Question 1

According to the first law of thermodynamics, applied to a gas, the increase in the internal energy during any process:

Accepted Answer

A) equals the heat input minus the work done on the gas 
B) equals the heat input plus the work done on the gas 
C) equals the work done on the gas minus the heat input 
D) is independent of the heat input 
E) is independent of the work done on the gas 
A) equals the heat input minus the work done on the gas 
B) equals the heat input plus the work done on the gas 
C) equals the work done on the gas minus the heat input 
D) is independent of the heat input 
E) is independent of the work done on the gas B

Question 2

The energy given off by 300 grams of an alloy as it cools by 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 is:

Accepted Answer

A) 5.0 cal/g .C˚ 
B) 0.10 cal/g.C˚ 
C) 0.15 cal/g.C˚ 
D) 0.20 cal/g .C˚ 
E) 0.50 cal/g .C˚ 
A) 5.0 cal/g .C˚ 
B) 0.10 cal/g.C˚ 
C) 0.15 cal/g.C˚ 
D) 0.20 cal/g .C˚ 
E) 0.50 cal/g .C˚ D

Question 3

The coefficient of expansion of a certain type of steel is 0.000012 per C$\degree$.The coefficient of volume expansion is:

Accepted Answer

A) (0.000012)3 (C$\degree$-1 
B) (4 $\pi$/3)(0.000012)3 (C$\degree$)-1 
C) 3 * 0.000012 (C$\degree$)-1 
D) 0.000012 (C$\degree$)-1 
E) depends on the shape of the volume to which it will be applied 
A) (0.000012)3 (C$\degree$-1 
B) (4 $\pi$/3)(0.000012)3 (C$\degree$)-1 
C) 3 * 0.000012 (C$\degree$)-1 
D) 0.000012 (C$\degree$)-1 
E) depends on the shape of the volume to which it will be applied C

Question 4

An electric stove burner of diameter 20 cm is at a temperature of 250 °C.If σ = 5.67 x 10-8 W/m2·K4, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.

Accepted Answer

A) 4 W 
B) 80 W 
C) 320 W 
D) 1600 W 
E) 8000 W 
A) 4 W 
B) 80 W 
C) 320 W 
D) 1600 W 
E) 8000 W

Question 5

To help keep buildings cool in the summer, dark colored window shades have been replaced by light colored shades.This is because light colored shades:

Accepted Answer

A) are more pleasing to the eye 
B) absorb more sunlight 
C) reflect more sunlight 
D) transmit more sunlight 
E) have a lower thermal conductivity 
A) are more pleasing to the eye 
B) absorb more sunlight 
C) reflect more sunlight 
D) transmit more sunlight 
E) have a lower thermal conductivity

Question 6

Constant-volume gas thermometers using different gases all indicate nearly the same temperature when in contact with the same object if:

Accepted Answer

A) the volumes are all extremely large 
B) the volumes are all the same 
C) the pressures are all extremely large 
D) the pressures are the same 
E) the particle concentrations are all extremely small 
A) the volumes are all extremely large 
B) the volumes are all the same 
C) the pressures are all extremely large 
D) the pressures are the same 
E) the particle concentrations are all extremely small

Question 7

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

Question 8

One degree is the same on the following temperature scales:

Accepted Answer

A) Fahrenheit and Celsius 
B) Fahrenheit and Kelvin 
C) Celsius and Kelvin 
D) Fahrenheit and Absolute 
E) none of the above 
A) Fahrenheit and Celsius 
B) Fahrenheit and Kelvin 
C) Celsius and Kelvin 
D) Fahrenheit and Absolute 
E) none of the above

Question 9

The zeroth law of thermodynamics allows us to define

Accepted Answer

A) work 
B) pressure 
C) temperature 
D) thermal equilibrium 
E) internal energy 
A) work 
B) pressure 
C) temperature 
D) thermal equilibrium 
E) internal energy

Question 10

Solid A, with mass M, is at its melting point TA.It is placed in thermal contact with solid B, with heat capacity CB and initially at temperature TB (TB > TA).The combination is thermally isolated.A has latent heat of fusion L and when it has melted has heat capacity CA.If A completely melts the final temperature of both A and B is:

Accepted Answer

A) (CATA + CBTB - ML)/(CA + C
B)  
B) (CATA - CBTB + ML)/(CA + C
B)  
C) (CATA - CBTB - ML)/(CA + C
B)  
D) (CATA + CBTB + ML)/(CA - C
B)  
E) (CATA + CBtB + ML)/(CA - C
B)  
A) (CATA + CBTB - ML)/(CA + C
B)  
B) (CATA - CBTB + ML)/(CA + C
B)  
C) (CATA - CBTB - ML)/(CA + C
B)  
D) (CATA + CBTB + ML)/(CA - C
B)  
E) (CATA + CBtB + ML)/(CA - C
B)

Question 11

A cube of aluminum has an edge length of 20 cm.Aluminum has a density 2.7 times that of water (1 g/cm3)and a specific heat 0.217 times that of water (1 cal/g.C˚).When the internal energy of the cube increases by 47000 cal its temperature increases by:

Accepted Answer

A) 5 C˚ 
B) 10 C˚ 
C) 20 C˚ 
D) 100 C˚ 
E) 200 C˚ 
A) 5 C˚ 
B) 10 C˚ 
C) 20 C˚ 
D) 100 C˚ 
E) 200 C˚

Question 12

The "triple point" of a substance is that point for which the temperature and pressure are such that:

Accepted Answer

A) only solid and liquid are in equilibrium 
B) only liquid and vapor are in equilibrium 
C) only solid and vapor are in equilibrium 
D) solid, liquid and vapor are all in equilibrium 
E) the temperature, pressure and density are all numerically equal 
A) only solid and liquid are in equilibrium 
B) only liquid and vapor are in equilibrium 
C) only solid and vapor are in equilibrium 
D) solid, liquid and vapor are all in equilibrium 
E) the temperature, pressure and density are all numerically equal

Question 13

Room temperature is about 20 degrees on the:

Accepted Answer

A) Kelvin scale 
B) Celsius scale 
C) Fahrenheit scale 
D) absolute scale 
E) C major scale 
A) Kelvin scale 
B) Celsius scale 
C) Fahrenheit scale 
D) absolute scale 
E) C major scale

Question 14

On a very cold day, a child puts his tongue against a fence post.It is much more likely that his tongue will stick to a steel post than to a wooden post.This is because:

Accepted Answer

A) steel has a higher specific heat 
B) steel is a better radiator of heat 
C) steel has a higher specific gravity 
D) steel is a better heat conductor 
E) steel is a highly magnetic material 
A) steel has a higher specific heat 
B) steel is a better radiator of heat 
C) steel has a higher specific gravity 
D) steel is a better heat conductor 
E) steel is a highly magnetic material

Question 15

In the figure, what is the sign of the work done by the gas?

Accepted Answer

A) positive if the transition is A → B and negative if the transition is B → A 
B) negative if the transition is A → B and positive if the transition is B → A 
C) positive 
D) negative 
E) zero (no work is done) 
A) positive if the transition is A → B and negative if the transition is B → A 
B) negative if the transition is A → B and positive if the transition is B → A 
C) positive 
D) negative 
E) zero (no work is done)

Question 16

Fahrenheit and Kelvin scales agree numerically at a reading of:

Accepted Answer

A) -40° 
B) 0° 
C) 273° 
D) 301° 
E) 574° 
A) -40° 
B) 0° 
C) 273° 
D) 301° 
E) 574°

Question 17

The diagram shows four rectangular plates and their dimensions.All are made of the same material.The temperature now increases.Of these plates:

Accepted Answer

A) the vertical dimension of plate 1 increases the most and the area of plate 1 increases the most 
B) the vertical dimension of plate 2 increases the most and the area of plate 4 increases the most 
C) the vertical dimension of plate 3 increases the most and the area of plate 1 increases the most 
D) the vertical dimension of plate 4 increases the most and the area of plate 3 increases the most 
E) the vertical dimension of plate 4 increases the most and the area of plate 4 increases the most 
A) the vertical dimension of plate 1 increases the most and the area of plate 1 increases the most 
B) the vertical dimension of plate 2 increases the most and the area of plate 4 increases the most 
C) the vertical dimension of plate 3 increases the most and the area of plate 1 increases the most 
D) the vertical dimension of plate 4 increases the most and the area of plate 3 increases the most 
E) the vertical dimension of plate 4 increases the most and the area of plate 4 increases the most

Question 18

During an adiabatic process an object does 100 J of work and its temperature decreases by 5 K.During another process it does 25 J of work and its temperature decreases by 5 K.Its heat capacity for the second process is:

Accepted Answer

A) 20 J/K 
B) 24 J/K 
C) 5 J/K 
D) 15 J/K 
E) 100 J/K 
A) 20 J/K 
B) 24 J/K 
C) 5 J/K 
D) 15 J/K 
E) 100 J/K

Question 19

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 
A) 574$\degree$C 
B) 232$\degree$C 
C) 301$\degree$C 
D) 614$\degree$C 
E) 276$\degree$C

Question 20

A thermometer indicates 98.6$\degree$C.It may be:

Accepted Answer

A) outdoors on a cold day 
B) in a comfortable room 
C) in a cup of hot tea 
D) in a normal person's mouth 
E) in liquid air 
A) outdoors on a cold day 
B) in a comfortable room 
C) in a cup of hot tea 
D) in a normal person's mouth 
E) in liquid air

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

According to the first law of thermodynamics, applied to a gas, the increase in the internal energy during any process:

The energy given off by 300 grams of an alloy as it cools by 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 is:

The coefficient of expansion of a certain type of steel is 0.000012 per C °\degree° .The coefficient of volume expansion is:

An electric stove burner of diameter 20 cm is at a temperature of 250 °C.If σ = 5.67 x 10-8 W/m2·K4, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.

To help keep buildings cool in the summer, dark colored window shades have been replaced by light colored shades.This is because light colored shades:

Constant-volume gas thermometers using different gases all indicate nearly the same temperature when in contact with the same object if:

The formation of ice from water is accompanied by:

One degree is the same on the following temperature scales:

The zeroth law of thermodynamics allows us to define

A cube of aluminum has an edge length of 20 cm.Aluminum has a density 2.7 times that of water (1 g/cm3)and a specific heat 0.217 times that of water (1 cal/g.C˚).When the internal energy of the cube increases by 47000 cal its temperature increases by:

The "triple point" of a substance is that point for which the temperature and pressure are such that:

Room temperature is about 20 degrees on the:

On a very cold day, a child puts his tongue against a fence post.It is much more likely that his tongue will stick to a steel post than to a wooden post.This is because:

In the figure, what is the sign of the work done by the gas?

Fahrenheit and Kelvin scales agree numerically at a reading of:

The diagram shows four rectangular plates and their dimensions.All are made of the same material.The temperature now increases.Of these plates:

During an adiabatic process an object does 100 J of work and its temperature decreases by 5 K.During another process it does 25 J of work and its temperature decreases by 5 K.Its heat capacity for the second process is:

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

A thermometer indicates 98.6 °\degree° C.It may be:

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The energy given off by 300 grams of an alloy as it cools by 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 is:

The coefficient of expansion of a certain type of steel is 0.000012 per C $\degree$ .The coefficient of volume expansion is:

An electric stove burner of diameter 20 cm is at a temperature of 250 °C.If σ = 5.67 x 10^-8 W/m²·K⁴, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.

A cube of aluminum has an edge length of 20 cm.Aluminum has a density 2.7 times that of water (1 g/cm³)and a specific heat 0.217 times that of water (1 cal/g.C˚).When the internal energy of the cube increases by 47000 cal its temperature increases by:

A thermometer indicates 98.6 $\degree$ C.It may be: