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The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
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Physics, 22.06.2019 15:00
What happens when a rubber rod is rubbed with a piece of fur?
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a tall column of water is open to the atmosphere. at a depth of 10.3 m below the surface, the water...
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