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Thank you so much! A photon has an energy EE and wavelength λλ before scattering from...

Thank you so much!

A photon has an energy EE and wavelength λλ before scattering from a free electron. After scattering through a 140 ∘∘ angle, the photon's wavelength has increased by 11.0%.

Find the initial wavelength of the photon. In pm.

Find the initial energy of the photon.In fj

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