Which of the following is found at a subduction zone? (2g, DOK 1) A.
a deep ocean trench

B.
a rift valley

C.
a mid-ocean ridge

D.
a canyon

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?