Homework Answers
here,
y(x,t) = 3 sin(4x + 2t)
compairing with equation
y(x,t) = A * sin(kx + wt)
on compairing ,
K = 4 m^-1
w = 2 rad/s
the speed of wave , v = f * lamda
v = (w/2pi) * ( 2*pi /K)
v = (2/4) = 0.5 m/s
as there is +ve sign between kx and wt
the wave will move in -x direction
the correct option is (Wave propagates to the left with the speed 0.5 m/s)
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