Section 1: Vectors 1. A car drives due south for 50 km, and then drives due north 18 km. What is the car's displacement? (10 pts)

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

How does the entropy of steam compare to the entropy of ice?

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