A laser with a power output of 2.10 mW at a wavelength of 425 nm is projected onto calcium metal.
(a) Given the binding energy is 2.28 eV, how many electrons per second are ejected?
(b) At what rate is kinetic energy carried away by the electrons?
What is the accelerating voltage of an x-ray tube that produces x rays with a shortest wavelength of 0.0117 nm?
How many photons per second are emitted by the antenna of a microwave oven, if its power output is 1.20 kW at a frequency of 2535 MHz?