A brass cube,9 cm on a side,is raised in temperature by 226°C.The coefficient of volume expansion of brass is 57 × 10−6/C°.By what percentage is any one of the 9-cm edges increased in length?

A) 0.32% B) 3.85% C) 0.43% D) 1.73% E) 2.25% A) 0.32% B) 3.85% C) 0.43% D) 1.73% E) 2.25%

Exam 10: Thermal Physics

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A pressure of 3 × 10−⁷ mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 286 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and N_A = 6.02 × 10²³)

(Multiple Choice)

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Question 21

One way to heat a gas is to compress it.A gas at 2 atm at 31°C is compressed to two fifths of its original volume,and it reaches 36 atm pressure.What is its new temperature?

(Multiple Choice)

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Question 22

The observation that materials expand in size with an increase in temperature can be applied to what proportion of existing substances?

(Multiple Choice)

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Question 23

What is the temperature of a system in thermal equilibrium with another system made up of ice and water at one atmosphere of pressure?

(Multiple Choice)

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Question 24

What happens to a volume of water when its temperature is reduced from 8°C to 4°C?

(Multiple Choice)

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Question 25

How many moles of air must escape from a 12-m × 10-m × 3-m room when the temperature is raised from 5°C to 25°C? Assume the pressure remains unchanged at one atmosphere while the room is heated.

(Multiple Choice)

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Question 26

With volume and molar quantity held constant,by what factor does the absolute temperature change for an ideal gas when the pressure is five times bigger?

(Multiple Choice)

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Question 27

Which of the following properties can be used to measure temperature?

(Multiple Choice)

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Question 28

A room has a volume of 50 m³ and is filled with air of an average molecular mass of 29 u.What is the mass of the air in the room at a pressure of 1.0 atm and temperature of 25°C? R = 0.082 L⋅atm/mol⋅K

(Multiple Choice)

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Question 29

A substance is heated from 63°C to 78°C.What would the same incremental change be when registered in kelvins?

(Multiple Choice)

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Question 30

Suppose the pressure of 20 g of an ideal monatomic gas is tripled while its volume is halved.What happens to the internal energy of the gas?

(Multiple Choice)

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Question 31

A temperature change from 40°C to 55°C corresponds to what incremental change in °F?

(Multiple Choice)

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Question 32

Which best describes a system made up of ice,water and steam existing together?

(Multiple Choice)

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Question 33

Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 250 kg.The density of air is 1.29 kg/m³ and helium has a density of 0.178 kg/m³.

(Multiple Choice)

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Question 34

The absolute temperature of an ideal gas is directly proportional to which of the following properties,when taken as an average,of the molecules of that gas?

(Multiple Choice)

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Question 35

A helium-filled weather balloon has a 1.2 m radius at liftoff where air pressure is 2 atm and the temperature is 278 K.When airborne,the temperature is 227 K,and its radius expands to 2 m.What is the pressure at the airborne location?

(Multiple Choice)

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Question 36

Carbon dioxide forms into a solid (dry ice)at approximately −157°F.What temperature in degrees Celsius does this correspond to?

(Multiple Choice)

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Question 37

A brass cube,9 cm on a side,is raised in temperature by 226°C.The coefficient of volume expansion of brass is 57 × 10−⁶/C°.By what percentage is any one of the 9-cm edges increased in length?

(Multiple Choice)

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Question 38

An ideal gas is confined to a container with adjustable volume.The number of moles and temperature are constant.By what factor will the volume change if pressure triples?

(Multiple Choice)

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Question 39

An interval of one Celsius degree is equivalent to an interval of:

(Multiple Choice)

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Question 40

Showing 21 - 40 of 82

Exam 10: Thermal Physics

A pressure of 3 × 10−7 mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 286 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and NA = 6.02 × 1023)

One way to heat a gas is to compress it.A gas at 2 atm at 31°C is compressed to two fifths of its original volume,and it reaches 36 atm pressure.What is its new temperature?

The observation that materials expand in size with an increase in temperature can be applied to what proportion of existing substances?

What is the temperature of a system in thermal equilibrium with another system made up of ice and water at one atmosphere of pressure?

What happens to a volume of water when its temperature is reduced from 8°C to 4°C?

How many moles of air must escape from a 12-m × 10-m × 3-m room when the temperature is raised from 5°C to 25°C? Assume the pressure remains unchanged at one atmosphere while the room is heated.

With volume and molar quantity held constant,by what factor does the absolute temperature change for an ideal gas when the pressure is five times bigger?

Which of the following properties can be used to measure temperature?

A room has a volume of 50 m3 and is filled with air of an average molecular mass of 29 u.What is the mass of the air in the room at a pressure of 1.0 atm and temperature of 25°C? R = 0.082 L⋅atm/mol⋅K

A substance is heated from 63°C to 78°C.What would the same incremental change be when registered in kelvins?

Suppose the pressure of 20 g of an ideal monatomic gas is tripled while its volume is halved.What happens to the internal energy of the gas?

A temperature change from 40°C to 55°C corresponds to what incremental change in °F?

Which best describes a system made up of ice,water and steam existing together?

Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 250 kg.The density of air is 1.29 kg/m3 and helium has a density of 0.178 kg/m3.

The absolute temperature of an ideal gas is directly proportional to which of the following properties,when taken as an average,of the molecules of that gas?

A helium-filled weather balloon has a 1.2 m radius at liftoff where air pressure is 2 atm and the temperature is 278 K.When airborne,the temperature is 227 K,and its radius expands to 2 m.What is the pressure at the airborne location?

Carbon dioxide forms into a solid (dry ice)at approximately −157°F.What temperature in degrees Celsius does this correspond to?

A brass cube,9 cm on a side,is raised in temperature by 226°C.The coefficient of volume expansion of brass is 57 × 10−6/C°.By what percentage is any one of the 9-cm edges increased in length?

An ideal gas is confined to a container with adjustable volume.The number of moles and temperature are constant.By what factor will the volume change if pressure triples?

An interval of one Celsius degree is equivalent to an interval of:

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

A pressure of 3 × 10−⁷ mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 286 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and N_A = 6.02 × 10²³)

A room has a volume of 50 m³ and is filled with air of an average molecular mass of 29 u.What is the mass of the air in the room at a pressure of 1.0 atm and temperature of 25°C? R = 0.082 L⋅atm/mol⋅K

Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 250 kg.The density of air is 1.29 kg/m³ and helium has a density of 0.178 kg/m³.

A brass cube,9 cm on a side,is raised in temperature by 226°C.The coefficient of volume expansion of brass is 57 × 10−⁶/C°.By what percentage is any one of the 9-cm edges increased in length?