Slide 1 / 66 Slide 2 / 66 1 What is the name of the following statement: 2 An aluminum plate has a circular hole. If the temperature of the plate increases, what happens "When two systems are in thermal equilibrium with a third system, then they are in thermal to the size of the hole? equilibrium with each other"? A First Law of Thermodynamics A Increases Second Law of Thermodynamics B B Decreases Mechanical Equivalent of Heat C C Stays the same D Zeroth Law of Thermodynamics Increases at the top half of the hole D Thermal Expansion of Solids More information is required E E Slide 3 / 66 Slide 4 / 66 3 A bimetal plate consists of two materials of 4 Which of the following temperature scales doesn't different coefficients of thermal expansion. The have negative numbers? coefficient of thermal expansion of the top part of the plate is less than the bottom part. If the A Celsius temperature of the entire plate increases, what Kelvin B happens to the plate? C Reaumur Expands A D Fahrenheit Contracts B Galileo E Stays the same C D Bends down Bends up E Slide 5 / 66 Slide 6 / 66 5 Which of the two temperature changes are 6 The state of an ideal gas was changed three times equivalent? at three different temperatures. The diagram represents three different isothermal curves. Which of the following is true about the A 1 K = 1 F temperature of the gas? 1 F = 1 C B 1 Re = 1 F A T 1 > T 2 > T 3 C 1 K = 1 C T 1 > T 2 < T 3 D B T 1 < T 2 < T 3 1 Re = 1 K C E D T 1 > T 2 = T 3 T 1 = T 2 > T 3 E
Slide 7 / 66 Slide 8 / 66 7 A container is filled with a sample of an ideal gas 8 The state of an ideal gas was changed three times at a pressure of 1.5 atm. The gas is compressed in a way that the pressure stays the same. The isothermally to one-fourth of its original volume. graph represents three isobaric lines. Which of the What is the new pressure of the gas? following is true about the pressure of the gas? A 2 atm P 1 > P 2 < P 3 A 3 atm P 1 > P 2 > P 3 B B 4 atm P 1 < P 2 < P 3 C C 5 atm D P 1 = P 2 > P 3 D 6 atm P 1 > P 2 = P 3 E E Slide 9 / 66 Slide 10 / 66 9 The temperature of an ideal gas increases from 10 The state of an ideal gas was changed three times 20 O C to 40 O C while the pressure stays the same. in a way that the volume stays the same. The What happens to the volume of the gas? graph represents three isobaric lines. Which of the following is true about the volume of the gas? A It doubles A V 1 > V 2 > V 3 It quadruples B V 1 > V 2 < V 3 B It is cut to one-half C V 1 < V 2 < V 3 C D It is cut to one-fourth V 1 = V 2 > V 3 D It slightly increases E V 1 > V 2 = V 3 E Slide 11 / 66 Slide 12 / 66 11 A container with rigid walls filled with a sample of 12 The absolute temperature of an ideal diatomic gas ideal gas. The absolute temperature of the gas is is quadrupled. What happens to the average doubled. What happens to the pressure of the speed of the molecules? gas? A Quadruples A Doubles Doubles B Quadruples B C Triples C Triples Increases by a factor of 1.41 D D Decreased to one-half Stays the same E Decreased to one-fourth E
Slide 13 / 66 Slide 14 / 66 13 Two containers are filled with diatomic hydrogen 14 The average molecular kinetic energy of a gas gas and diatomic oxygen gas. The gases have the depends on: same temperature. Compare the average speed of the hydrogen molecules to the average speed of A Pressure the oxygen molecules. Volume B A 1/16 Temperature C 1/4 Number of holes B D 16/1 C E None of the above 1/2 D E 4/1 Slide 15 / 66 Slide 16 / 66 15 Kinetic Theory is based on an ideal gas model. 16 Internal energy of an ideal gas depends on: The following statements about the ideal gas are I. the volume of the ideal gas. true EXCEPT: III. the pressure of the ideal gas III. the absolute temperature of the ideal gas. A The average molecular kinetic energy is directly proportional to the absolute temperature A I B All molecules move with the same speed II B All molecules make elastic collisions with each other and the III C C walls of the container I and II D D The attractive force between the molecules can be ignored I, II, and III E All molecules obey laws of classical mechanics E Slide 17 / 66 Slide 18 / 66 17 A sample of ideal gas has an internal energy U and 18 An ideal gas with an internal energy U initially at 0 O C is heated to 273 C. What is the new internal is then compressed to one-half of its original volume while the temperature stays the same. energy in terms of U? What is the new internal energy of the ideal gas in terms of U? A U A U U/2 B U/2 B U/4 C C U/4 2U D 2U D 4U E 4U E
Slide 19 / 66 Slide 20 / 66 20 Three containers filled with 1 kg each of: water, 19 Mechanical equivalent is associated with: ice, and water vapor are at the same temperature T = 0 C. Which of the following is true about the A Newton internal energy of the substances? Kelvin B Joule C D Boltzmann Avogadro E A U water > U ice > U vapor U water < U ice > U vapor B U water = U ice = U vapor C D U water < U ice < U vapor U ice < U water < U vapor E Slide 21 / 66 Slide 22 / 66 21 A silver tea spoon is placed in a cup filled with hot 22 The process of heat transfer from object to tea. After some time, the exposed end of the another object because of molecular motion and spoon becomes hot even without direct contact interaction is called: with the liquid. This phenomenon can be explained by: A Convection Conduction B Thermal Expansion A Radiation C B Conduction D Induction C Convection None of the above E D Radiation Emission E Slide 23 / 66 Slide 24 / 66 23 A hot object with a temperature of T1 is connected 24 When we touch a piece of metal and a piece of to a cool object with a temperature of T2. The wood that are placed in the same room, the piece object used to conduct the heat has a length L of metal feels much colder than the piece of wood. and a cross-sectional area A. The rate of heat flow This happens because of the difference in: is: Specific Heat A Temperature B C Density D Thermal Conductivity A A(T 1 – T 2 )/kL Latent Heat E k(T 1 – T 2 )/AL B C kAL/(T 1 – T 2 ) D kL(T 1 – T 2 )/A E kA(T 1 – T 2 )/L
Slide 25 / 66 Slide 26 / 66 25 The process of heat transfer by the movement of 26 Which mechanism of heat transfer is involved in mass from one place to another is called: heating a pot with water on a stove? A Convection A Convection Conduction Conduction B B Radiation Radiation C C Induction Induction D D E None of the above E None of the above Slide 27 / 66 Slide 28 / 66 27 Which mechanism of heat transfer is involved in 28 If the absolute temperature of a radiating object is heat flow from the Sun to the Earth? doubled, by what factor does the rate of energy emission change? A Convection A 2 Conduction B 4 B Radiation C 8 C Induction D D 16 None of the above E 32 E Slide 29 / 66 Slide 30 / 66 29 The state of an ideal gas changed isothermally 30 An ideal gas is taken from state 1 to state 2 and from position 1 to position 2 is shown below. What then to state 3. If the process 1-2 is adiabatic and is the change in the internal energy of the gas 2-3 is isothermal, what is a true statement about during the process? the change in temperature and heat transferred during 1-2? A ΔU = W A ΔT > 0, Q > 0 ΔU = Q B ΔT < 0, Q = 0 B C ΔU > 0 ΔT = 0, Q = 0 C ΔU = 0 D D ΔT > 0, Q < 0 ΔU < 0 E ΔT = 0, Q < 0 E
Slide 31 / 66 Slide 32 / 66 31 The state of an ideal gas is changed in a closed 32 The change of the state of an ideal gas is path 1→2→3→4→1. Which of the following is true presented by the diagram. What is the ratio about work done on the gas? between work done on the gas during the process 2→3 and the work done on the gas during the process 4→1? A 2/1 1/2 B 4/1 C Work 1→2 Work 2→3 Work 3→4 Work 4→1 1/4 D A W > 0 W = 0 W < 0 W = 0 E 3/1 W < 0 W = 0 W = 0 W > 0 B C W < 0 W = 0 W > 0 W = 0 D W = 0 W > 0 W = 0 W < 0 E W = 0 W < 0 W = 0 W > 0 Slide 33 / 66 Slide 34 / 66 33 An ideal gas is taken through a closed path 1→2→ 34 Which of the following is a characteristic of an 3→4→1. What is the net work done by the gas? adiabatic process? A 6PV A ΔU = 0 9PV W = 0 B B 4PV Q = 0 C C -6PV ΔV = 0 D D -9PV ΔP = 0 E E Slide 35 / 66 Slide 36 / 66 35 A sample of an ideal 36 A sample of an ideal gas taken through a gas taken through a closed cycle is closed cycle is presented by the P-V presented by the P-V diagram. The process diagram. The process 1-2 is perfectly 1-2 is perfectly isothermal. which of isothermal. which of the following is true the following is true about the change in about the change in internal energy and internal energy and work done by the gas work done by the gas during the process 1-2? during the process 3-1? A Δ U = 0 W by the gas > 0 A Δ U = 0 Q > 0 B Δ U > 0 W by the gas = 0 Δ U > 0 Q > 0 B Δ U < 0 W by the gas < 0 C C Δ U < 0 Q < 0 Δ U = 0 W by the gas = 0 Δ U = 0 Q = 0 D D Δ U = 0 W by the gas < 0 Δ U = 0 Q < 0 E E
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