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Wave travelling along string is described by, y(x, t) = 0.005 sinl(80.0x - 3.0t) , Amplitude=?, wavelength = ?, Period = ? , Frequency=? Displacement y at x= 30 cm and time t=20 seconds.​

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Answer:

In a wave equation,

y= A sin ( wt ± Kx)

GIVEN,

y(x, t) = 0.005 sinl(80.0x - 3.0t)

Amplitude= 0.005 m

wavelength = 2π/k

= 2π/80

= π/40

time period = 2π/w

=2π/3

Frequency= 3/2π

Displacement y(30,20) = 0.005 sin(80.30 -3.20)

=0.005 sin(2400-60)

=0.005 sin(2340)

=0.005 ×0 [sin2340 = sin(6.5 ×360) =0]

=0

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