Question 1

A harmonic oscillator is an oscillator

Accepted Answer

A)  which makes musical - like sound when it moves 
B)  with a restoring force proportional to its displacement from equilibrium. 
C)  with a restoring force proportional to its speed 
D)  which has constant kinetic energy when in motion 
A)  which makes musical - like sound when it moves 
B)  with a restoring force proportional to its displacement from equilibrium. 
C)  with a restoring force proportional to its speed 
D)  which has constant kinetic energy when in motion

Question 2

Water can support

Accepted Answer

A)  traveling waves only. 
B)  surface waves only. 
C)  standing waves only. 
D)  traveling and standing waves. 
A)  traveling waves only. 
B)  surface waves only. 
C)  standing waves only. 
D)  traveling and standing waves.

Question 3

In a famous television commercial a singer's voice is played on a speaker beside a nearby glass, which shatters when she hits a certain note in the song. Please explain.

Accepted Answer

First of all, this television commercial

Question 4

Suppose you become famous because you were able to develop a non - contact way of measuring tension in suspended wires. Your method would be based upon which physical insight below?

Accepted Answer

A)  The frequency of a vibrating string depends on the tension in the wire, and so a frequency measurement will determine tension. 
B)  The velocity of a wave depends on the height of the string above the ground, and so by measuring velocity we can get the wire's shape which will tell us how tense it is. 
C)  Greater tension causes lower pitches and so all we have to do is to measure the pitch of the vibrating wire to get he tension. 
D)  Tension depends upon the wire's temperature and so we just make a temperature measurement. 
A)  The frequency of a vibrating string depends on the tension in the wire, and so a frequency measurement will determine tension. 
B)  The velocity of a wave depends on the height of the string above the ground, and so by measuring velocity we can get the wire's shape which will tell us how tense it is. 
C)  Greater tension causes lower pitches and so all we have to do is to measure the pitch of the vibrating wire to get he tension. 
D)  Tension depends upon the wire's temperature and so we just make a temperature measurement.

Question 5

Water wave A has a larger wavelength than water wave B. Which wave travels faster?

Accepted Answer

A)  A 
B)  B 
C)  Both travel at the same speed. 
D)  Not enough information is given to determine. 
A)  A 
B)  B 
C)  Both travel at the same speed. 
D)  Not enough information is given to determine.

Question 6

You decide to take your younger brother to the park for a fun afternoon. You notice that one ride is basically a seat attached to an old car spring. When a person sits on it, the spring vibrates rapidly but when in a car the spring vibrates much more slowly. This is because

Accepted Answer

A)  Larger masses on a spring give lower frequencies. 
B)  Larger masses on a spring give shorter periods. 
C)  Larger masses on a spring give higher frequencies. 
D)  Larger masses on a spring give more kinetic energy loss. 
A)  Larger masses on a spring give lower frequencies. 
B)  Larger masses on a spring give shorter periods. 
C)  Larger masses on a spring give higher frequencies. 
D)  Larger masses on a spring give more kinetic energy loss.

Question 7

Water is about 800 times as dense as air and about 15,000 times as stiff. If sound in air travels at about 760 mph., what is the speed of sound under water?

Accepted Answer

A)  176.7 mph. 
B)  3268 mph. 
C)  760 mph. 
D)  800 mph. 
A)  176.7 mph. 
B)  3268 mph. 
C)  760 mph. 
D)  800 mph.

Question 8

One reason for using a quartz crystal as a clock's time-keeper is so that the clock will

Accepted Answer

A)  not need a battery. 
B)  keep accurate time even if the ambient temperature changes. 
C)  run forever. 
D)  have sliding parts that don't make noise. 
A)  not need a battery. 
B)  keep accurate time even if the ambient temperature changes. 
C)  run forever. 
D)  have sliding parts that don't make noise.

A harmonic oscillator is an oscillator

Water can support

In a famous television commercial a singer's voice is played on a speaker beside a nearby glass, which shatters when she hits a certain note in the song. Please explain.

Suppose you become famous because you were able to develop a non - contact way of measuring tension in suspended wires. Your method would be based upon which physical insight below?

Water wave A has a larger wavelength than water wave B. Which wave travels faster?

You decide to take your younger brother to the park for a fun afternoon. You notice that one ride is basically a seat attached to an old car spring. When a person sits on it, the spring vibrates rapidly but when in a car the spring vibrates much more slowly. This is because

Water is about 800 times as dense as air and about 15,000 times as stiff. If sound in air travels at about 760 mph., what is the speed of sound under water?

One reason for using a quartz crystal as a clock's time-keeper is so that the clock will

The Laws of Motion, Part 1

The Laws of Motion, Part 2

Mechanical Objects, Part 1

Mechanical Objects, Part 2

Fluids

Fluids and Motion

Heat and Phase Transitions

Thermodynamics

Electricity

Magnetism and Electrodynamics

Electromagnetic Waves

Light

Optics and Electronics

Modern Physics

Filters

Exam 9: Resonance and Mechanical Waves

A harmonic oscillator is an oscillator

Water can support

In a famous television commercial a singer's voice is played on a speaker beside a nearby glass, which shatters when she hits a certain note in the song. Please explain.

Suppose you become famous because you were able to develop a non - contact way of measuring tension in suspended wires. Your method would be based upon which physical insight below?

Water wave A has a larger wavelength than water wave B. Which wave travels faster?

You decide to take your younger brother to the park for a fun afternoon. You notice that one ride is basically a seat attached to an old car spring. When a person sits on it, the spring vibrates rapidly but when in a car the spring vibrates much more slowly. This is because

Water is about 800 times as dense as air and about 15,000 times as stiff. If sound in air travels at about 760 mph., what is the speed of sound under water?

One reason for using a quartz crystal as a clock's time-keeper is so that the clock will

The Laws of Motion, Part 1

The Laws of Motion, Part 2

Mechanical Objects, Part 1

Mechanical Objects, Part 2

Fluids

Fluids and Motion

Heat and Phase Transitions

Thermodynamics

Electricity

Magnetism and Electrodynamics

Electromagnetic Waves

Light

Optics and Electronics

Modern Physics

Filters