Physical Science B Semester Exam

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Question
The first part shows a man producing a sound with a wavelength of 2.0 m and a frequency of 165 hertz. The speed calculated using the formula, wave speed = frequency times wavelength, is 330 meters per second = 165 hertz times 2.0 m. The second part shows a woman producing a sound with a wavelength of 0.2 m and a frequency of 1650 hertz. The speed calculated using the formula, wave speed = frequency times wavelength, is 330 meters per second = 1650 hertz times 0.2 m.

Which statement regarding sound traveling in air is correct?

(1 point)
Responses

A wave with a shorter wavelength is always faster than one with a longer wavelength.
A wave with a shorter wavelength is always faster than one with a longer wavelength.

The frequency of a sound does not affect the speed at which it travels.
The frequency of a sound does not affect the speed at which it travels.

A loud sound travels faster than a quiet sound.
A loud sound travels faster than a quiet sound.

As the wavelength increases, the frequency also increases.

1 answer

The correct statement regarding sound traveling in air is:

The frequency of a sound does not affect the speed at which it travels.

This is because, in a given medium (like air), the speed of sound is primarily determined by the properties of the medium, such as temperature and pressure, rather than the frequency or wavelength of the sound. The speed of sound is constant for a particular medium under specific conditions.