Answer:
the answer is 2000Nm
Explanation:
wprk done = force × distance moved
w.d = 200N × 10m
w.d = 2000Nm
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Answer:
3.24×10⁸ J, or 324 MJ
Explanation:
"kWh" is a kilowatt-hour. It's the energy used by 1 kilowatt of power after one hour.
A kilowatt is a kilojoule per second.
90 kWh
= 90 kW × 1 hr
= 90 kJ/s × 1 hr
= 90 kJ/s × 3600 s
= 324,000 kJ
= 324,000,000 J
The energy is 3.24×10⁸ J, or 324 megajoules.
Answer:
The Answer is D!
Explanation:
I checked it on Khan Academy.
Potential energy is first transformed into kinetic energy as she pedals, then gravitational as she coasts down the hill.
So if p=w/t
then 4400=(w)(200)
so you would multiply 4440•200 and get 880,000