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?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?