Question 1

In order to operate, a heat engine must have

Accepted Answer

A) either a hot or a cold reservoir. 
B) both a hot and a cold reservoir. 
C) a boiler. 
D) a supply of fuel that can be burned, such as coal or oil. 
A) either a hot or a cold reservoir. 
B) both a hot and a cold reservoir. 
C) a boiler. 
D) a supply of fuel that can be burned, such as coal or oil. B

Question 2

A thermometer calibrated in the Celsius scale and a thermometer calibrated in the Fahrenheit scale are used to measure the same temperature.The numerical reading on the Fahrenheit thermometer

Accepted Answer

A) is proportional to that on the Celsius thermometer. 
B) is smaller than that on the Celsius thermometer. 
C) is larger than that on the Celsius thermometer. 
D) may be smaller or larger than that on the Celsius thermometer. 
A) is proportional to that on the Celsius thermometer. 
B) is smaller than that on the Celsius thermometer. 
C) is larger than that on the Celsius thermometer. 
D) may be smaller or larger than that on the Celsius thermometer. D

Question 3

The entropy of a system is a measure of its

Accepted Answer

A) temperature. 
B) heat content. 
C) density. 
D) disorder. 
A) temperature. 
B) heat content. 
C) density. 
D) disorder. D

Question 4

A barometer measures

Accepted Answer

A) atmospheric density. 
B) atmospheric pressure. 
C) water density. 
D) water pressure. 
A) atmospheric density. 
B) atmospheric pressure. 
C) water density. 
D) water pressure.

Question 5

Heat transfer by conduction occurs

Accepted Answer

A) only in liquids. 
B) only in solids. 
C) only in liquids and solids. 
D) in liquids, solids, and gases. 
A) only in liquids. 
B) only in solids. 
C) only in liquids and solids. 
D) in liquids, solids, and gases.

Question 6

The specific heat of water is 4.2 kJ/kg$\circ$C.How long will it take for a 2-kW heating element to raise the temperature of 30 kg of water from 20$\circ$C to 80$\circ$C?

Accepted Answer

A) 6.3 min 
B) 15 min 
C) 63 min 
D) 84 min 
A) 6.3 min 
B) 15 min 
C) 63 min 
D) 84 min

Question 7

One liter of hydrogen gas at atmospheric pressure is allowed to expand to a volume of 3 liters with the temperature held constant.If the average speed of the hydrogen molecules was originally v, their new average speed is

Accepted Answer

A) v/9. 
B) v/3. 
C) v. 
D) 3 v. 
A) v/9. 
B) v/3. 
C) v. 
D) 3 v.

Question 8

An absolute temperature of 100 K is the same as a Celsius temperature of

Accepted Answer

A) -173$\circ$C. 
B) 32$\circ$C. 
C) 212$\circ$C. 
D) 373$\circ$C. 
A) -173$\circ$C. 
B) 32$\circ$C. 
C) 212$\circ$C. 
D) 373$\circ$C.

Question 9

At which of the following Celsius temperatures will a Fahrenheit thermometer show the same reading in degrees?

Accepted Answer

A) -40$\circ$C 
B) 0$\circ$C 
C) 32$\circ$C 
D) 40$\circ$C 
A) -40$\circ$C 
B) 0$\circ$C 
C) 32$\circ$C 
D) 40$\circ$C

Question 10

The density of brass is 8 *103 kg/m3.The volume occupied by 320 g of brass is

Accepted Answer

A) 0.038 cm3. 
B) 3.2 cm3. 
C) 38 cm3. 
D) 380 cm3. 
A) 0.038 cm3. 
B) 3.2 cm3. 
C) 38 cm3. 
D) 380 cm3.

Question 11

If it is to be 40 percent efficient, a heat engine that exhausts heat at 350 K must absorb heat at a minimum temperature of

Accepted Answer

A) 210 K. 
B) 583 K. 
C) 875 K. 
D) 1038 K. 
A) 210 K. 
B) 583 K. 
C) 875 K. 
D) 1038 K.

Question 12

The specific heat of ice is 2.1 kJ/kg$\circ$C.When 50 kJ of heat is removed from 2 kg of ice initially at -5$\circ$C, the final temperature of the ice is

Accepted Answer

A) -6$\circ$C. 
B) -11$\circ$C. 
C) -12$\circ$C. 
D) -17$\circ$C. 
A) -6$\circ$C. 
B) -11$\circ$C. 
C) -12$\circ$C. 
D) -17$\circ$C.

Question 13

Ethanol boils at 172$\circ$F.The Celsius equivalent of this temperature is

Accepted Answer

A) 64$\circ$C. 
B) 78$\circ$C. 
C) 140$\circ$C. 
D) 278$\circ$C. 
A) 64$\circ$C. 
B) 78$\circ$C. 
C) 140$\circ$C. 
D) 278$\circ$C.

Question 14

The density of air is 1.3 kg/m3.The air in a room 5 m long, 4 m wide, and 2.5 m high has a mass of

Accepted Answer

A) 0.26 kg. 
B) 6.5 kg. 
C) 38 kg. 
D) 65 kg. 
A) 0.26 kg. 
B) 6.5 kg. 
C) 38 kg. 
D) 65 kg.

Question 15

Sublimation refers to

Accepted Answer

A) the vaporization of a solid without first becoming a liquid. 
B) the melting of a solid. 
C) the vaporization of a liquid. 
D) the condensation of a gas into a liquid. 
A) the vaporization of a solid without first becoming a liquid. 
B) the melting of a solid. 
C) the vaporization of a liquid. 
D) the condensation of a gas into a liquid.

Question 16

A cake of soap is placed in a bathtub sink.The buoyant force on the soap is

Accepted Answer

A) 0. 
B) less than its weight. 
C) equal to its weight. 
D) more than its weight. 
A) 0. 
B) less than its weight. 
C) equal to its weight. 
D) more than its weight.

Question 17

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.It can exert three different pressures on a horizontal surface, depending on which face it rests on.The highest pressure is

Accepted Answer

A) 0.7 kPa. 
B) 2.2 kPa. 
C) 13.1 kPa. 
D) 21.8 kPa. 
A) 0.7 kPa. 
B) 2.2 kPa. 
C) 13.1 kPa. 
D) 21.8 kPa.

Question 18

In order to double the average energy of the molecules in a gas at 200 K, its temperature must be changed to

Accepted Answer

A) 100 K. 
B) 400 K. 
C) 800 K. 
D) 1600 K. 
A) 100 K. 
B) 400 K. 
C) 800 K. 
D) 1600 K.

Question 19

Which of the following formulas relating temperatures on the Celsius and Fahrenheit scales is correct?

Accepted Answer

A) Tc = (5/9)(TF - 32$\circ$) 
B) Tc = (5/9)(TF + 32$\circ$) 
C) Tc = (9/5)(TF - 32$\circ$) 
D) Tc = (9/5)(TF + 32$\circ$) 
A) Tc = (5/9)(TF - 32$\circ$) 
B) Tc = (5/9)(TF + 32$\circ$) 
C) Tc = (9/5)(TF - 32$\circ$) 
D) Tc = (9/5)(TF + 32$\circ$)

Question 20

The properties of several different materials are being compared.If the samples all have the same volume, the one with the greatest mass also has the greatest

Accepted Answer

A) density. 
B) buoyancy. 
C) pressure. 
D) temperature. 
A) density. 
B) buoyancy. 
C) pressure. 
D) temperature.

In order to operate, a heat engine must have

A thermometer calibrated in the Celsius scale and a thermometer calibrated in the Fahrenheit scale are used to measure the same temperature.The numerical reading on the Fahrenheit thermometer

The entropy of a system is a measure of its

A barometer measures

Heat transfer by conduction occurs

The specific heat of water is 4.2 kJ/kg^$\circ$C.How long will it take for a 2-kW heating element to raise the temperature of 30 kg of water from 20^$\circ$C to 80^$\circ$C?

One liter of hydrogen gas at atmospheric pressure is allowed to expand to a volume of 3 liters with the temperature held constant.If the average speed of the hydrogen molecules was originally v, their new average speed is

An absolute temperature of 100 K is the same as a Celsius temperature of

At which of the following Celsius temperatures will a Fahrenheit thermometer show the same reading in degrees?

The density of brass is 8 *10³ kg/m³.The volume occupied by 320 g of brass is

If it is to be 40 percent efficient, a heat engine that exhausts heat at 350 K must absorb heat at a minimum temperature of

The specific heat of ice is 2.1 kJ/kg^$\circ$C.When 50 kJ of heat is removed from 2 kg of ice initially at -5^$\circ$C, the final temperature of the ice is

Ethanol boils at 172^$\circ$F.The Celsius equivalent of this temperature is

The density of air is 1.3 kg/m³.The air in a room 5 m long, 4 m wide, and 2.5 m high has a mass of

Sublimation refers to

A cake of soap is placed in a bathtub sink.The buoyant force on the soap is

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.It can exert three different pressures on a horizontal surface, depending on which face it rests on.The highest pressure is

In order to double the average energy of the molecules in a gas at 200 K, its temperature must be changed to

Which of the following formulas relating temperatures on the Celsius and Fahrenheit scales is correct?

The properties of several different materials are being compared.If the samples all have the same volume, the one with the greatest mass also has the greatest

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Exam 5: Matter and Heat

In order to operate, a heat engine must have

A thermometer calibrated in the Celsius scale and a thermometer calibrated in the Fahrenheit scale are used to measure the same temperature.The numerical reading on the Fahrenheit thermometer

The entropy of a system is a measure of its

A barometer measures

Heat transfer by conduction occurs

The specific heat of water is 4.2 kJ/kg ∘\circ∘ C.How long will it take for a 2-kW heating element to raise the temperature of 30 kg of water from 20 ∘\circ∘ C to 80 ∘\circ∘ C?

One liter of hydrogen gas at atmospheric pressure is allowed to expand to a volume of 3 liters with the temperature held constant.If the average speed of the hydrogen molecules was originally v, their new average speed is

An absolute temperature of 100 K is the same as a Celsius temperature of

At which of the following Celsius temperatures will a Fahrenheit thermometer show the same reading in degrees?

The density of brass is 8 *103 kg/m3.The volume occupied by 320 g of brass is

If it is to be 40 percent efficient, a heat engine that exhausts heat at 350 K must absorb heat at a minimum temperature of

The specific heat of ice is 2.1 kJ/kg ∘\circ∘ C.When 50 kJ of heat is removed from 2 kg of ice initially at -5 ∘\circ∘ C, the final temperature of the ice is

Ethanol boils at 172 ∘\circ∘ F.The Celsius equivalent of this temperature is

The density of air is 1.3 kg/m3.The air in a room 5 m long, 4 m wide, and 2.5 m high has a mass of

Sublimation refers to

A cake of soap is placed in a bathtub sink.The buoyant force on the soap is

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.It can exert three different pressures on a horizontal surface, depending on which face it rests on.The highest pressure is

In order to double the average energy of the molecules in a gas at 200 K, its temperature must be changed to

Which of the following formulas relating temperatures on the Celsius and Fahrenheit scales is correct?

The properties of several different materials are being compared.If the samples all have the same volume, the one with the greatest mass also has the greatest

The Scientific Method

Motion

Energy

Energy and the Future

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe

Filters

The specific heat of water is 4.2 kJ/kg^$\circ$C.How long will it take for a 2-kW heating element to raise the temperature of 30 kg of water from 20^$\circ$C to 80^$\circ$C?

The density of brass is 8 *10³ kg/m³.The volume occupied by 320 g of brass is

The specific heat of ice is 2.1 kJ/kg^$\circ$C.When 50 kJ of heat is removed from 2 kg of ice initially at -5^$\circ$C, the final temperature of the ice is

Ethanol boils at 172^$\circ$F.The Celsius equivalent of this temperature is

The density of air is 1.3 kg/m³.The air in a room 5 m long, 4 m wide, and 2.5 m high has a mass of