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In Vacuum, the Components of an EM Wave Are E_y

Question 16

Multiple Choice

In vacuum, the components of an EM wave are E_y = (50 V/m) cos [(5.00 m⁻¹) x + ωt], E_x = 0, and E_z = 0. In what direction is this wave moving?

A) positive x-direction
B) negative x-direction
C) positive y-direction
D) negative y-direction
E) positive or negative z-direction

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