hi everyone,(adsbygoogle = window.adsbygoogle || []).push({});

i am stuck working on this problem and thought i'd post it to the forum

if an electric field wave is given by E = 50cos(10^8*t + k*z)

what does the wave look like at t=0, T/4, T/2 and T (T is period)

i know that w = 10^8 here and that k = w/2Pi

i'm killing myself trying to graph this wave at those points in time. please help!!

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# Homework Help: Need help with taveling wave sketching

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