Two stationary point charges 13.00 2.00 nd are separated by a distance of 50.0 cm. an is released from rest at a a electron point charges and moves along the line connecting the two charges. what is the speed of the electron when it midway between the two is 10.0 cm from the 3.00 nc charge?

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?