The correct response is: wavelength of the stationary source: 11.25 ft; perceived wavelength: 12.25 ft.
To find the wavelength of the stationary source, we use the formula wavelength = speed of sound / frequency:
wavelength = 1125 ft/s / 100 Hz = 11.25 ft
To find the perceived wavelength by a person in the car, we use the formula: perceived wavelength = (speed of sound - speed of listener) / frequency:
perceived wavelength = (1125 ft/s - 100 ft/s) / 100 Hz = 12.25 ft.
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: 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: 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: 10.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 10.25 ft
wavelength of the stationary source: 10.25 ft; perceived wavelength: 11.25 ftA 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?
wavelength of the stationary source: 11.25 ft; perceived wavelength: 12.25 ft
wavelength of the stationary source: 12.25 ft; perceived wavelength: 11.25 ft
wavelength of the stationary source: 11.25 ft; perceived wavelength: 10.25 ft
wavelength of the stationary source: 10.25 ft; perceived wavelength: 11.25 ft
1 answer
1 answer