Equation 16.3, y 5 A sin (2pft 2 2px/l), gives the
Chapter , Problem 57(choose chapter or problem)
Equation 16.3, y 5 A sin (2pft 2 2px/l), gives the mathematical representation of a wave oscillating in the y direction and traveling in the positive x direction. Let y in this equation equal the electric fi eld of an electromagnetic wave traveling in a vacuum. The maximum electric fi eld is A 5 156 N/C, and the frequency is f 5 1.50 3 108 Hz. Plot a graph of * * the electric fi eld strength versus position, using for x the following values: 0, 0.50, 1.00, 1.50, and 2.00 m. Plot this graph for (a) a time t 5 0 s and (b) a time t that is one-fourth of the waves period.
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