If there were no gravity a stone thrown upward at 25 degrees above the horizontal would follow a straight-line path. But because of gravity, at the end of 4.5 seconds, the stone is actually ( g=10 m/s2 )

Question 6 options:

45 m below the straight line.

90 m below the straight line.

101.25 m below the straight line.

202.5 m below the straight line.

102.5 m below the straight line.

80.25 m below the straight line.

Not enough information.

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?