3. The intensity of an electromagnetic wave is 2.85 kW/m2. The wave strikes perpendicular to a flat, 312 m2 surface that reflects 23% of its intensity and absorbs the rest. a) Find the magnitude of the force that the wave exerts on this surface. b) Find the magnitude of the electric field for this wave.

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3. The intensity of an electromagnetic wave is 2.85 kW/m2. The wave strikes perpendicular
to a flat, 312 m2 surface that reflects 23% of its intensity and absorbs the rest.
a) Find the magnitude of the force that the wave exerts on this surface.
b) Find the magnitude of the electric field for this wave.
Transcribed Image Text:3. The intensity of an electromagnetic wave is 2.85 kW/m2. The wave strikes perpendicular to a flat, 312 m2 surface that reflects 23% of its intensity and absorbs the rest. a) Find the magnitude of the force that the wave exerts on this surface. b) Find the magnitude of the electric field for this wave.
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