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22 October, 12:07

A photon of wavelength 0.99235 nm strikes a free electron that is initially at rest. the photon is scattered straight backward. what is the speed of the recoil electron after the collision?

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  1. 22 October, 12:47
    0
    F=uR

    where U is constant of friction and R=mg

    F = mgcos 36

    =2.05*10 *.8090

    =16.58 N
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