Recent content by stawbeegirl

yes you're right. that's what i have written. k = 1/3 (w/c) to graph do i just plug in 2Pi/w (or multiple of) for t and 1/3 for k?

hi everyone, 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...