Ablock of wood loses 160 j of gravitational potential energy as it slides down a ramp. if it has 90 j of kinetic energy at the bottom of the ramp we can conclude that

In science and physics what is the standard unit of measure for speed?

An object in mechanical equilibrium is an object

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