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Exam 5: Temperature and Heat

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Question 1

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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

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

F) B) and D)
G) B) and C)

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Question 2

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When water boils,its temperature increases.

A) True
B) False

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Question 3

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Two devices that make use of a bimetallic strip are a __________ and a __________.

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 __________ law of thermodynamics.

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 __________.

Heat transfer by radiation occurs via

Heat flows from

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

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

Match each item with the correct statement below. -this is how we receive heat from the Sun

Evaporation is when a gas is converted into a liquid.

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).

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 3,340,000 J.

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

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 __________.

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

Absolute zero is

Natural processes tend to increase the entropy of thermodynamic systems.

The first law of thermodynamics is basically a special version of the law of ______________.

A liquid cannot be heated simultaneously by conduction,convection,and radiation.