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a)Find the wavelength, wave number, and the period.
b)Draw graphs of the waves at t = T/4 and at t = T/2.
c)Draw a graph if the wavelength is halved. What happens to the wave number in that case?
d)Draw a graph is the frequency is halved but speed is unchanged.
e)Draw a graph if the phase constant is increased by p radians.

I am mostly concerned with a,b, and especially e, but help with any of them would be appreciated.

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