Calculate the maximum speed of a emitted electron, where the maximum kinetic energy of the emitted electron is 2.28*10,^-19j.

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

Astate of matter all that has define volume and can flow is a(n)

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v