A4-kg object falls vertically a distance of 5 m. its potential energy has changed by approximately how much? a. it has increased by 200 j. b. it has increased by 20 j. c. it has decreased by 20 j. d. it has decreased by 200 j.

There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?

How do you tell if someone actually cares about you? and just say they do?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples