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1)Calculate the speed of the waves having a crest-to-crest distance of 150 cm and the time...

1)Calculate the speed of the waves having a crest-to-crest distance of 150 cm and the time taken to complete one cycle is 5 ms.

2)Given the following sound wave equation:

s(x,t)= 150 sin(50x - 140t) dB

a) The amplitude of the wave.

b) the wave frequency and the periodic time

c) the wavelength

d) The time taken for the wave to reach the first   crest.

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