Work and Energy Test

Last updated 20 days ago

32 questions

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Library

Work and Energy Test

Last updated 20 days ago

32 questions

1

3

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the change in internal energy for the gas?

1

3

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the work done by the piston on the gas to the nearest joule.

1

2

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the heat released by the gas to the nearest joule.

1

If the total heat produced by an internal combustion engine was the answer to the previous problem, then what is the efficiency of the engine if it does 1150J of work and 1638J of heat leaves the tailpipe? (to nearest tenth of a percent)

4

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Draw the FBD for this situation.

1

3

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the net Force in the x-direction to the nearest hundreth of a newton.

1

3

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the book's final velocity to nearest hundreth m/s.

1

2

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Find the mass of Isaac Newton to nearest tenth of a kg.

Rudolf the Red Nosed Reindeer (m=100kg) travels with a velocity of 10 m/s. If his smaller reindeer friend (m=5We0kg) is traveling with Rudolf at the same speed, what is his kinetic energy in comparison to Rudolf’s?

half as much

double

the same

four times as much

A 20 kg object falls 2.0 meters to the floor. At what point in its fall does the kinetic energy of the object equal its potential energy at a single moment in time?

halfway to the floor

very near to the top of the fall

the instant before it hits the floor

at all points of the fall

An object falls without friction near Earth’s surface. The loss of its potential energy is equal to its ______.

loss of height

gain in velocity

gain in kinetic energy

loss of mass

The action that would require no work to be done is _______________.

pushing a 25Kg box of books across the floor

holding a 10 Kg object over your head

lifting a balloon filled with air from the floor to a desktop

pedaling a 100N bicycle up a small hill

Running up a flight of stairs, Maria generates 250 watts of power. If it takes her 4 seconds to go up the stairs, the amount of work she does in running up the stairs is _______.

75 J

0.013 J

2700 J

1000 J

Which requires more work: lifting a 50 kg sack vertically 2 meters or lifting a 25 kg sack vertically 4 meters?

both require the same amount of work

lifting the 25 Kg sack

lifting the 50 Kg sack

Which has greater kinetic energy, a car traveling at 15 m/s or a half-as-massive car traveling at 30 m/s?

the 30 m/s car

the 15 m/s car

both have the same kinetic energy

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the kinetic energy the least?

A

B

C

D

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the potential energy the least?

A

B

C

D

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

Rank the positions from highest speed to lowest:

ABCD

DCBA

DBCA

ACBD

Potential energy is the energy an object has because of its ________.

force

position

mass

velocity

As a pendulum swings back and forth ___________.

KE turns into PE as it swings up

at the lowest point in its swing, it has the greatest KE

PE turns into KE as it swings down

its energy is all PE at the top of its swing

all of these statements are true

According to the first law of thermodynamics, the difference between energy transferred to or from a system by heat and energy transferred to or from a system by work is equivalent to which of the following?

Entropy change

Specific Heat

Change in internal energy

Change in temperature

A cup of water is scooped up from a swimming pool. Compare the temperature T and the internal energy U of the water in both the cup, and the swimming pool.

When mechanical work is done on a system (for example, the compression of air within a bicycle tire pump),

The internal energy always increases.

The internal energy always decreases.

Cannot be determined with the given information.

Which of the following best describes the relationship between two systems in thermal equilibrium?

the volumes are equal

no heat is exchanged

the average partice velocity is zero

the masses are equal

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the change in internal energy for the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the equation to find the work done by the piston on the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the work done by the piston on the gas to the nearest joule.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the equation to find the heat released by the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the heat released by the gas to the nearest joule.

If the total heat produced by an internal combustion engine was the answer to the previous problem, then what is the efficiency of the engine if it does 1150J of work and 1638J of heat leaves the tailpipe? (to nearest tenth of a percent)

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Draw the FBD for this situation.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the x-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the net Force in the x-direction to the nearest hundreth of a newton.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the y-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the work-kinetic energy theorem?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the equation to find the book's final velocity?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the book's final velocity to nearest hundreth m/s.

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Which of the following is the appropriate conservation of energy equation for this situation?

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Which of the following is the appropriate equation to find the mass of Isaac Newton?

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Find the mass of Isaac Newton to nearest tenth of a kg.

Rudolf the Red Nosed Reindeer (m=100kg) travels with a velocity of 10 m/s. If his smaller reindeer friend (m=5We0kg) is traveling with Rudolf at the same speed, what is his kinetic energy in comparison to Rudolf’s?

half as much

double

the same

four times as much

A 20 kg object falls 2.0 meters to the floor. At what point in its fall does the kinetic energy of the object equal its potential energy at a single moment in time?

halfway to the floor

very near to the top of the fall

the instant before it hits the floor

at all points of the fall

An object falls without friction near Earth’s surface. The loss of its potential energy is equal to its ______.

loss of height

gain in velocity

gain in kinetic energy

loss of mass

The action that would require no work to be done is _______________.

pushing a 25Kg box of books across the floor

holding a 10 Kg object over your head

lifting a balloon filled with air from the floor to a desktop

pedaling a 100N bicycle up a small hill

Running up a flight of stairs, Maria generates 250 watts of power. If it takes her 4 seconds to go up the stairs, the amount of work she does in running up the stairs is _______.

75 J

0.013 J

2700 J

1000 J

Which requires more work: lifting a 50 kg sack vertically 2 meters or lifting a 25 kg sack vertically 4 meters?

both require the same amount of work

lifting the 25 Kg sack

lifting the 50 Kg sack

Which has greater kinetic energy, a car traveling at 15 m/s or a half-as-massive car traveling at 30 m/s?

the 30 m/s car

the 15 m/s car

both have the same kinetic energy

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the kinetic energy the least?

A

B

C

D

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the potential energy the least?

A

B

C

D

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

Rank the positions from highest speed to lowest:

ABCD

DCBA

DBCA

ACBD

Potential energy is the energy an object has because of its ________.

force

position

mass

velocity

As a pendulum swings back and forth ___________.

KE turns into PE as it swings up

at the lowest point in its swing, it has the greatest KE

PE turns into KE as it swings down

its energy is all PE at the top of its swing

all of these statements are true

According to the first law of thermodynamics, the difference between energy transferred to or from a system by heat and energy transferred to or from a system by work is equivalent to which of the following?

Entropy change

Specific Heat

Change in internal energy

Change in temperature

A cup of water is scooped up from a swimming pool. Compare the temperature T and the internal energy U of the water in both the cup, and the swimming pool.

TPool > Tcup and U is same.

TPool < Tcup and U is same.

T is same, U is same.

T is same and UPool > Ucup.

T is same and UPool < Ucup.

When mechanical work is done on a system (for example, the compression of air within a bicycle tire pump),

The internal energy always increases.

The internal energy always decreases.

Cannot be determined with the given information.

Which of the following best describes the relationship between two systems in thermal equilibrium?

the volumes are equal

no heat is exchanged

the average partice velocity is zero

the masses are equal

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m.  The new internal energy was 3843 J.

What is the equation to find the work done by the piston on the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m.  The new internal energy was 3843 J.

What is the equation to find the heat released by the gas?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the x-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the y-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the work-kinetic energy theorem?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the equation to find the book's final velocity?

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Which of the following is the appropriate conservation of energy equation for this situation?

Ever the life of the party, Isaac Newton jumps off of a 10 m tall roof with an initial speed of 2.3 m/s into a bounce-house below. He lands on the floor of the bounce house, 1.5 meters above the ground, and compresses it by 0.6 meters. The spring constant of the bounce-house is 3.12 x 10^4 N/m.

Which of the following is the appropriate equation to find the mass of Isaac Newton?

Work and Energy Test

Work and Energy Test

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.What is the change in internal energy for the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.Find the work done by the piston on the gas to the nearest joule.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.Find the heat released by the gas to the nearest joule.

If the total heat produced by an internal combustion engine was the answer to the previous problem, then what is the efficiency of the engine if it does 1150J of work and 1638J of heat leaves the tailpipe? (to nearest tenth of a percent)

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Draw the FBD for this situation.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Find the net Force in the x-direction to the nearest hundreth of a newton.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Find the book's final velocity to nearest hundreth m/s.

Rudolf the Red Nosed Reindeer (m=100kg) travels with a velocity of 10 m/s. If his smaller reindeer friend (m=5We0kg) is traveling with Rudolf at the same speed, what is his kinetic energy in comparison to Rudolf’s?

A 20 kg object falls 2.0 meters to the floor. At what point in its fall does the kinetic energy of the object equal its potential energy at a single moment in time?

An object falls without friction near Earth’s surface. The loss of its potential energy is equal to its ______.

The action that would require no work to be done is _______________.

Running up a flight of stairs, Maria generates 250 watts of power. If it takes her 4 seconds to go up the stairs, the amount of work she does in running up the stairs is _______.

Which requires more work: lifting a 50 kg sack vertically 2 meters or lifting a 25 kg sack vertically 4 meters?

Which has greater kinetic energy, a car traveling at 15 m/s or a half-as-massive car traveling at 30 m/s?

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)At what point is the kinetic energy the least?

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)At what point is the potential energy the least?

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)Rank the positions from highest speed to lowest:

Potential energy is the energy an object has because of its ________.

As a pendulum swings back and forth ___________.

According to the first law of thermodynamics, the difference between energy transferred to or from a system by heat and energy transferred to or from a system by work is equivalent to which of the following?

A cup of water is scooped up from a swimming pool. Compare the temperature T and the internal energy U of the water in both the cup, and the swimming pool.

When mechanical work is done on a system (for example, the compression of air within a bicycle tire pump),

Which of the following best describes the relationship between two systems in thermal equilibrium?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.What is the change in internal energy for the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.What is the equation to find the work done by the piston on the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.Find the work done by the piston on the gas to the nearest joule.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.What is the equation to find the heat released by the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.Find the heat released by the gas to the nearest joule.

If the total heat produced by an internal combustion engine was the answer to the previous problem, then what is the efficiency of the engine if it does 1150J of work and 1638J of heat leaves the tailpipe? (to nearest tenth of a percent)

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Draw the FBD for this situation.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Which of these is the Fnet equation in the x-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Find the net Force in the x-direction to the nearest hundreth of a newton.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Which of these is the Fnet equation in the y-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Which of these is the work-kinetic energy theorem?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Which of these is the equation to find the book's final velocity?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.Find the book's final velocity to nearest hundreth m/s.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the change in internal energy for the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the work done by the piston on the gas to the nearest joule.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the heat released by the gas to the nearest joule.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Draw the FBD for this situation.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the net Force in the x-direction to the nearest hundreth of a newton.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the book's final velocity to nearest hundreth m/s.

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the kinetic energy the least?

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

At what point is the potential energy the least?

A roller coaster car is released from rest at position A, and moves through positions B, C, and D (friction negligible)

Rank the positions from highest speed to lowest:

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the change in internal energy for the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the equation to find the work done by the piston on the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the work done by the piston on the gas to the nearest joule.

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

What is the equation to find the heat released by the gas?

A gas in a large cylinder which contains a piston has 6568 J of Internal energy. The piston which has a surface area of 0.4 m^2 exerts a pressure of 35 P on the gas and moves 4.5 m. The new internal energy was 3843 J.

Find the heat released by the gas to the nearest joule.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Draw the FBD for this situation.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the x-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the net Force in the x-direction to the nearest hundreth of a newton.

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the Fnet equation in the y-direction?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the work-kinetic energy theorem?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Which of these is the equation to find the book's final velocity?

A 4.5kg book is pushed 2.3m across a table by an applied force of 146N. Tthe initial velocity of the book is 0.45m/s and µk is 0.23.

Find the book's final velocity to nearest hundreth m/s.