Exam 14: Heat

A 2000 kg car is traveling at 15.0 m/s down a long mountain grade of 2.0%.The mountain road is 5.0 km long.The heat generated at the brakes due to friction heats up the brakes.The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg $^{\circ}$ C.What is the increase in the temperature of the brakes?

(Multiple Choice)

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Question 21

A 2000 kg car is traveling at 20.0 m/s down a long mountain grade of 1.00%.The mountain road is 3.00 km long.The heat generated at the brakes due to friction heats up the brakes.The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg $^{\circ}$ C.What is the increase in the temperature of the brakes?

(Multiple Choice)

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Question 22

The heat of vaporization of water at 100.0 $^{\circ}$ C is 2,256 kJ/kg.What is the heat of vaporization of water in cal/gm?

(Multiple Choice)

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Question 23

A 100 gram glass container contains 200 grams of water and 50.0 grams of ice all at 0 $^{\circ}$ C.A 200 gram piece of lead at 100 $^{\circ}$ C is added to the water and ice in the container.What is the final temperature of the system? (specific heat of ice = 2,000 J/kg $^{\circ}$ C ,specific heat of water = 4,186 J/kg $^{\circ}$ C,heat of fusion of water = 333.7 kJ/kg,specific heat of glass = 837.2 J/km $^{\circ}$ C,specific heat of lead = 127.7 J/km $^{\circ}$ C)

(Multiple Choice)

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Question 24

A 1500 W portable heater is needed to replace the heat lost through a circular window (radius 25 cm)in the wall of a home that is made of a single pane of glass 0.30 cm thick.Thermal conductivity for the glass is 0.63 W/mK.The temperature inside the house is 20 $^{\circ}$ C and outside is -12 $^{\circ}$ C.What is the thickness of the window?

(Multiple Choice)

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Question 25

A 100 gram glass container contains 250 grams of water at 15.0 $^{\circ}$ C.A 200 gram piece of lead at 100 $^{\circ}$ C is added to the water in the container.What is the final temperature of the system? (specific heat of water = 4,186 J/kg $^{\circ}$ C,specific heat of glass = 837.2 J/km $^{\circ}$ C,specific heat of lead = 127.7 J/km $^{\circ}$ C)

(Multiple Choice)

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Question 26

The solar energy coming to the earth by radiation is 1,340 W/m² when the temperature of the Sun is 5800 K.If the temperature of the Sun decreased by 10.0%,then what would be the amount of solar radiation coming to the earth?

(Multiple Choice)

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Question 27

The specific of ice is 2.10 kJ/kg $^{\circ}$ C,the heat of fusion for ice at 0 $^{\circ}$ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg $^{\circ}$ C, and the heat of vaporization of water at 100 $^{\circ}$ C is 2,256 kJ/kg.What is the final equilibrium temperature when 5.00 grams of ice at -15.0 $^{\circ}$ C is mixed with 40.0 grams of water at 75.0 $^{\circ}$ C?

(Multiple Choice)

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Question 28

What is the heat needed to heat 150 g of water from 10.0 $^{\circ}$ C to 100 $^{\circ}$ C? (specific heat of water = 4186 J/kg $^{\circ}$ C)

(Multiple Choice)

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Question 29

A 100 g glass container contains 250 g of water at 15.0 $^{\circ}$ C.A 100 g piece of unknown material at 100 $^{\circ}$ C is added to the water in the container.The final temperature of the mixture is 19.0 $^{\circ}$ C.What is the specific heat of the unknown material in J/kg $^{\circ}$ C? (specific heat of water = 4186 J/kg $^{\circ}$ C, specific heat of glass = 837.2 J/kg $^{\circ}$ C)

(Multiple Choice)

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Question 30

200 Joules of heat flows into a 35 g sample.If the temperature increases by 10 $^{\circ}$ C,then what is the heat capacity of the sample,in J/ $^{\circ}$ C?

(Multiple Choice)

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Question 31

What type of heat transfer is used to carry heat from the house furnace to the living room of most houses?

(Multiple Choice)

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Question 32

An exerciser of mass 90.0 kg walks up a flight of stairs that are 12.0 meter high.What is the energy of the exercise in Calories?

(Multiple Choice)

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Question 33

The molar specific heat of a diatomic ideal gas at constant volume is Cv = 5/2 R.What is the heat needed to heat 28.00 g of air from 20.00 $^{\circ}$ C to 85.00 $^{\circ}$ C?

(Multiple Choice)

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Question 34

What is the heat needed to heat 16.0 grams of helium gas at constant volume from 20.0 $^{\circ}$ C to 85.0 $^{\circ}$ C?

(Multiple Choice)

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Question 35

The heat of fusion for lead at 327.0 $^{\circ}$ C is 22.9 kJ/kg and the specific heat of lead is 0.130 kJ/kg $^{\circ}$ C.What is the energy needed to melt 100 grams of lead starting at 0 $^{\circ}$ C?

(Multiple Choice)

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Question 36

An exerciser lifts 10.00 N weights a vertical distance of 50.00 cm.How many times would the exerciser have to lift the weight to use 10.00 Calories of energy?

(Multiple Choice)

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Question 37

The specific heat of ice is 2.100 kJ/kg $^{\circ}$ C,the heat of fusion for ice at 0 $^{\circ}$ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg $^{\circ}$ C,and the heat of vaporization of water at 100.0 $^{\circ}$ C is 2,256 kJ/kg.What is the final equilibrium temperature when 10.00 grams of ice at -15 $^{\circ}$ C is mixed with 3.000 grams of steam at 100 $^{\circ}$ C?

(Multiple Choice)

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Question 38

A 2000 kg car is traveling at 20.0 m/s and then puts on the brakes and comes to a complete stop.The heat generated at the brakes due to stopping heats up the brakes.The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg $^{\circ}$ C.What is the increase in the temperature of the brakes?

(Multiple Choice)

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(80)

Question 39

The specific heat of ice is 2.10 kJ/kg $^{\circ}$ C,the heat of fusion for ice at 0 $^{\circ}$ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg $^{\circ}$ C,and the heat of vaporization of water at 100 $^{\circ}$ C is 2256 kJ/kg.What is the final equilibrium temperature when 20.0 grams of ice at 15.0 $^{\circ}$ C is mixed with 5.00 grams of steam at 100 $^{\circ}$ C?

(Multiple Choice)

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(69)

Question 40

Showing 21 - 40 of 87

The heat of vaporization of water at 100.0 $^{\circ}$ C is 2,256 kJ/kg.What is the heat of vaporization of water in cal/gm?

The solar energy coming to the earth by radiation is 1,340 W/m² when the temperature of the Sun is 5800 K.If the temperature of the Sun decreased by 10.0%,then what would be the amount of solar radiation coming to the earth?

What is the heat needed to heat 150 g of water from 10.0 $^{\circ}$ C to 100 $^{\circ}$ C? (specific heat of water = 4186 J/kg $^{\circ}$ C)

200 Joules of heat flows into a 35 g sample.If the temperature increases by 10 $^{\circ}$ C,then what is the heat capacity of the sample,in J/ $^{\circ}$ C?

What type of heat transfer is used to carry heat from the house furnace to the living room of most houses?

An exerciser of mass 90.0 kg walks up a flight of stairs that are 12.0 meter high.What is the energy of the exercise in Calories?

The molar specific heat of a diatomic ideal gas at constant volume is Cv = 5/2 R.What is the heat needed to heat 28.00 g of air from 20.00 $^{\circ}$ C to 85.00 $^{\circ}$ C?

What is the heat needed to heat 16.0 grams of helium gas at constant volume from 20.0 $^{\circ}$ C to 85.0 $^{\circ}$ C?

The heat of fusion for lead at 327.0 $^{\circ}$ C is 22.9 kJ/kg and the specific heat of lead is 0.130 kJ/kg $^{\circ}$ C.What is the energy needed to melt 100 grams of lead starting at 0 $^{\circ}$ C?

An exerciser lifts 10.00 N weights a vertical distance of 50.00 cm.How many times would the exerciser have to lift the weight to use 10.00 Calories of energy?

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

The heat of vaporization of water at 100.0 ∘^{\circ}∘ C is 2,256 kJ/kg.What is the heat of vaporization of water in cal/gm?

The solar energy coming to the earth by radiation is 1,340 W/m2 when the temperature of the Sun is 5800 K.If the temperature of the Sun decreased by 10.0%,then what would be the amount of solar radiation coming to the earth?

What is the heat needed to heat 150 g of water from 10.0 ∘^{\circ}∘ C to 100 ∘^{\circ}∘ C? (specific heat of water = 4186 J/kg ∘^{\circ}∘ C)

200 Joules of heat flows into a 35 g sample.If the temperature increases by 10 ∘^{\circ}∘ C,then what is the heat capacity of the sample,in J/ ∘^{\circ}∘ C?

What type of heat transfer is used to carry heat from the house furnace to the living room of most houses?

An exerciser of mass 90.0 kg walks up a flight of stairs that are 12.0 meter high.What is the energy of the exercise in Calories?

The molar specific heat of a diatomic ideal gas at constant volume is Cv = 5/2 R.What is the heat needed to heat 28.00 g of air from 20.00 ∘^{\circ}∘ C to 85.00 ∘^{\circ}∘ C?

What is the heat needed to heat 16.0 grams of helium gas at constant volume from 20.0 ∘^{\circ}∘ C to 85.0 ∘^{\circ}∘ C?

The heat of fusion for lead at 327.0 ∘^{\circ}∘ C is 22.9 kJ/kg and the specific heat of lead is 0.130 kJ/kg ∘^{\circ}∘ C.What is the energy needed to melt 100 grams of lead starting at 0 ∘^{\circ}∘ C?

An exerciser lifts 10.00 N weights a vertical distance of 50.00 cm.How many times would the exerciser have to lift the weight to use 10.00 Calories of energy?

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

The heat of vaporization of water at 100.0 $^{\circ}$ C is 2,256 kJ/kg.What is the heat of vaporization of water in cal/gm?

The solar energy coming to the earth by radiation is 1,340 W/m² when the temperature of the Sun is 5800 K.If the temperature of the Sun decreased by 10.0%,then what would be the amount of solar radiation coming to the earth?

What is the heat needed to heat 150 g of water from 10.0 $^{\circ}$ C to 100 $^{\circ}$ C? (specific heat of water = 4186 J/kg $^{\circ}$ C)

200 Joules of heat flows into a 35 g sample.If the temperature increases by 10 $^{\circ}$ C,then what is the heat capacity of the sample,in J/ $^{\circ}$ C?

The molar specific heat of a diatomic ideal gas at constant volume is Cv = 5/2 R.What is the heat needed to heat 28.00 g of air from 20.00 $^{\circ}$ C to 85.00 $^{\circ}$ C?

What is the heat needed to heat 16.0 grams of helium gas at constant volume from 20.0 $^{\circ}$ C to 85.0 $^{\circ}$ C?

The heat of fusion for lead at 327.0 $^{\circ}$ C is 22.9 kJ/kg and the specific heat of lead is 0.130 kJ/kg $^{\circ}$ C.What is the energy needed to melt 100 grams of lead starting at 0 $^{\circ}$ C?