Question 1

The units of thermal conductivity might be:

Accepted Answer

A)   cal . cm/(s .C °\degree° ) 
B)   cal/(cm . s .C °\degree° ) 
C)   cal .s/(cm .C °\degree° ) 
D)   cm . s .C °\degree° /cal
E)   C °\degree° /(cal . cm . s)  F) C) and E)
G) D) and E)

Question 2

Possible units for the coefficient of volume expansion are:

Accepted Answer

A)   mm/C  °\degree° 
B)   mm3/C  °\degree° 
C)   (C  °\degree° ) 3
D)   1/(C  °\degree° ) 3
E)   1/C  °\degree°F) A) and B)
G) A) and D)

Question 3

Of the following which might NOT vanish over one cycle of a cyclic process?

Accepted Answer

A)   the change in the internal energy of the substance
B)   the change in pressure of the substance
C)   the work done by the substance
D)   the change in the volume of the substance
E)   the change in the temperature of the substanceF) A) and B)
G) C) and E)

Question 4

The diagram shows four thermometers, labeled W, X, Y, and Z. The freezing and boiling points of water are indicated. Rank the thermometers according to the size of a degree on their scales, smallest to largest.

Accepted Answer

A)   W, X, Y, Z
B)   Z, Y, X, W
C)   Z, Y, W, X
D)   Z, X, W, Y
E)   W, Y, Z, XF) C) and D)
G) B) and E)

Question 5

A constant-volume gas thermometer is used to measure the temperature of an object. When the thermometer is in contact with water at its triple point (273.16 K)  the pressure in the thermometer is 8.500 * 104 Pa. When it is in contact with the object the pressure is 9.650 *104 Pa. The temperature of the object is:

Accepted Answer

A)   37.0 K
B)   241 K
C)   310 K
D)   314 K
E)   2020 KF) B) and D)
G) B) and C)

Question 6

The energy given off by 300 grams of an alloy as it cools through 50 °\degree° C raises the temperature of 300 grams of water from 30 °\degree° C to 40 °\degree° C. The specific heat of the alloy (in cal/g .C˚)  is:

Accepted Answer

A)   0.015
B)   0.10
C)   0.15
D)   0.20
E)   0.50 F) C) and E)
G) B) and D)

Question 7

The rate of heat flow through a slab is Pcond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:

Accepted Answer

A)   2Pcond
B)   Pcond/2
C)   Pcond
D)   Pcond/8
E)   8PcondF) A) and C)
G) A) and E)

Question 8

The heat capacity at constant volume and the heat capacity at constant pressure have different values because:

Accepted Answer

A)   heat increases the internal energy at constant volume but not at constant pressure
B)   heat increases the internal energy at constant pressure but not at constant volume
C)   the system does work at constant volume but not at constant pressure
D)   the system does work at constant pressure but not at constant volume
E)   the system does more work at constant volume than at constant pressureF) All of the above
G) A) and C)

Question 9

A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:

Accepted Answer

A)   574  °\degree° C
B)   232  °\degree° C
C)   301  °\degree° C
D)   614  °\degree° C
E)   276  °\degree° C F) All of the above
G) A) and B)

Question 10

A gram of distilled water at 4  °\degree° C:

Accepted Answer

A)   will increase slightly in weight when heated to 6  °\degree° C
B)   will decrease slightly in weight when heated to 6  °\degree° C
C)   will increase slightly in volume when heated to 6  °\degree° C
D)   will decrease slightly in volume when heated to 6  °\degree° C
E)   will not change in either volume or weight F) A) and D)
G) None of the above

Question 11

There is a temperature at which the reading on the Kelvin scale is numerically:

Accepted Answer

A)   equal to that on the Celsius scale
B)   lower than that on the Celsius scale
C)   equal to that on the Fahrenheit scale
D)   less than zero
E)   none of the aboveF) A) and B)
G) A) and C)

Question 12

A balloon is filled with cold air and placed in a warm room. It is NOT in thermal equilibrium with the air of the room until

Accepted Answer

A)   it rises to the ceiling
B)   it sinks to the floor
C)   it stops expanding
D)   it starts to contract
E)   none of the aboveF) B) and D)
G) A) and B)

Question 13

Heat has the same units as:

Accepted Answer

A)   temperature
B)   work
C)   energy/time
D)   heat capacity
E)   energy/volumeF) A) and B)
G) C) and D)

Question 14

The zeroth law of thermodynamics allows us to define

Accepted Answer

A)   work
B)   pressure
C)   temperature
D)   thermal equilibrium
E)   internal energyF) A) and C)
G) A) and E)

Question 15

The figure shows a rectangular brass plate at 0  °\degree° C in which there is cut a rectangular hole of dimensions indicated. If the temperature of the plate is raised to 150  °\degree° C:

Accepted Answer

A)   x will increase and y will decrease
B)   both x and y will decrease
C)   x will decrease and y will increase
D)   both x and y will increase
E)   the changes in x and y depend on the dimension z F) A) and D)
G) B) and E)

Question 16

The formation of ice from water is accompanied by:

Accepted Answer

A)   absorption of energy as heat
B)   temperature increase
C)   decrease in volume
D)   an evolution of heat
E)   temperature decreaseF) B) and E)
G) C) and D)

Question 17

A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in a time T. The specific latent heat of fusion of this metal is:

Accepted Answer

A)   P/MT
B)   T/PM
C)   PM/T
D)   PMT
E)   PT/MF) A) and D)
G) All of the above

Question 18

A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true?

Accepted Answer

A)   20 J of work was done on the system
B)   20 J of work was done by the system
C)   the system received 20 J of energy as heat
D)   the system lost 20 J of energy as heat
E)   none of the above are trueF) B) and E)
G) A) and B)

Question 19

When a certain constant volume gas thermometer is in thermal contact with water at its triple point (273.16 K)  the pressure is 6.30 *104 Pa. For this thermometer a kelvin corresponds to a change in pressure of about:

Accepted Answer

A)   4.34 * 102 Pa
B)   2.31*102 Pa
C)   1.72* 103 Pa
D)   2.31 * 103 Pa
E)   1.72 * 107 PaF) All of the above
G) B) and E)

Question 20

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

Accepted Answer

A)   200 K
B)   300 K
C)   400 K
D)   450 K
E)   600 KF) B) and D)
G) D) and E)

Exam 18: Temperature, Heat, and the First Law of Thermodynamics

Correct Answer
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A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true?

Correct Answer
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A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:

Correct Answer
verified

A gram of distilled water at 4 $\degree$ C:

Correct Answer
verified

When a certain constant volume gas thermometer is in thermal contact with water at its triple point (273.16 K) the pressure is 6.30 *10⁴ Pa. For this thermometer a kelvin corresponds to a change in pressure of about:

Correct Answer
verified

The units of thermal conductivity might be:

Correct Answer
verified

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

Correct Answer
verified

Heat has the same units as:

Correct Answer
verified

The energy given off by 300 grams of an alloy as it cools through 50 $\degree$ C raises the temperature of 300 grams of water from 30 $\degree$ C to 40 $\degree$ C. The specific heat of the alloy (in cal/g .C˚) is:

Correct Answer
verified

The zeroth law of thermodynamics allows us to define

Correct Answer
verified

Of the following which might NOT vanish over one cycle of a cyclic process?

Correct Answer
verified

The rate of heat flow through a slab is P_cond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:

Correct Answer
verified

The formation of ice from water is accompanied by:

Correct Answer
verified

Correct Answer
verified

Possible units for the coefficient of volume expansion are:

Correct Answer
verified

A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in a time T. The specific latent heat of fusion of this metal is:

Correct Answer
verified

The diagram shows four thermometers, labeled W, X, Y, and Z. The freezing and boiling points of water are indicated. Rank the thermometers according to the size of a degree on their scales, smallest to largest.

Correct Answer
verified

There is a temperature at which the reading on the Kelvin scale is numerically:

Correct Answer
verified

The heat capacity at constant volume and the heat capacity at constant pressure have different values because:

Correct Answer
verified

A balloon is filled with cold air and placed in a warm room. It is NOT in thermal equilibrium with the air of the room until

Correct Answer
verified

Exam 18: Temperature, Heat, and the First Law of Thermodynamics

The figure shows a rectangular brass plate at 0 °\degree° C in which there is cut a rectangular hole of dimensions indicated. If the temperature of the plate is raised to 150 °\degree° C:

Correct AnswerverifiedShow Answer

A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true?

Correct AnswerverifiedShow Answer

A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:

Correct AnswerverifiedShow Answer

A gram of distilled water at 4 °\degree° C:

Correct AnswerverifiedShow Answer

When a certain constant volume gas thermometer is in thermal contact with water at its triple point (273.16 K) the pressure is 6.30 *104 Pa. For this thermometer a kelvin corresponds to a change in pressure of about:

Correct AnswerverifiedShow Answer

The units of thermal conductivity might be:

Correct AnswerverifiedShow Answer

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

Correct AnswerverifiedShow Answer

Heat has the same units as:

Correct AnswerverifiedShow Answer

The energy given off by 300 grams of an alloy as it cools through 50 °\degree° C raises the temperature of 300 grams of water from 30 °\degree° C to 40 °\degree° C. The specific heat of the alloy (in cal/g .C˚) is:

Correct AnswerverifiedShow Answer

The zeroth law of thermodynamics allows us to define

Correct AnswerverifiedShow Answer

Of the following which might NOT vanish over one cycle of a cyclic process?

Correct AnswerverifiedShow Answer

The rate of heat flow through a slab is Pcond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:

Correct AnswerverifiedShow Answer

The formation of ice from water is accompanied by:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Possible units for the coefficient of volume expansion are:

Correct AnswerverifiedShow Answer

A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in a time T. The specific latent heat of fusion of this metal is:

Correct AnswerverifiedShow Answer

The diagram shows four thermometers, labeled W, X, Y, and Z. The freezing and boiling points of water are indicated. Rank the thermometers according to the size of a degree on their scales, smallest to largest.

Correct AnswerverifiedShow Answer

There is a temperature at which the reading on the Kelvin scale is numerically:

Correct AnswerverifiedShow Answer

The heat capacity at constant volume and the heat capacity at constant pressure have different values because:

Correct AnswerverifiedShow Answer

A balloon is filled with cold air and placed in a warm room. It is NOT in thermal equilibrium with the air of the room until

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A gram of distilled water at 4 $\degree$ C:

Correct Answer
verified

When a certain constant volume gas thermometer is in thermal contact with water at its triple point (273.16 K) the pressure is 6.30 *10⁴ Pa. For this thermometer a kelvin corresponds to a change in pressure of about:

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The energy given off by 300 grams of an alloy as it cools through 50 $\degree$ C raises the temperature of 300 grams of water from 30 $\degree$ C to 40 $\degree$ C. The specific heat of the alloy (in cal/g .C˚) is:

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The rate of heat flow through a slab is P_cond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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