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C.A proton has a speed of 0.1c. Find the speed of an electron that has the same momentum as the proton.

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vivent I vp=o.lc, mp=1.67X 10 2 3 me =9.11X15 31 kg Sol.) as given, Pp = Per mp up = m 7 1.67 1.67X10 27xo.1c = - 0.12 Ji-ver

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