Should I apply for the Trusted Helpers Program? I want a real answer, if you don’t understand it don’t answer.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Which of the following list the divisions of the geologic time scale in order from longest to shortest

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?