An x-ray photon with a wavelength 0.1100 nm collides with a free electron initially at rest. the scattered photon has a wavelength of 0.1122 nm. (a) calculate the angle 0 between the initial and final directions of the photon. (b) what is the kinetic energy (in ev) and speed (in m/s) of the electron after the collision?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600