Question 1

Heat is added to a 1.0-kg solid sample of a material at -200 °C. The figure shows the temperature of the material as a function of the heat added. 
-What is the specific heat capacity of this substance in its liquid state?

Accepted Answer

A) 0.33 cal/(g · C°) 
B) 0.75 cal/(g · C°) 
C) 1.00 cal/(g · C°) 
D) 1.33 cal/(g · C°) 
E) 3.00 cal/(g · C°)

Question 2

Absolute zero on the Celsius temperature scale is -273.15 °C. What is absolute zero on the Fahrenheit temperature scale?

Accepted Answer

A) -331.67 °F 
B) -363.67 °F 
C) -395.67 °F 
D) -427.67 °F 
E) -459.67 °F

Question 3

A circular hole in an copper plate is 2.925 cm in diameter at 20.0 °C. What is the diameter of the hole if the temperature of the plate is raised to 120.0 °C? The coefficient of linear expansion of copper is 17 × 10-6/C°.

Accepted Answer

A) 2.925 cm 
B) 2.929 cm 
C) 2.933 cm 
D) 2.957 cm 
E) 2.988 cm

Question 4

The digital sign outside a local bank reports that the temperature is 41 °C. What is the temperature in degrees Fahrenheit?

Accepted Answer

A) 79 °F 
B) 99 °F 
C) 106 °F 
D) 111 °F 
E) 120 °F

Question 5

Heat is added to a 1.0-kg solid sample of a material at -200 °C. The figure shows the temperature of the material as a function of the heat added. 
-Which one of the following statements concerning this substance is true?

Accepted Answer

A) It boils at 300 °C. 
B) It melts at -200 °C. 
C) It is a liquid at 200 °C. 
D) It can coexist as a solid and a liquid at -50 °C. 
E) It can exist as a solid, liquid, and gas at 150 °C.

Question 6

A 2.00-kg metal object requires 1.00 × 104 J of heat to raise its temperature from 20.0 °C to 40.0 °C. What is the specific heat capacity of the metal?

Accepted Answer

A) 50.0 J/(kg · C°) 
B) 125 J/(kg · C°) 
C) 250 J/(kg · C°) 
D) 500 J/(kg · C°) 
E) 1.00 × 103 J/(kg · C°)

Question 7

An aluminum plate has a length of 0.12 m and a width of 0.10 m at 25 °C. The plate is uniformly heated to 225 °C. If the linear expansion coefficient for aluminum is 2.3 × 10-5/C°, what is the change in the area of the plate as a result of the increase in temperature?

Accepted Answer

A) 1.2 × 10-4 m2 
B) 6.1 × 10-4 m2 
C) 3.2 × 10-5 m2 
D) 4.9 × 10-6 m2 
E) 7.8 × 10-6 m2

Question 8

The coefficient of volumetric expansion for gold is 4.20 × 10-5/C°. The density of gold is 19 300 kg/m3 at 0.0 °C. What is the density of gold at 1050 °C?

Accepted Answer

A) 20 200 kg/ m3 
B) 19 300 kg/m3 
C) 19 000 kg/m3 
D) 18 800 kg/m3 
E) 18 500 kg/m3

Question 9

What is the minimum amount of energy required to completely melt a 7.25-kg lead brick which has a starting temperature of 18.0 °C? The melting point of lead is 328 °C. The specific heat capacity of lead is 128 J/(kg · C°); and its latent heat of fusion is 23 200 J/kg.

Accepted Answer

A) 1.20 × 105 J 
B) 1.68 × 105 J 
C) 2.88 × 105 J 
D) 4.56 × 105 J 
E) 7.44 × 105 J

Question 10

A thermos bottle contains 3.0 kg of water and 2.0 kg of ice in thermal equilibrium at 0 °C. How much heat is required to bring the system to thermal equilibrium at 50 °C?

Accepted Answer

A) 1.05 × 106 J 
B) 1.30 × 106 J 
C) 1.72 × 106 J 
D) 2.26 × 106 J 
E) 1.13 × 107 J

Question 11

Heat is added to a substance, but its temperature does not rise. Which one of the following statements provides the best explanation for this observation?

Accepted Answer

A) The substance must be a gas. 
B) The substance must be a non-perfect solid. 
C) The substance undergoes a change of phase. 
D) The substance has unusual thermal properties. 
E) The substance must be cooler than its environment.

Question 12

A metal rod 40.0000-cm long at 55.0 °C is heated to 85.0 °C. The length of the rod is then measured to be 40.0264 cm. What is the coefficient of linear expansion of the metal?

Accepted Answer

A) 13 × 10-6/C° 
B) 22 × 10-6/C° 
C) 44 × 10-6/C° 
D) 53 × 10-6/C° 
E) 71 × 10-6/C°

Question 13

A 0.040-kg ice cube at 0 °C is placed in an insulated box that contains 0.0075 kg of steam at 100 °C. What is the equilibrium temperature reached by this closed system? Note: Assume that all of the ice melts.

Accepted Answer

A) 22.7 °C 
B) 33.6 °C 
C) 44.9 °C 
D) 50.7 °C 
E) 66.4 °C

Question 14

A 0.0500-kg lead bullet of volume 5.00 × 10S1U1P1–6S1S1P0 mS1U1P13S1S1P0 at 20.0 °C hits a block that is made of an ideal thermal insulator and comes to rest at its center.  At that time, the temperature of the bullet is 327 °C.  Use the following information for lead: 
-What additional heat would be needed to melt the bullet?

Accepted Answer

A) 420 J 
B) 628 J 
C) 837 J 
D) 1160 J 
E) 2010 J

Question 15

Complete the following statement: A temperature decrease of 30 C° is equal to a temperature decrease of

Accepted Answer

A) 30 F°. 
B) 30 K. 
C) 17 F°. 
D) 26 F°. 
E) 303 K.

Question 16

In an insulated container, 0.50 kg of steam, initially at 140 °C, is mixed with 2.0 kg of ice, initially at -20.0 °C. What is the final temperature inside the container if heat exchanges with the container are ignored?

Accepted Answer

A) 16 °C 
B) 50 °C 
C) 60 °C 
D) 64 °C 
E) 86 °C

Question 17

Given the following information, determine the relative humidity at 15 °C.

Accepted Answer

A) 39.0 % 
B) 47.9 % 
C) 50.8 % 
D) 64.1 % 
E) 71.9 %

Question 18

A 0.0500-kg lead bullet of volume 5.00 × 10S1U1P1–6S1S1P0 mS1U1P13S1S1P0 at 20.0 °C hits a block that is made of an ideal thermal insulator and comes to rest at its center.  At that time, the temperature of the bullet is 327 °C.  Use the following information for lead: 
-What is the volume of the bullet when it comes to rest?

Accepted Answer

A) 5.00 × 10-6 m3 
B) 5.01 × 10-6 m3 
C) 5.03 × 10-6 m3 
D) 5.07 × 10-6 m3 
E) 5.09 × 10-6 m3

Question 19

At a certain temperature, a simple pendulum has a period of 1.500 seconds. The support wire is made of brass and has a coefficient of linear thermal expansion of 1.90 × 10-5/C°. How much must the temperature be increased to increase the period to 1.506 seconds?

Accepted Answer

A) 118 C° 
B) 221 C° 
C) 316 C° 
D) 422 C° 
E) 528 C°

Question 20

Three thermometers are in the same water bath. After thermal equilibrium is established, it is found that the Celsius thermometer reads 0 °C, the Fahrenheit thermometer reads 12 °F, and the Kelvin thermometer reads 273 K. Which one of the following statements is the most reasonable conclusion?

Accepted Answer

A) The Kelvin thermometer is incorrect. 
B) The Celsius thermometer is incorrect. 
C) The Fahrenheit thermometer is incorrect. 
D) All three thermometers are incorrect. 
E) The three thermometers are at different temperatures.

Exam 12: Temperature and Heat

Heat is added to a 1.0-kg solid sample of a material at -200 °C. The figure shows the temperature of the material as a function of the heat added. -What is the specific heat capacity of this substance in its liquid state?

Absolute zero on the Celsius temperature scale is -273.15 °C. What is absolute zero on the Fahrenheit temperature scale?

A circular hole in an copper plate is 2.925 cm in diameter at 20.0 °C. What is the diameter of the hole if the temperature of the plate is raised to 120.0 °C? The coefficient of linear expansion of copper is 17 × 10^-⁶/C°.

The digital sign outside a local bank reports that the temperature is 41 °C. What is the temperature in degrees Fahrenheit?

Heat is added to a 1.0-kg solid sample of a material at -200 °C. The figure shows the temperature of the material as a function of the heat added. -Which one of the following statements concerning this substance is true?

A 2.00-kg metal object requires 1.00 × 10⁴ J of heat to raise its temperature from 20.0°C to 40.0°C. What is the specific heat capacity of the metal?

An aluminum plate has a length of 0.12 m and a width of 0.10 m at 25 °C. The plate is uniformly heated to 225 °C. If the linear expansion coefficient for aluminum is 2.3 × 10^-⁵/C°, what is the change in the area of the plate as a result of the increase in temperature?

The coefficient of volumetric expansion for gold is 4.20 × 10^-⁵/C°. The density of gold is 19 300 kg/m³ at 0.0 °C. What is the density of gold at 1050 °C?

What is the minimum amount of energy required to completely melt a 7.25-kg lead brick which has a starting temperature of 18.0 °C? The melting point of lead is 328 °C. The specific heat capacity of lead is 128 J/(kg · C°) ; and its latent heat of fusion is 23 200 J/kg.

A thermos bottle contains 3.0 kg of water and 2.0 kg of ice in thermal equilibrium at 0°C. How much heat is required to bring the system to thermal equilibrium at 50°C?

Heat is added to a substance, but its temperature does not rise. Which one of the following statements provides the best explanation for this observation?

A metal rod 40.0000-cm long at 55.0 °C is heated to 85.0 °C. The length of the rod is then measured to be 40.0264 cm. What is the coefficient of linear expansion of the metal?

A 0.040-kg ice cube at 0 °C is placed in an insulated box that contains 0.0075 kg of steam at 100 °C. What is the equilibrium temperature reached by this closed system? Note: Assume that all of the ice melts.

Complete the following statement: A temperature decrease of 30 C° is equal to a temperature decrease of

In an insulated container, 0.50 kg of steam, initially at 140°C, is mixed with 2.0 kg of ice, initially at -20.0 °C. What is the final temperature inside the container if heat exchanges with the container are ignored?

Given the following information, determine the relative humidity at 15 °C.

At a certain temperature, a simple pendulum has a period of 1.500 seconds. The support wire is made of brass and has a coefficient of linear thermal expansion of 1.90 × 10^-⁵/C°. How much must the temperature be increased to increase the period to 1.506 seconds?

Three thermometers are in the same water bath. After thermal equilibrium is established, it is found that the Celsius thermometer reads 0 °C, the Fahrenheit thermometer reads 12°F, and the Kelvin thermometer reads 273 K. Which one of the following statements is the most reasonable conclusion?