, s? (the height above the GROUND)

initials are u (vertical) 18 divided by 48 gives a speed of -9.8 meters per second (negative since we take upwards as positive)

t = 2.3247... (what we found previously) (what we found previously)

Adding the figures to the formula gives 4.616

Subtracting the goalpost's height (3.05) results in 1.57m above the crossbar, or 1.56.

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The roller coaster must be traveling at a minimum speed of approximately 8.81 m/s (or 31.7 km/h) at the top of the loop to prevent passengers from falling out.

To determine the minimum speed required for a roller coaster to prevent passengers from falling out at the top of a circular loop, we can use the concept of centripetal force. At the top of the loop, the net force acting on the passengers should provide enough centripetal force to keep them moving in a circular path without falling out.

The centripetal force required is provided by the gravitational force acting on the passengers. At the top of the loop, the gravitational force and the normal force (which acts perpendicular to the surface of the track) combine to provide the centripetal force.

The gravitational force is given by the equation:

Fgravity = m * g

Where m is the mass of the passenger and g is the acceleration due to gravity (approximately 9.8 m/s²).

The normal force at the top of the loop is equal to the gravitational force plus the centripetal force

Fnormal = Fgravity + Fcentripetal

The centripetal force is given by:

Fcentripetal = (m * v²) / r

Where v is the velocity of the roller coaster and r is the radius of curvature.

At the top of the loop, the net force acting on the passengers should be zero to prevent them from falling out, so we can set the normal force equal to zero:

Fnormal = 0

Fgravity + Fcentripetal = 0

m * g + (m * v²) / r = 0

Solving for v, we get:

v² = - (r * g)

Since the velocity cannot be negative, we take the positive square root:

v = √(r * g)

Substituting the given values

v = √(7.1 m * 9.8 m/s²)

v = 8.81 m/s

Therefore, the roller coaster must be traveling at a minimum speed of approximately 8.81 m/s (or 31.7 km/h) at the top of the loop to prevent passengers from falling out.

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Answer:

Explanation:

We shall apply conservation of momentum along x and y axis.

Let the final momentum of second particle be p₁ along x axis and p₂ along y axis.

Considering momentum along x axis

2 + 0 = 3 cos 45 + p₁

p₁ = 2-2.12 = - 0.12 kg m/s

Considering momentum along y axis

4 + 0 = 3 sin 45 + p₂

p₂ = 4-2.12 = 1.88  kg m/s

Final momentum = √ ( p₁² + p₂² )

=√ ( .12² + 1.88² )

= 1.88 approx

Answer:

300

Explanation:

when the baby are born then they would have 300 bones but when they grow they would have 206 cause when they grow that 94 bones would convert into different kind of proton and energy I guess

Answer:

Potential energy = 13.23 J

Explanation:

Given that,

The mass of the loaded cart, m = 3 kg

Its height of the seat top is 0.45 m

We need to find the potential energy of the loaded cart on top of the ramp. We know that, the potential energy of an object is due to its height. It can be given by the formula as follows :

\(E=mgh\\\\E=3\ kg\times 9.8\ m/s^2\times 0.45\ m\\\\E=13.23\ J\)

So, the required potential energy is 13.23 J.

Answer:

d. 0.48

Explanation:

So, the minimum required volume of the foam buoy is approximately 0.00176 cubic meters.

we'll first need to calculate the buoyancy force required to counteract the 80 Newtons force acting on the cube. Then, we'll use the density of the foam to determine the volume of the foam needed to generate that buoyancy force.

Step 1: Calculate the buoyancy force needed, The cube is acted upon by a sideways force of 80 Newtons. To hold the cube in equilibrium underwater, the buoy must provide an equal and opposite buoyancy force of 80 Newtons.

Step 2: Determine the density of the foam
The foam weighs 470 Newtons per cubic meter.

Step 3: Calculate the volume of the foam required
To find the volume (V) of the foam required, we'll use the formula for buoyancy force:

Buoyancy force = Density of foam × Volume of foam × Acceleration due to gravity (g)

We'll rearrange the formula to solve for the volume:

Volume of foam = Buoyancy force / (Density of foam × g)

We know that the buoyancy force is 80 Newtons, the density of foam is 470 N/m³, and the acceleration due to gravity (g) is approximately 9.81 m/s².

Plugging these values into the formula:
V = 80 N / (470 N/m³ × 9.81 m/s²)
V ≈ 0.00176 m³

So, the minimum required volume of the foam buoy is approximately 0.00176 cubic meters.

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The term personality traits has to do with the essentials of a person. One of the five big  personality trait that affects people negatively if they have to much of it is neuroticism.

The term personality traits refers to those traits that characterize an individual. They have the capacity to affect a person positively or negatively.

One of the five big  personality trait that affects people negatively if they have to much of it is neuroticism.

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Temperature is a measure of the average energy of particles in a substance is true.

Temperature is indeed a measure of the average energy of particles in a substance. Temperature reflects the kinetic energy of the particles, which is related to their random motion. In a substance, the particles are in constant motion, and their individual energies contribute to the overall temperature of the substance. A higher temperature indicates that, on average, the particles possess greater energy and are moving more vigorously. Conversely, a lower temperature signifies lower average energy and slower particle motion. Temperature is typically measured using various scales, such as Celsius, Fahrenheit, or Kelvin, and it serves as a fundamental parameter in thermodynamics and many other scientific disciplines.

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Answer:

The pressure difference required between the two ends of the 1.6 km pipe section, with a diameter of 29 cm, to transport the oil at a rate of 650 cm^3/s, is approximately 0.398 Pa.

Explanation:

To calculate the pressure difference between the two ends of a pipe, we can use the Poiseuille's Law equation, which relates flow rate, viscosity, pipe length, diameter, and pressure difference.

The formula is as follows: ΔP = (8 * n * L * Q) / (π * r^4)

Where:

ΔP is the pressure difference,

n is the viscosity of the fluid,

L is the length of the pipe section,

Q is the flow rate,

and r is the radius of the pipe (half of the diameter).

Given:

L = 1.6 km = 1600 m (convert to meters)

Diameter = 29 cm

Radius (r) = 29 cm / 2 = 14.5 cm = 0.145 m (convert to meters)

Q = 650 cm^3/s = 650 * 10^-6 m^3/s (convert to cubic meters per second)

n = 0.20 Pa.s (viscosity)

p = 950 kg/m^3 (density)

ΔP = (8 * 0.20 * 1600 * 650 * 10^-6) / (π * (0.145)^4)

ΔP ≈ 0.398 Pa

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The force that opposes motion through direct contact is called friction. It is caused by the interaction and deformation of the roughness in the contacting surfaces.

Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. It is caused by the interaction and deformation of the roughness in the contacting surfaces. It is, therefore, a contact force. When an object is set in motion, it continues to move unless stopped by an external force. There are a number of factors that can alter the velocity of an object that is already in motion. One of the most important factors is friction. Friction is a force that opposes motion through direct contact between two surfaces. This means that when an object is moving along a surface, it experiences a force that tries to slow it down. The amount of friction between two surfaces depends on a number of factors. One of the most important factors is the nature of the surfaces themselves. Rougher surfaces tend to generate more friction than smoother ones. This is because the roughness of the surface creates more contact points between the two surfaces, which in turn generates more friction. Another factor that affects the amount of friction between two surfaces is the amount of force pressing the two surfaces together.

In conclusion, friction is a force that opposes motion through direct contact between two surfaces. It is caused by the interaction and deformation of the roughness in the contacting surfaces. It depends on a number of factors, including the nature of the surfaces themselves and the amount of force pressing the two surfaces together.

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A limited access zone is an area next to a masonry wall that is being built and is clearly marked to restrict access by workers.

The restricted area must extend the entire length of the wall and have a height equivalent to the height of the proposed wall plus four feet. On the un-scaffolded side of the wall, a limited access zone must be formed. For a maximum wall height of 10.668 meters, the load-bearing masonry wall should be at least 304.8 mm (1 foot) thick (35 ft.). Additionally, for every additional 10.668 meters, the brick wall's thickness must be increased by 101.6 mm (4 inches) (35 ft).

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The primary coil of a transformer, which has 59 turns, receives 80 v from a generator. The secondary voltage will be 530 if the secondary coil has 530 turns IS 718.644 V

For an ideal transformer

Vs/Vp=Ns/Np

Given that primary voltage V =80 V

Number of turns in primary N = 59 turns

Number of turns in srcondary Ng = 530 turns

Therefore

Vs/80=530/59

Hence voltage across secondary V = 8.98*80 V

=718.644 V.

Voltage is the quantity of potential charge that exists between two points on a circuit. One idea is charge more strongly than another. Voltage refers to the difference in charge between the two points. Volt, denoted by the symbol "V," is the accepted unit of measurement for the voltage expression.

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Answer:

the answer is A.) Wedge

A knife to cut a piece of bread is a A. Wedge

A simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work.

since , a wedge is a simple machine  with two inclined planes which when put together forms a sharped edge, which forms a triangular shaped tool which can be used to separate portion of  two objects .

hence , a knife to cut a piece of bread is a A. Wedge

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Answer:

an 85 kg person run to equal the kinetic energy of an 8.0 g bullet fired at 410 m/s? The speed is, it might be argued,

v=4.0m/s

Explanation:

Typically, the mathematical formula for kinetic energy is as follows:

KE=\(\frac{1}{2} *m*v^{2}\)

K.E= kinetic energy

M=mass

V= speed

so,

KE=1/2*0.008*(420)*420

K.E=672.4J

 Therefore,

v*v=672.4/85

v*v=15.821

v=4.0m/s

Therefore

v=4.0m/s

What is Kinetic Energy?

The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

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The pulley system to the right will be in static equilibrium at an unknown angle of 90 degrees.

An object must satisfy two requirements of equilibrium in order to maintain static equilibrium. First, there must be no net force acting on the item. Second, there must be no net torque pulling on the object.

The 80 N weight is fastened to a freely rotating pulley in this setup.

As a result, the cable's tension is also 80 N.

The tensions' x components must be balanced against one another:

T1x = T2x

Since T1x = T1 cos(θ) and T2x = 0 (because the cable attached to the wall is vertical), we have:

T1 cos(θ) = 0

Therefore, cos(θ) = 0, which means that θ = 90 degrees.

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Answer:0.46 m/s^2.

Explanation:

The acceleration of the dog can be calculated by using the formula:

acceleration = (final velocity - initial velocity) / time

The initial velocity of the dog was 3 m/s, the final velocity was 9 m/s, and the time was 13 seconds.

acceleration = (9 m/s - 3 m/s) / 13 s = 0.46 m/s^2

Therefore, the acceleration of the dog was 0.46 m/s^2.

A. The area of the object can be calculated by breaking it down into smaller shapes and adding their areas together. We can see that the object consists of a rectangle and a semicircle :

Therefore, the total area of the object is 12 + 3.53 = 15.53 square inches. Answer:

B. To find the X coordinate of the center of mass, we need to find the centroid of the object. The centroid is the point where the object would balance if it were placed on a pin. The X coordinate of the centroid can be found using the formula:

Where A is the area of each shape and x is the distance from the centroid of each shape to the Y axis.

The centroid of a rectangle is at the center, which is at (3,1). The centroid of a semicircle is at (4/3, 4/3) from the center of the circle.  Therefore, the X coordinate of the centroid of the semicircle is at 3 + (4/3) = 4.33. We can now use the formula to find the X coordinate of the centroid of the object: Xc = (A1x1 + A2x2) / (A1 + A2) = ((6 x 2 x 3) + (1/2 x π x 1.5^2 x 4.33)) / (12 + 3.53) = 2.9 inches.

The Answer:

C. To find the Y coordinate of the center of mass, we can use a similar formula:

The Y coordinate of the centroid of the rectangle is at 0.5, and the Y coordinate of the centroid of the semicircle is at 2/3 from the center of the circle. Therefore, the Y coordinate of the centroid of the semicircle is at 1 + (2/3) = 1.67. We can now use the formula to find the Y coordinate of the centroid of the object: Yc = (A1y1 + A2y2) / (A1 + A2) = ((6 x 2 x 0.5) + (1/2 x π x 1.5^2 x 1.67)) / (12 + 3.53) = 1.07 inches.

The Answer:

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By Newton's second law, the car has acceleration a such that

2000 N = (1500 kg) a

a = (2000 N) / (1500 kg)

a = 4/3 m/s² ≈ 1.33 m/s²

After 15 s, the car will attain a speed of

(4/3 m/s²) (15 s) = 20 m/s

It will have traveled a distance ∆x such that

(20 m/s)² - 0² = 2 (4/3 m/s²) ∆x

∆x = (20 m/s)² / (8/3 m/s²)

∆x = 150 m