Boris pushes a 5 lb. box 6 feet in 2 seconds. He has . done 50 ft-lbs. of work
a power output of 30 ft-lbs./sec
a power output of 15 ft-lbs./sec
not done work

the answer is c.)

explanation:

0.55x745.7j and a calculator

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.