mastering physics reading quiz ch 18 (the micro/macro connection)

Reading Quiz Ch 18 (The Micro/Macro Connection)

Reading Question 18.07

Part A

A large –20∘C ice cube is dropped into a super-insulated container holding a small amount of 5∘C water,

then the container is sealed. Ten minutes later, the temperature of the ice (and any water that has melted

from the ice) will be warmer than –20∘C. This is a consequence of

The first law of thermodynamics.

Both the first and the second laws.

Joule's law.

The second law of thermodynamics.

The third law of thermodynamics.

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Reading Question 18.01

Part A

What is the name of the quantity represented as vrms?

Random-measured-step viscosity

Root-mean-squared speed

Relative-mean-system velocity

Radial-maser-system volume

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Reading Question 18.06 Part A

A mass on a spring oscillates back and forth on a frictionless surface. How many degrees of freedom

does this system have?

6.

1.

4.

2.

3.

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It can hold energy as kinetic energy or potential energy.

Reading Question 18.05 Part A

A rigid container holds both hydrogen gas (H2) and nitrogen gas (N2) at 100∘C. Which statement

describes their rms speeds?

vrms of H2 > vrms of N2.

vrms of H2 = vrmsof N2.

vrms of H2 < vrms of N2.

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Reading Question 18.04

Part A

In general, which of the following statements is true?

Both microscopic and macroscopic processes are reversible.

Both microscopic and macroscopic processes are irreversible.

Microscopic processes are reversible and macroscopic processes are irreversible.

Microscopic processes are irreversible and macroscopic processes are reversible.

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Incorrect; correct answer displayed

Reading Question 18.03

Part A

Consider the following statements:

A. The entropy of an isolated system never decreases.

B. Heat never flows spontaneously from cold to hot.

C. The total thermal energy of an isolated system is constant.

Which of these express the second law of thermodynamics?

A only

B only

C only

Both A and B

Both B and C

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Reading Question 18.02

Part A

What additional kind of energy makes CV larger for a diatomic gas than for a monatomic one?

Charismatic

energy

Translational

energy

Heat energy

Rotational energy

Solar energy

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