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Exam 5: Temperature and Heat

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Question 31

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The specific heat capacity of a substance is the amount of energy required to raise 1 kg of the substance by a temperature of

A) 1°F.
B) 10 °C.
C) 10 °F.
D) 1°C.

E) All of the above
F) B) and D)

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Question 32

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Three examples of a heat mover are __________, __________, and __________.

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refrigerat...

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Question 33

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A wood stove in the corner of a cabin causes the entire cabin to become heated. This is an example of __________.

A piece of chocolate melts in your mouth. This is an example of

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 As the ice is melting, the temperature of the ice-water mixture rises by 10°C.

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

The temperature scale where the numerical value is proportional to the average kinetic energy of the atoms or molecules is

You can increase the temperature of a gas by compressing it.

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

The specific heat capacity of water is about twice the specific heat capacity of ice. The amount of heat required to boil 1 kg of water is twice the amount of heat required to melt 1 kg of ice.

You hold one end of a solid rod in a fire, and the other end becomes hot. This is an example of __________.

A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. This is governed by the second law of thermodynamics.

The warmth you feel from the Sun at the beach is an example of

A steam turbine is an example of a heat mover.

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 The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is 334,000 J.

When ice melts, its temperature increases.

As the air cools at night the relative humidity usually __________.

A bimetallic strip is usable in a thermometer because of its heat capacity.

Which mechanism(s) of heat transfer will work in a vacuum?