waves

Related Questions

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• The equation of progressive wave is $y=a\sin (200\,t-x)$. where $x$ is in meter and $t$ is in second. The velocity of wave is

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• A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in the tissue is close to

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