Find the frequency of a wave of wavelength 2.5m and speed 400 m/s

The frequency of wave is 160Hz.

Explanation:

Given that the formula of speed is V = f×λ where V represents speed, f is frequency and λ is wavelength.

So first thing, you have to make frequency the subject by dividing wavelength on both sides :

Next you have to substitute the value of v and f into the formula :

Let λ = 2.5m,

Let v = 400m/s,

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hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )