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1- a copper wire has a diameternbsp dcu 00470 cm is 300 m long and has a density of charge carriers of 850 x1028
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1 a 15-nc point charge is placed at one corner of a square 15 m on a side and a -30-nc charge is placed on the corner
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question 1a show that the spectrum of thermal radiation for t300k peaks at approximately 10 micronsb at what frequency