What is the velocity of an object with a kinetic energy of 800 j and a mass of 12 kg?

What are the factors that affect the resistance of a wire?

Who was the first scientist to measure speed as distance over time?

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?