Physics

Problem

a. Calculate the phase difference between the points

x_1=0.25\,\text{m}

and

x_2=0.35\,\text{m}

at time

t=0

for a wave described by

y=0.03\sin(6\pi x-120\pi t+\pi/4)

, where

x

is in metres and

t

in seconds. b. Find the earliest positive time after

t=0

when the point at

x_1=0.25\,\text{m}

attains the same phase that the point at

x_2=0.35\,\text{m}

had at

t=0