An electrons (mass = 5 x 10-25) has an initial speed of 2x106 m/s. It collides with a random-atom and emits a photon of wavelength 565 nm.  What is the electron's speed after collison, assuming the random-atom remains at rest after the collision.

nd on A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of 8-130.0° with respect to the incident X-rays, as shown in the drawing. The scattered X-rays have a momentum whose magnitude is 1.861 x 1024 kg-m/s. Determine the wavelength (in nm) of the incident X-rays. (For accuracy, use h = 6.626 x 1034 J-s, c -2.998 x 10 m/s, and m= 9.109 x 1031 kg for the mass of an electron.) Number i 33237 m Photon scattering from stationary electron Units nm H Search POD

Light with wavelength ? = 635 nm is incident on a metallic surface. Electrons are ejected from the surface. The maximum speed of these electrons is v = 4.40 ✕ 105 m/s. a) What is the work function of the metal (in eV)? b) What is the cutoff frequency for this metal (in Hz)?

A photon of wavelength 0.90638 nm strikes a free electron that is initially at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision? V = i ! m/s