An engine has an actual efficiency of 0.150. if you put 5200 j of heat into the engine, how much heat will be rejected into the air?

4420J

Explanation:

1) 0.15=useful energy / 5200

2) useful energy = 0.15 × 5200 = 780

3) wasted energy = total energy - useful = 5200 - 780 = 4420J

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible