Use the images to answer the question.

Question

The images show the pressure waves created by a passing sound source.

Which image corresponds to what moment in time?
(1 point)
Responses
The low-pitched sound corresponds to the sound source getting closer; its wavelength is shorter. The high-pitched sound corresponds to the sound source moving away; its wavelength is longer.
The low-pitched sound corresponds to the sound source getting closer; its wavelength is shorter. The high-pitched sound corresponds to the sound source moving away; its wavelength is longer.
The low-pitched sound corresponds to the sound source getting closer; its wavelength is longer. The high-pitched sound corresponds to the sound source moving away; its wavelength is shorter.
The low-pitched sound corresponds to the sound source getting closer; its wavelength is longer. The high-pitched sound corresponds to the sound source moving away; its wavelength is shorter.
The low-pitched sound corresponds to the sound source moving away; its wavelength is longer. The high-pitched sound corresponds to the sound source getting closer; its wavelength is shorter.
The low-pitched sound corresponds to the sound source moving away; its wavelength is longer. The high-pitched sound corresponds to the sound source getting closer; its wavelength is shorter.
The low-pitched sound corresponds to the sound source moving away; its wavelength is shorter. The high-pitched sound corresponds to the sound source getting closer; its wavelength is longer.
The low-pitched sound corresponds to the sound source moving away; its wavelength is shorter. The high-pitched sound corresponds to the sound source getting closer; its wavelength is longer.

Answer 1

The low-pitched sound corresponds to the sound source getting closer; its wavelength is shorter. The high-pitched sound corresponds to the sound source moving away; its wavelength is longer.

Answer 2

A stationary source produces a sound wave at a frequency of 100 Hz. The wave travels at 1125 feet per second. A car is moving toward the sound source at a speed of 100 feet per second.
What is the wavelength of the stationary sound source and the wavelength that a person in the car perceives?
(1 point)
Responses

wavelength of the stationary source: 10.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 10.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 12.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 12.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 12.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 12.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 10.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 10.25 ft

Answer 3

The wavelength of the stationary source is 11.25 ft and the perceived wavelength by a person in the car is 10.25 ft.

Therefore, the correct answer is:
wavelength of the stationary source: 11.25 ft; perceived wavelength: 10.25 ft

Answer 4

When a guitar string is plucked, what part of the standing wave is found at the fixed ends of the string?(1 point)
Responses
the harmonics
the harmonics
the antinodes
the antinodes
the nodes
the nodes
the resonance

Answer 5

the nodes