Question 1

Consider an ideal gas at 1.0 atmosphere in a closed container. If the temperature changes from 300. K to 450. K, the final gauge pressure will be

Accepted Answer

A)  21. psi. 
B)  0.5 atm. 
C)  3.0 atm. 
D)  4.5 atm. 
E)  1.5 atm. 
A)  21. psi. 
B)  0.5 atm. 
C)  3.0 atm. 
D)  4.5 atm. 
E)  1.5 atm.

Question 2

At which of the following temperatures would we expect gas molecules to have half the energy that they have at 100.° C?

Accepted Answer

A)  -86.° C 
B)  93. K 
C)  323. K 
D)  -56.° C 
E)  50.° C 
A)  -86.° C 
B)  93. K 
C)  323. K 
D)  -56.° C 
E)  50.° C

Question 3

An ideal gas at STP is first compressed until its volume is half the initial volume, and then it is allowed to expand until its pressure is half the initial pressure. All of this is done while holding the temperature constant. If the initial internal energy of the gas is U, the final internal energy of the gas will be

Accepted Answer

A)  2U. 
B)  U. 
C)  U/2. 
D)  U/3. 
E)  U/4. 
A)  2U. 
B)  U. 
C)  U/2. 
D)  U/3. 
E)  U/4.

Question 4

In order to double the average speed of the molecules in a given sample of gas, the temperature (measured in Kelvins) must

Accepted Answer

A)  quadruple. 
B)  double. 
C)  reduce to one-fourth its original value. 
D)  triple. 
E)  reduce to one-half its original value. 
A)  quadruple. 
B)  double. 
C)  reduce to one-fourth its original value. 
D)  triple. 
E)  reduce to one-half its original value.

Question 5

What is the average separation between air molecules at STP?

Accepted Answer

The answer of What is the average separation between air...

Question 6

Which two temperature changes are equivalent?

Accepted Answer

A)  -40 C°, -40 F° 
B)  1 K, 1 F° 
C)  1 C°, 1 K 
D)  1 F°, 1 C° 
A)  -40 C°, -40 F° 
B)  1 K, 1 F° 
C)  1 C°, 1 K 
D)  1 F°, 1 C°

Question 7

A bolt hole in a brass plate has a diameter of 1.2 cm at 20.° C. What is the diameter of the hole when the plate is heated to 220.° C? (The coefficient of linear thermal expansion for brass is 19 × 10-6 per degree C.)

Accepted Answer

A)  1.200 cm 
B)  1.190 cm 
C)  1.210 cm 
D)  1.195 cm 
E)  1.205 cm 
A)  1.200 cm 
B)  1.190 cm 
C)  1.210 cm 
D)  1.195 cm 
E)  1.205 cm

Question 8

Internal energy has what units?

Accepted Answer

A)  1/C° 
B)  J/mol-K 
C)  J/K 
D)  molecules/mole 
E)  J 
A)  1/C° 
B)  J/mol-K 
C)  J/K 
D)  molecules/mole 
E)  J

Question 9

Aluminum has a positive coefficient of thermal expansion. Consider a round hole that has been drilled in a large sheet of aluminum. As the temperature increases and the surrounding metal expands, the hole diameter will

Accepted Answer

A)  depends how much metal surrounds the hole 
B)  decrease. 
C)  remain constant. 
D)  increase. 
A)  depends how much metal surrounds the hole 
B)  decrease. 
C)  remain constant. 
D)  increase.

Question 10

State the equipartition theorem.

Accepted Answer

On average, the total internal energy of

Question 11

At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21 × 10-21 J?

Accepted Answer

Question 12

The temperature of an ideal gas increases from 10° C to 300. K while remaining at constant pressure. What happens to the volume of the gas?

Accepted Answer

A)  It more than doubles. 
B)  It decreases slightly. 
C)  It increases by factor of 30. 
D)  It decreases to one-half its original volume. 
E)  It increases slightly. 
A)  It more than doubles. 
B)  It decreases slightly. 
C)  It increases by factor of 30. 
D)  It decreases to one-half its original volume. 
E)  It increases slightly.

Question 13

"Absolute Zero" is how many Fahrenheit degrees below freezing (water)?

Accepted Answer

491. F° be

Question 14

Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal expansion coefficient of the aluminum is 24. × 10-6 (C °)-1, and if the temperature of the rod increases by 1.0 C°, how high off the ground would the expanded ring be (assuming uniform space all around)?

Accepted Answer

Question 15

Gresham's Law says, at constant pressure and temperature, the diffusion rate for a gas molecule is

Accepted Answer

A)  inversely proportional to mass. 
B)  proportional to the square root of the mass. 
C)  inversely proportional to the square root of the mass. 
D)  proportional to mass. 
A)  inversely proportional to mass. 
B)  proportional to the square root of the mass. 
C)  inversely proportional to the square root of the mass. 
D)  proportional to mass.

Question 16

Boyle's law and Charles' law each respectively assume what is held constant?

Accepted Answer

A)  temperature, volume 
B)  volume, pressure 
C)  pressure, volume 
D)  temperature, pressure 
E)  volume, temperature 
A)  temperature, volume 
B)  volume, pressure 
C)  pressure, volume 
D)  temperature, pressure 
E)  volume, temperature

Question 17

If the pressure acting on an ideal gas at constant temperature is tripled, its volume is

Accepted Answer

A)  reduced to one-half. 
B)  reduced to one-third. 
C)  increased by a factor of two. 
D)  increased by a factor of three. 
A)  reduced to one-half. 
B)  reduced to one-third. 
C)  increased by a factor of two. 
D)  increased by a factor of three.

Question 18

Express your body temperature (98.6°)

Accepted Answer

A)  45.5° C 
B)  29.5° C 
C)  66.6° C 
D)  37.0° C 
E)  72.6° C 
F) in Celsius degrees. 
A)  45.5° C 
B)  29.5° C 
C)  66.6° C 
D)  37.0° C 
E)  72.6° C 
F) in Celsius degrees.

Question 19

Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in Kelvins must

Accepted Answer

A)  double. 
B)  remain unchanged. 
C)  reduce to one-half its original value. 
D)  reduce to one-fourth its original value. 
E)  quadruple. 
A)  double. 
B)  remain unchanged. 
C)  reduce to one-half its original value. 
D)  reduce to one-fourth its original value. 
E)  quadruple.

Question 20

By how much will a slab of concrete 18. m long contract when the temperature drops from 24.° C to -16.° C? (The coefficient of linear thermal expansion for concrete is 12 × 10-6 per degree C.)

Accepted Answer

A)  70. mm 
B)  1.5 cm 
C)  15. cm 
D)  0.5 cm 
E)  0.86 cm 
A)  70. mm 
B)  1.5 cm 
C)  15. cm 
D)  0.5 cm 
E)  0.86 cm

Exam 10: Temperature and Kinetic Theory

Consider an ideal gas at 1.0 atmosphere in a closed container. If the temperature changes from 300. K to 450. K, the final gauge pressure will be

At which of the following temperatures would we expect gas molecules to have half the energy that they have at 100.° C?

In order to double the average speed of the molecules in a given sample of gas, the temperature (measured in Kelvins) must

What is the average separation between air molecules at STP?

Which two temperature changes are equivalent?

A bolt hole in a brass plate has a diameter of 1.2 cm at 20.° C. What is the diameter of the hole when the plate is heated to 220.° C? (The coefficient of linear thermal expansion for brass is 19 × 10-6 per degree C.)

Internal energy has what units?

Aluminum has a positive coefficient of thermal expansion. Consider a round hole that has been drilled in a large sheet of aluminum. As the temperature increases and the surrounding metal expands, the hole diameter will

State the equipartition theorem.

At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21 × 10-21 J?

The temperature of an ideal gas increases from 10° C to 300. K while remaining at constant pressure. What happens to the volume of the gas?

"Absolute Zero" is how many Fahrenheit degrees below freezing (water)?

Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal expansion coefficient of the aluminum is 24. × 10-6 (C °)-1, and if the temperature of the rod increases by 1.0 C°, how high off the ground would the expanded ring be (assuming uniform space all around)?

Gresham's Law says, at constant pressure and temperature, the diffusion rate for a gas molecule is

Boyle's law and Charles' law each respectively assume what is held constant?

If the pressure acting on an ideal gas at constant temperature is tripled, its volume is

Express your body temperature (98.6°)

Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in Kelvins must

By how much will a slab of concrete 18. m long contract when the temperature drops from 24.° C to -16.° C? (The coefficient of linear thermal expansion for concrete is 12 × 10-6 per degree C.)

Measurement and Problem Solving

Kinematics: Description of Motion

Motion in Two Dimensions

Force and Motion

Work and Energy

Linear Momentum and Collisions

Circular Motion and Gravitation

Rotational Motion and Equilibrium

Solids and Fluids

Heat

Thermodynamics

Vibrations and Waves

Sound

Electric Charge, Forces, and Fields

Electric Potential, Energy, and Capacitance

Electric Current and Resistance

Basic Electric Circuits

Magnetism

Electromagnetic Induction and Waves

AC Circuits

Reflection and Refraction of Light

Mirrors and Lenses

Physical Optics: The Wave Nature of Light

Vision and Optical Instruments

Relativity

Quantum Physics

Quantum Mechanics and Atomic Physics

The Nucleus

Nuclear Reactions and Elementary Particles

Filters

A bolt hole in a brass plate has a diameter of 1.2 cm at 20.° C. What is the diameter of the hole when the plate is heated to 220.° C? (The coefficient of linear thermal expansion for brass is 19 × 10^-6 per degree C.)

At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21 × 10^-2¹ J?

Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal expansion coefficient of the aluminum is 24. × 10^-6 (C °)^-1, and if the temperature of the rod increases by 1.0 C°, how high off the ground would the expanded ring be (assuming uniform space all around)?

By how much will a slab of concrete 18. m long contract when the temperature drops from 24.° C to -16.° C? (The coefficient of linear thermal expansion for concrete is 12 × 10^-6 per degree C.)