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.