A4-kg cat is resting on a bookshelf that is 2 m high. what is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s^2?
a. 6 j
b. 8 j
c. 20 j
d. 78 j

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

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

Which wave is the result of amplification and produces a louder sound