Physics, 06.08.2019 03:20 Sydney012618
The energy flow per unit time per unit area (s) of an electromagnetic wave has an average value of 695 mw/m^2. the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. the total energy that traverses the area in a time interval of one minute is closest to:
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....(I)
....(II)
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The energy flow per unit time per unit area (s) of an electromagnetic wave has an average value of 6...
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