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A wave on a string has a frequency of $440 Hz$ and a wavelength of $1.3 m$ . How fast does the wave travel?

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570 m / s

550 m / s

520 m / s

540 m / s

answer is A.

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Detailed Solution

The wave speed is

570 m / s

Given,
Frequency

f = 440 Hz

Wavelength

λ = 1.3 m

To find the wave speed, we need to use the following formula:
Since we know the frequency and wavelength, we just plug the values into the equation and solve for

v .

Speed

v = fλ

= 440 \times 1.3

= 570 m / s

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