The benefits of leading a healthy lifestyle include 1. physical

2. mental

3. social

4. academic

5. all of the above

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Why does lightning travel from clouds to the ground?

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?