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sensie

Black-body spectrum ?

The approximate mean photon energy of a black-body spectrum which is emitted by an object at a temperature of 10^5 K is ? eV . (answer to one significant figure) ALSO The wavelength at which this...
16:50 Sat 18th Apr 20091 answer, last by vascop 19:49 Sat 18th Apr 2009
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sensie

electrically charged particles query

If the distance between two electrically charged particles is doubled, what happens to the electric force bewteen them?
12:37 Sat 18th Apr 20091 answer, last by beso 13:38 Sat 18th Apr 2009

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