Question 1

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−6/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

Accepted Answer

A) 300.0015 m. 
B) 300.015 m. 
C) 300.15 m. 
D) 301.5 m. 
E) 315 m.

Question 2

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-After the 1 kg block of ice melts,the amount of heat required to raise its temperature to 10 °C is

Accepted Answer

A) 2,000 J. 
B) 4,000 J. 
C) 20,000 J. 
D) 40,000 J. 
E) 334,000 J.

Question 3

When you add heat to ice,its temperature always stays constant.

Accepted Answer

A) True 
 B)False

Question 4

In a steam engine,steam at 140°C in a turbine does work on an external system,and the steam leaves the turbine at 100°C.The efficiency of the steam engine is 5%.The relevant physical principle is the __________ law of thermodynamics.

Accepted Answer

The answer of In a steam engine,steam at 140°C in...

Question 5

In a gas of different types of molecules all at the same temperature,the speeds of the heavier molecules will generally be _____________ the speeds of the lighter molecules.

Accepted Answer

A) the same as 
B) greater than 
C) less than 
D) unrelated to

Question 6

Which of these is stated properly?

Accepted Answer

A) "The temperature of liquid nitrogen is 77 Kelvin." 
B) "The temperature of liquid nitrogen is 77 Kelvins." 
C) "The temperature of liquid nitrogen is 77 degrees Kelvin." 
D) "The temperature of liquid nitrogen is 77 Kelvin degrees."

Question 7

When water boils,its temperature

Accepted Answer

A) increases. 
B) decreases. 
C) stays constant. 
D) cannot be determined.

Question 8

Heat is transferred from a substance if it is exposed to something that has a lower temperature.

Accepted Answer

A) True 
 B)False

Question 9

Match each item with the correct statement below.
-At temperatures below their boiling point,liquids gradually go into the gas phase through a process called

Accepted Answer

A) bimetallic strip 
B) Carnot efficiency 
C) conduction 
D) convection 
E) entropy
F)evaporation
G)heat
H)heat engine
I)heat mover
J)humidity
K)internal energy
L)radiation
M)saturation density
N)temperature

Question 10

What's wrong with the statement "heat rises?"

Accepted Answer

A) Nothing-heat does rise. 
B) One should say "energy rises." 
C) One should say "heated air (or other fluid)rises." 
D) none of the above

Question 11

A bimetallic strip is formed from two materials that have different __________.

Accepted Answer

The answer of A bimetallic strip is formed from two...

Question 12

Match each item with the correct statement below.
-the density of water vapor in the air

Accepted Answer

A) bimetallic strip 
B) Carnot efficiency 
C) conduction 
D) convection 
E) entropy
F)evaporation
G)heat
H)heat engine
I)heat mover
J)humidity
K)internal energy
L)radiation
M)saturation density
N)temperature

Question 13

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-A 1 kg block of ice is removed from a freezer where its temperature was -10°C.The amount of heat absorbed by the ice as it warms to 0°C is 20,000 J.

Accepted Answer

A) True 
 B)False

Question 14

One "food calorie" equals

Accepted Answer

A) 1 calorie. 
B) 100 calories. 
C) 1000 calories. 
D) none of the above.

Question 15

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is __________.

Accepted Answer

The answer of The Eiffel tower in Paris is made...

Question 16

In a steam engine,steam at 140°C in a turbine does work on an external system,and the steam leaves the turbine at 100°C.The efficiency of the steam engine is 5%.The relevant physical principle is the first law of thermodynamics.

Accepted Answer

A) True 
 B)False

Question 17

On a winter day the temperature is 5 degrees Celsius and the humidity is 0.003 kilograms per cubic meter.
(a)What is the relative humidity?
(b)The air is brought into a building and heated to 20 degrees Celsius without
changing the humidity.What is the relative humidity inside the building?

Accepted Answer

The answer of On a winter day the temperature is...

Question 18

You feel warm from the Sun at the beach because of heat radiation.

Accepted Answer

A) True 
 B)False

Question 19

The total kinetic and potential energies of all the atoms and molecules of a substance is its

Accepted Answer

A) heat. 
B) internal energy. 
C) temperature. 
D) thermodynamics. 
E) none of the above

Question 20

A refrigerator is an example of a heat mover.

Accepted Answer

A) True 
 B)False

Exam 5: Temperature and Heat

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−6/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -After the 1 kg block of ice melts,the amount of heat required to raise its temperature to 10 °C is

When you add heat to ice,its temperature always stays constant.

In a steam engine,steam at 140°C in a turbine does work on an external system,and the steam leaves the turbine at 100°C.The efficiency of the steam engine is 5%.The relevant physical principle is the __________ law of thermodynamics.

In a gas of different types of molecules all at the same temperature,the speeds of the heavier molecules will generally be _____________ the speeds of the lighter molecules.

Which of these is stated properly?

When water boils,its temperature

Heat is transferred from a substance if it is exposed to something that has a lower temperature.

Match each item with the correct statement below. -At temperatures below their boiling point,liquids gradually go into the gas phase through a process called

What's wrong with the statement "heat rises?"

A bimetallic strip is formed from two materials that have different __________.

Match each item with the correct statement below. -the density of water vapor in the air

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -A 1 kg block of ice is removed from a freezer where its temperature was -10°C.The amount of heat absorbed by the ice as it warms to 0°C is 20,000 J.

One "food calorie" equals

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−6/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is __________.

In a steam engine,steam at 140°C in a turbine does work on an external system,and the steam leaves the turbine at 100°C.The efficiency of the steam engine is 5%.The relevant physical principle is the first law of thermodynamics.

On a winter day the temperature is 5 degrees Celsius and the humidity is 0.003 kilograms per cubic meter. (a)What is the relative humidity? (b)The air is brought into a building and heated to 20 degrees Celsius without changing the humidity.What is the relative humidity inside the building?

You feel warm from the Sun at the beach because of heat radiation.

The total kinetic and potential energies of all the atoms and molecules of a substance is its

A refrigerator is an example of a heat mover.

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is __________.