Maria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero? a) 0 hours b) it was never zero. c) at 0 hours and 2 hours d) from .75 to 1.25 hours

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

Which best describes the difference between internal and thermal energy?

The molecular mass of a gas is (select all that apply) a. independent of the type of gas b. the same number as the atomic (or molecular) mass, but measured in grams c. dependent on the temperature d. the mass of a mole of the gas