Solve the all parts of given problem:
Problem: An incident x-ray photon is scattered from a free electron that is initially at rest. The photon is scattered straight back at an angle of 180o from its initial direction. The wavelength of the scattered photon is 8.50x10-2 nm.
Part I: What is the wavelength of the incident photon?
in m
Part II: What is the magnitude of the momentum of the electron after the collision?
in kg.m/s
Part III: What is the kinetic energy of the electron after the collision?
Please use great detail in explaining the solution. Thanks.