Which of these best describes what is happening at Locations 1 & 2? ​​​​​​​Magma is rising up, cooling, and becoming new oceanic crust. ​​​​​​​Magma is being destroyed. ​​​​​​​Oceanic crust is being subducted and destroyed. ​​​​​​​Underwater mountain ranges are sinking back into the lithosphere as the plate separate.

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?