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Chapter 17. A gas cylinder and piston are covered with heavy insulation. The piston is pushed into the cylinder, compressing the gas. In this process,

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Presentation on theme: "Chapter 17. A gas cylinder and piston are covered with heavy insulation. The piston is pushed into the cylinder, compressing the gas. In this process,"— Presentation transcript:

1 Chapter 17

2 A gas cylinder and piston are covered with heavy insulation. The piston is pushed into the cylinder, compressing the gas. In this process, the gas temperature 1. doesn’t change. 2. decreases. 3. increases. 4. there’s not sufficient information to tell.

3 A gas cylinder and piston are covered with heavy insulation. The piston is pushed into the cylinder, compressing the gas. In this process, the gas temperature 1. doesn’t change. 2. decreases. 3. increases. 4. there’s not sufficient information to tell.

4 Two process are shown that take an ideal gas from state 1 to state 3. Compare the work done by process A to the work done by process B. 1. W A = W B = 0 2. W A > W B 3. W A = W B but neither is zero 4. W A < W B

5 Two process are shown that take an ideal gas from state 1 to state 3. Compare the work done by process A to the work done by process B. 1. W A = W B = 0 2. W A > W B 3. W A = W B but neither is zero 4. W A < W B

6 Which of the following processes involve heat? 1. The brakes in your car get hot when you stop. 2. A steel block is placed under a candle. 3. You push a rigid cylinder of gas across a frictionless surface. 4. You push a piston into a cylinder of gas, increasing the temperature of the gas. 5. You place a cylinder of gas in hot water. The gas expands, causing a piston to rise and lift a weight. The temperature of the gas does not change.

7 Which of the following processes involve heat? 1. The brakes in your car get hot when you stop. 2. A steel block is placed under a candle. 3. You push a rigid cylinder of gas across a frictionless surface. 4. You push a piston into a cylinder of gas, increasing the temperature of the gas. 5. You place a cylinder of gas in hot water. The gas expands, causing a piston to rise and lift a weight. The temperature of the gas does not change.

8 Which first-law bar chart describes the process shown in the pV diagram? (1)(2) (3) (4)(5)

9 Which first-law bar chart describes the process shown in the pV diagram? (1)(2) (3) (4)(5)

10 Objects A and B are brought into close thermal contact with each other, but they are well isolated from their surroundings. Initially T A = 0°C and T B = 100°C. The specific heat of A is more than the specific heat of B. The two objects will soon reach a common final temperature T f. The final temperature is 1. T f > 50°C. 2. T f = 50°C. 3. T f < 50°C.

11 Objects A and B are brought into close thermal contact with each other, but they are well isolated from their surroundings. Initially T A = 0°C and T B = 100°C. The specific heat of A is more than the specific heat of B. The two objects will soon reach a common final temperature T f. The final temperature is 1. T f > 50°C. 2. T f = 50°C. 3. T f < 50°C.

12 For the two processes shown, which of the following is true: 1. Q A < Q B. 2. Q A = Q B. 3. Q A > Q B.

13 For the two processes shown, which of the following is true: 1. Q A < Q B. 2. Q A = Q B. 3. Q A > Q B.

14 Chapter 17 Reading Quiz

15 What quantities appear in the first law of thermodynamics? 1. force, mass, acceleartion 2. inertia, torque, angular momentum 3. work, heat, thermal energy 4. work, heat, entropy 5. enthalpy, entropy, heat

16 What quantities appear in the first law of thermodynamics? 1. force, mass, acceleartion 2. inertia, torque, angular momentum 3. work, heat, thermal energy 4. work, heat, entropy 5. enthalpy, entropy, heat

17 What was the original unit for measuring heat? 1. BTU 2. Watt 3. Joule 4. Pascal 5. Calorie

18 What was the original unit for measuring heat? 1. BTU 2. Watt 3. Joule 4. Pascal 5. Calorie

19 What is the name of an ideal-gas process in which no heat is transferred? 1. Isochoric 2. Isentropic 3. Isothermal 4. Isobaric 5. Adiabatic

20 What is the name of an ideal-gas process in which no heat is transferred? 1. Isochoric 2. Isentropic 3. Isothermal 4. Isobaric 5. Adiabatic

21 Heat is 1. the amount of thermal energy in an object. 2. the energy that moves from a hotter object to a colder object. 3. a fluid-like substance that flows from a hotter object to a colder object. 4. Both 1 and Both 2 and 3.

22 Heat is 1. the amount of thermal energy in an object. 2. the energy that moves from a hotter object to a colder object. 3. a fluid-like substance that flows from a hotter object to a colder object. 4. Both 1 and Both 2 and 3.

23 The thermal behavior of water is characterized by the value of its 1. heat density. 2. heat constant. 3. specific heat. 4. thermal index.

24 The thermal behavior of water is characterized by the value of its 1. heat density. 2. heat constant. 3. specific heat. 4. thermal index.


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