An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. Consider an x-ray scattered from the target at an angle of 180deg. Determine:
a) The change in wavelength of the scattered x-ray.
b) The change in photo energy between the incident and scattered x-ray.
c) The kinetic energy transferred to an electron.
d) the electron's direction of motion (assuming it was initially stationary).