for every 120 joules of energy input a car waste 85 joules, find the useful energy output of the car?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?