Moving a ball up a hill O A. increases its chemical energy
OB. decreases its chemical energy
O C. increases its potential energy
OD. decreases its potential energy

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Astep up transformer has 250 turns on its primary and 500 turns on it secondary. when the primary is connected to a 200 v and the secondary is connected to a floodlight that draws 5a, what is the power output? show all of your work.