N/A - Exam Exam Answers

Which free body diagram shows the forces acting on block A?

Which label belongs in the region marked X?

Which lists the springs based on the amount of elastic potential energy, from greatest to least?

An advertising agency writes marketing material for a new motor (Brand W) that has a power rating of 7,640 W. Which statement comparing the motors can they truthfully use?

Which label belongs in the area marked X?

Which arrow represents the centripetal force responsible for this motion?

Which statement relates most directly to the second law?

If the goal of the turbine is to put out electric energy, what is the efficiency of the turbine?

Which trial shows the conservation of momentum in a closed system?

Which best describes the acceleration of the object?

Which energy transformation is correct?

Which energy transformation is correct?

What is the magnitude of the resultant vector?

How much electrical energy is involved in this transformation?

If the goal of the turbine is to put out electric energy, what is the efficiency of the turbine?

Which statement relates most directly to the second law?

Which describes what happens to the bone?

Which describes what happens to the bone?

An advertising agency writes marketing material for a new motor (Brand W) that has a power rating of 7,640 W. Which statement comparing the motors can they truthfully use?

Which lists the springs based on the amount of elastic potential energy, from greatest to least?

Which arrow represents the centripetal force responsible for this motion?

Which trial shows the conservation of momentum in a closed system?

Which labels best complete the diagram?

Which labels best complete the diagram?

How much electrical energy is involved in this transformation?

What is the magnitude of the resultant vector?

Which label belongs in the region marked X?

Which diagram represents the forces acting on the block?

Which best describes the acceleration of the object?

At night, the demand for electricity supplied by a fission nuclear reactor decreases. How is the fission nuclear reaction controlled to avoid overproduction of electricity?

A train travels 600 kilometers in 4 hours. What is the speed of the train?

On an ice skating rink, a girl of mass 50 kilograms stands stationary, face to face with a boy of mass 80 kilograms The children push off of one another, and the boy moves away with a velocity of 3 meters meters per second What is the final velocity of the girl?

Which best describes the heat that you can feel on the engine of a running car?

If all else stays the same, which change could be made to cause an increase in the gravitational force on a space shuttle?

If all else stays the same, which change could be made to cause an increase in the gravitational force on a space shuttle?

Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he works in the yard. What does Takumi hope to reduce through his actions?

A car with a mass of 1 comma 500 kilograms requires a centripetal force of 640 cap n to safely follow a circular curve in the road at 13 point 4 m/s What is the radius of the curve?

Once started, why can nuclear fission continue to occur on its own?

A twirler’s baton is 0 point 7 6 m long and spins around its center. The end of the baton has a centripetal acceleration of 47 point 8 m/s squared How long does it take the baton to complete one spin?

Briana swings a ball on the end of a rope in a circle. The rope is 1 point 5 m long. The ball completes a full circle every 2 point 2 s What is the tangential speed of the ball?

What is the approximate tangential speed of an object orbiting Earth with a radius of 1 point 8 times 10 to the 8th power m and a period of 2 point 2 times 10 to the 4th power s ?

A car moving south speeds up from 10 meters per second to 40 meters per second in 15 seconds. What is the car’s acceleration?

A 2 point 5 kilograms block is launched along the ground by a spring with a spring constant of 56 cap n over m The spring is initially compressed 0 point 7 5 m Disregarding friction, how fast will the block move after the spring is released all the way and the block slides away from it?

A student wants to determine the impulse delivered to the lab cart when it runs into the wall. The student measures the mass of the cart and the velocity of the cart before it hits the wall. What other measurement is necessary to calculate the impulse delivered to the lab cart?

In which scenario is the greatest amount of work done on a wagon?

Which statements describe the motion of a planet according to Kepler’s second law? Choose two correct answers.

A hot air balloon pilot wants the balloon to quickly rise several feet higher so it will be above some trees in the distance. Which best explains how the pilot can make the balloon rise?

A hot air balloon pilot wants the balloon to quickly rise several feet higher so it will be above some trees in the distance. Which best explains how the pilot can make the balloon rise?

Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he works in the yard. What does Takumi hope to reduce through his actions?

What is the kinetic energy of an object that has a mass of 50 point 0 kilograms and a velocity of 18 meters per second ?

Rosalinda wants to calculate the mass of Earth using Kepler’s laws or Newton’s universal law of gravitation.Which data would allow her to find the mass of Earth?

What is the acceleration along the ground of a 10 kilograms wagon when it is pulled with a force of 44 cap n at an angle of 35 degrees above the horizontal?

Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40 degrees relative to the ground. What is the approximate horizontal component of the initial velocity?

Emissions from alpha decay require the least amount of shielding. Which best describes why the emissions from alpha decay are so easily blocked compared to the emissions of other types of radioactive decay?

The acceleration due to gravity on Earth is 9 point 8 the fraction with numerator m and denominator s squared What is the weight of a 75 kilograms person on Earth?

Which graph shows the relationship between temperature, X, and kinetic energy, Y?

At night, the demand for electricity supplied by a fission nuclear reactor decreases. How is the fission nuclear reaction controlled to avoid overproduction of electricity?

It requires 350 joules to raise a certain amount of a substance from 10 point 0 times degree C to 30 point 0 times degree C The specific heat of the substance is 1 point 2 the fraction with numerator cap j and denominator g times degree C What is the mass of the substance?

It requires 350 joules to raise a certain amount of a substance from 10 point 0 times degree C to 30 point 0 times degree C The specific heat of the substance is 1 point 2 the fraction with numerator cap j and denominator g times degree C What is the mass of the substance?

Which best describes the heat that you can feel on the engine of a running car?

A stretched spring has 5184 cap j of elastic potential energy and a spring constant of 16 comma 200 cap n over m What is the displacement of the spring?

A system uses 2,380 J of energy to do work as 12,900 J of heat are added to the system.

Briana swings a ball on the end of a rope in a circle. The rope is 1 point 5 m long. The ball completes a full circle every 2 point 2 s What is the tangential speed of the ball?

What is the horizontal acceleration of a ball that is launched horizontally with a velocity of 5 point 6 m/s ?

A car manufacturer wants to change its car’s design to increase the car’s acceleration. Which changes should the engineers consider making to the design? Choose two correct answers.

When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball?

A car travels straight for 20 miles on a road that is 30 degrees north of east. What is the east component of the car’s displacement to the nearest tenth of a mile?

Rosalinda wants to calculate the mass of Earth using Kepler’s laws or Newton’s universal law of gravitation.Which data would allow her to find the mass of Earth?

Which is an example of conduction?

A car with a mass of 1 comma 500 kilograms requires a centripetal force of 640 cap n to safely follow a circular curve in the road at 13 point 4 m/s What is the radius of the curve?

What is the acceleration along the ground of a 10 kilograms wagon when it is pulled with a force of 44 cap n at an angle of 35 degrees above the horizontal?

What is the approximate tangential speed of an object orbiting Earth with a radius of 1 point 8 times 10 to the 8th power m and a period of 2 point 2 times 10 to the 4th power s ?

What is the kinetic energy of an object that has a mass of 50 point 0 kilograms and a velocity of 18 meters per second ?

In which scenario is the greatest amount of work done on a wagon?

Which statements describe the motion of a planet according to Kepler’s second law? Choose two correct answers.

A stretched spring has 5184 cap j of elastic potential energy and a spring constant of 16 comma 200 cap n over m What is the displacement of the spring?

When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball?

Which is the best example of kinetic energy?

A system uses 2,380 J of energy to do work as 12,900 J of heat are added to the system.

The acceleration due to gravity on Earth is 9 point 8 the fraction with numerator m and denominator s squared What is the weight of a 75 kilograms person on Earth?

Emissions from alpha decay require the least amount of shielding. Which best describes why the emissions from alpha decay are so easily blocked compared to the emissions of other types of radioactive decay?

A car travels straight for 20 miles on a road that is 30 degrees north of east. What is the east component of the car’s displacement to the nearest tenth of a mile?

A car moving south speeds up from 10 meters per second to 40 meters per second in 15 seconds. What is the car’s acceleration?

A train travels 600 kilometers in 4 hours. What is the speed of the train?

A student wants to determine the impulse delivered to the lab cart when it runs into the wall. The student measures the mass of the cart and the velocity of the cart before it hits the wall. What other measurement is necessary to calculate the impulse delivered to the lab cart?

The gravitational force between two objects is 1600 N. What will be the gravitational force between the objects if the distance between them doubles?

Which graph shows the relationship between temperature, X, and kinetic energy, Y?

Which is an example of conduction?

Which is the best example of kinetic energy?

A twirler’s baton is 0 point 7 6 m long and spins around its center. The end of the baton has a centripetal acceleration of 47 point 8 m/s squared How long does it take the baton to complete one spin?

The gravitational force between two objects is 1600 N. What will be the gravitational force between the objects if the distance between them doubles?

Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40 degrees relative to the ground. What is the approximate horizontal component of the initial velocity?

Once started, why can nuclear fission continue to occur on its own?

A car manufacturer wants to change its car’s design to increase the car’s acceleration. Which changes should the engineers consider making to the design? Choose two correct answers.

What is the horizontal acceleration of a ball that is launched horizontally with a velocity of 5 point 6 m/s ?

A 2 point 5 kilograms block is launched along the ground by a spring with a spring constant of 56 cap n over m The spring is initially compressed 0 point 7 5 m Disregarding friction, how fast will the block move after the spring is released all the way and the block slides away from it?

On an ice skating rink, a girl of mass 50 kilograms stands stationary, face to face with a boy of mass 80 kilograms The children push off of one another, and the boy moves away with a velocity of 3 meters meters per second What is the final velocity of the girl?

Which label belongs in the area marked X?

Which diagram represents the forces acting on the block?

Which free body diagram shows the forces acting on block A?