Instantaneous 37961

A plane wave has an amplitude u0 = 40 cm and a frequency f = 10 Hz. The speed of wave propagation through the medium is v = 40 cm. S-1. At a distance x = 10 cm from the starting point, the wave has an instantaneous deflection u = 15 cm. How long does it take for the wave to travel this path?

Correct answer:

t =  0.35 s

Step-by-step explanation:

u0=40 cm m=40:100  m=0.4 m f=10 Hz v=0.40 m/s  ω=2π f=2 3.1416 1062.8319 1/rad s=10 cm m=10:100  m=0.1 m  λ=v/f=0.4/10=251=0.04 m s0=s+λ=0.1+0.04=507=0.14 m  t=s0/v=0.14/0.4=0.35 s



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