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An X-ray photon scatters from a free electron at rest at an angle of 110° relative...

An X-ray photon scatters from a free electron at rest at an angle of 110° relative to the incident direction.
(a) If the scattered photon has a wavelength of 0.270 nm, what is the wavelength of the incident photon?
(b) Determine the energy of the incident and scattered photons.
c) Find the kinetic energy of the recoil electron.

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