# Physics

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Ultrasound with a frequency of 4.275 MHz can be used to produce images of the human body. If the speed of sound in the body is the same(1.79 km/s) as in salt water, what is the wavelength in the body?

• Physics -

T = 1/4.275 = 0.2339 Microseconds = 2.339*10^-7 seconds.

L = V*T = 1.79km/s * 2.339*10^-7s = 4.187*10^-7 km = 4.187*10^-4 m.

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