A The photoelectric effect. yello light of
577.0.nm wavelength is incident on a Cesium
Surface. it is found that no photo electron flow
in the Circuit when the Cathode- anode voltage
drop blow 0.250v. find the
i)frequency of the incident Photon
ii) Initial energy of the electron
i maximum Kinetic energy of the photoelectron

An observer that stands still as the electron moves by him, will observe

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?