MINI QUIZ

1.Heat is

A. the amount of thermal energy in an object.

B. the energy that moves from a hotter object to a colder object

C. a fluid-like substance that flows from a fluid a hotter object to a colder object.

D. both A and B.

E. both B and C

2.What was the original unit for measuring heat?

A.BTU

B. Watt

C. Joule
C. Joule

D. Pascal

E. Calorie

3.Suppose you are an astronaut in space, hard at work in your sealed spacesuit. The only way that you can transfer excess heat to the environment is by

A. conduction
B. radiation
C. convection
D. evaporation

4. Which of the following processes involve heat?

A. The brakes in your car get hot when you stop.

B. You push a rigid cylinder of gas across a frictionless surface.
C.A steel block is placed under a candle.

D. You push a piston into a cylinder of gas, increasing the temperature of the gas.

5.A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

A. 114 kJ

B.54 kJ

C. 30 kJ

D. 84 kJ

6.In an irreversible process, there is a

A. no loss of heat                                            

B. loss of heat                                           

C. no gain of heat                                           

D. gain of heat

7.For a perfect gas, according to Boyle’s law (where p = Absolute pressure, v = Volume, and T = Absolute temperature)

A. p v = constant, if T is kept constant

B. T/p = constant, if v is kept constant                                        

C.v/T = constant, if p is kept constant                                          

D p/T = constant, if v is kept constant                                         

  
8. In a certain process, 6000 J of heat is added to a system while the system does work equivalent to 9000 J by expanding against the surrounding atmosphere. What is the change in internal energy for the system?
A. 12000 J
B. 3000J
C. -3000J
D. 1000J

9. In a certain process, 600 J of work is done on the system which gives off 250 J of heat. What is the change in internal energy for the process?
A. 350 J
B. -350 J
C. 950 J
D. 300 J

10. In a certain process, 675 J of heat is absorbed by a system while 290 J of work is done on the system. What is the change in internal energy for the process?

A. 110 J
B. 290 J
C. 345 J
D. 965J

.A cart travels along a frictionless roller coaster track. At point A, the cart is 10 m above the ground and traveling at 2 m/s.
11. What is the velocity at point B when the cart reaches the ground?
12What is the velocity of the cart at point C when the cart reaches a height of 3 m?
13.What is the maximum height the cart can reach before the cart stops?

14. Kinetic energy is the energy an object has due to its ________.

	A.Position
	B. Weight
	C. Mass
	D.Gravity
	E. Motion

15. If a 2 kg ball is traveling at 4 meters per second, what is its kinetic energy?
	A.1 J
	B. 2J
	C.4 J
	D.8 J
	E.16 J

Answers

1. B

2. E

3. B

4. C

5. B

6. B

7. A
8. C
9. A
10. D
11. 14.1
12. 11.9
13. 10.2
14. E
15. D