Exam 5: Temperature and Heat

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

A thermostat can work because of a bimetallic strip.

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

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

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.

The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change in length of the ordinary glass rod will be __________ times the change in length of the Pyrex glass rod.

When ice melts, its temperature

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 __________.

An aluminum wing on a plane is 38 m long when the temperature is 20 ^oC. At what temperature (in ^oC) would the wing be 0.04 m shorter? Enter your answer to one decimal place. You should think about the physics of the situation before trying to solve the problem. (Hint: You are being asked for a temperature, not a temperature change).

When droplets of condensation form on the outside of a glass of ice water, it must be that in the air right next to the glass

The change in size of an object due to thermal expansion depends upon

The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil away 1 kg of water is __________ the amount of heat required to melt 1 kg of ice.

At 96°F the saturation density of air is 0.04 kg/m ³. If the weather report says the relative humidity is 90% when the temperature is 96°F, the humidity is 0.036 kg/m³.

The temperature of a gas can be increased by

The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil 1 kg of water is __________ times the amount of heat required to melt 1 kg of ice.

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

A hot pizza contains __________.

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

An example of a heat mover is

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