2. Explain why the flow of energy between air and sand is different than that between air and water as thermal energy is absorbed
from day to night.

Which term best describes the phrase “something that happens”?

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Two positive charges are equal. which has more electric potential energy?