Scott attached an old-school video camera to his drown and dropped of the top of his high-rise apartment building. The drone and camera together have a mass
of 13kg (too heavy). The drone has a lifting force of 50.N. As the heavy camera
and drone fell out of the sky, it developed an air resistance force of 28N.
Calculate the magnitude of the net force on the drone/camera object as it fell.

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states