What is an Electromagnetic Wave? Video Lessons

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Problem: The plot below depicts the electric field component of a linearly polarized, electromagnetic plane wave traveling through vacuum. E(r,t) propagates in the negative  z-direction and toward an observer located at z = 0. (Note that x is directed into the page.) If the observer begins moving in the positive z-direction, the speed of propagation of the wave willa) increase.b) decrease.c) stay the same.

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Problem Details

The plot below depicts the electric field component of a linearly polarized, electromagnetic plane wave traveling through vacuum. E(r,t) propagates in the negative  z-direction and toward an observer located at z = 0. (Note that x is directed into the page.) If the observer begins moving in the positive z-direction, the speed of propagation of the wave will

a) increase.

b) decrease.

c) stay the same.

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