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What are similarities and differences of reflection, refraction, diffraction and absorption?
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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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Which statement best explains why the overall charge on an atom is zero?
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In what dirrection does a projectile acclerate...
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