Answer:
1 kW
Explanation:
We assume the man's weight is measured in newtons. Then the power expended is ...
(800 N)(15 m)/(12 s) = (12000 N·m)/(12 s) = 1000 N·m/s = 1000 W
The man's average power output is 1 kilowatt.
Answer:
B, as height increases gravitational energy increases
Answer:
(B) depends solely on the ionization of water.
Explanation: hope this helps !
Answer:
The Moon has an atmosphere.
Explanation:
The Moon has an atmosphere, but it is very tenuous. Gases in the lunar atmosphere are easily lost to space. Because of the Moon's low gravity, light atoms such as helium receive enough energy from solar heating so that they escape in just a few hours.
