A photon with an initial wavelength of 1390atilde-10-11 m, Ask an Expert

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A photon with an initial wavelength of 1.390Ã-10-11 m Compton scatters from an electron which is initially at rest. The photon scatters at an angle of 180 ° (straight back), and the wavelength of the scattered photon is 1.876Ã-10-11 m.

What is the kinetic energy of the scattered electron?

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