A sinusoidal electromagnetic wave propagates in the +x direction through empty space. Its electric field is described by E = (9.71E4 V/m) × sin ((2.06E11 rad/s) t – (687 rad/m) x ) . What is the average intensity of this electromagnetic wave (in W/m2)?

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A sinusoidal electromagnetic wave propagates in the +x direction through empty space. Its electric field is described by

E = (9.71E4 V/m) × sin ((2.06E11 rad/s) t – (687 rad/m) x ) .

What is the average intensity of this electromagnetic wave (in W/m2)?

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