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Physics, 21.06.2019 13:30
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m2 . 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 09:30
1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.
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Physics, 22.06.2019 17:00
If you put a helium-filled balloon in the refrigerator, what will happen?
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7. what is the difference between heat and thermal energy?...
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