An electron initially 3.00 m from a nonconducting infinite sheet of uniformly distributed charge is fired toward the sheet. the electron has an initial speed of 420 m/s and travels along a line perpendicular to the sheet. when the electron has traveled 2.00 m, its velocity is instantaneously zero, and it then reverses its direction. what is the surface charge density on the sheet?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Most short-period comets do not have randomly oriented orbits because

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.