Describe the motion of point 3 as the wave passes going to

the right.

Ans. Up-down-up,etc.

Black hole Close-up of central region near black hole

Side ASide B

The picture on the right is a close-up of the central region in the picture on the

left. Based on the frequency shift, which side is rotating away from Earth?

Ans. B

A bat sends an ultrasonic wave that bounces off of a frog and returns 0.006

s later. If the speed of sound is 330 m/s, how far is the frog from the bat?

Ans. 0.99 m

What is one wavelength?

0.25 m

Ans. 0.5 m

A sonic measuring device registers a distance of 3.45 m

between the device and the

wall. If the speed of sound in the

room is 340 m/s, how long did the round trip of the

signal take?

Ans. 0.02 s

The speed of sound is fastest in

•Solids

•Liquids

•Gases

Ans. solids

In an experiment, a tube is pulled out of water as a 550 Hz tuning fork rings over the open end. A resonance is heard. The tube is then pulled out a

distance of 0.30 m and the next resonance is heard. What is

the speed of sound in the tube? Ans. 330 m/s

In what direction is the truck moving?

Ans. right

Which side of the tornado is moving toward the radar unit?

Ans. A

Noise-cancellation headphones work by

__________ interference

Ans. destructive

Tuning fork A and B are the same

frequency. A small piece of putty is added to fork B.

What will happen to the frequency of tuning fork B?

A

B

Ans. decrease

The top two frequencies are played

and produce the beat

frequency shown in

red. What is the

difference in the top two frequencies

?1 s 2 s

Ans. 1 Hz

What harmonic is shown?

Ans. 3rd

It takes 10 seconds for 5 complete waves to pass a

point. What is the frequency?

Ans. 0.5 Hz

A light wave is shown below traveling to the right. The electric field part of the wave vibrates up-and-down. What type of wave is

a light wave?

Ans. transverse

Is the wave pulse produced in “Domino toppling” transverse,

longitudinal, or both?

Ans. both

Describe the motion of point 3 after the wave reflects from

the wall and moves toward the left.

Ans. Down-up-down, etc.

What harmonic is shown?

Ans. 1st

When looking at the light from a distant star, the light is shifted as the star moves in the circular path due to the gravity of the small unseen planet. Does the

star rotate clockwise or counterclockwise in the diagram below?

Ans. Counter-clockwise

If the speed of light is 3 x 108 m/s, how long does it take

light to travel from the Earth to the

Moon?

The distance between the Earth and the Moon is about

3 x 108 m.

Ans. 1 s

The hollow crest of the dinosaur acts as a pipe with both ends open. If the total

length of the chamber is 1.5 m and the creature produces a

standing wave in its 3rd harmonic, what is the frequency of sound

produced? Use vsound = 340 m/s Ans. 340 Hz

How does the wavelength of the reflected sound wave measuring

blood speed compare to the incident

sound wave?Ans. longer

What harmonic is shown?Ans. 2nd

Eight waves pass a point every 3 seconds. The

distance between crests is 2 m. What is the frequency of

the wave?

Ans. 8/3 Hz

Eight waves pass a point every 3 seconds. The

distance between crests is 2 m. What is the speed of the

wave?

Ans. 5.33 m/s

It takes 10 seconds for 5 complete waves to pass a point. What is the period?

Ans. 2 s

A 550 Hz tuning fork rings along with another fork (A) of unknown frequency. A beat with a frequency of 5 Hz is

heard. A third fork of frequency 540 Hz produces a beat frequency of 15 Hz when

ringing with A. What is the frequency of tuning fork A?

Ans. 555 Hz

The xylophone rings at its lowest frequency. What is the wavelength

at this lowest frequency?

20 cm Connecting

pointsAns. 80 cm

Waves on the Sun caused by the eruption of a solar flare. It traveled 1.3 x 107 m in one hour.

What was the speed of the wave (m/s)?

Ans. 3611 m/s

What is the ?

5 m

Ans. 5 m

What are the 3 properties of the image formed?

Ans. Real, inverted, larger

What are the 3 properties of the image formed?

Ans. Real, inverted, same size

What are the three properties of the image formed?

Ans. Real, inverted, smaller

What are the 3 properties of the image formed?

Ans. Virtual, upright, larger