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Ber [7]
3 years ago
6

To navigate, a porpoise emits a sound wave that has a wavelength of 4.9 cm. The speed at which the wave travels in seawater is 1

522 m/s. Find the period of the wave.
Physics
1 answer:
bekas [8.4K]3 years ago
5 0

Frequency can be defined as the ratio between the speed of the wave and its wavelength, that is

f= \frac{v}{\lambda}

At the same time, the frequency is the inverse of the Period so

T = \frac{1}{f}

If we join the two expressions we will have to

T = \frac{\lambda}{v}

Replacing we have that

T = \frac{4.9*10^{-2}}{1522}

T = 3.219*10^{-5} s

Therefore the period of the wave is 3.219*10^{-5} s

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