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Jojoahmed99
27.08.2020 •
Chemistry
Water flows over Niagara Falls at the average rate of 2,400,000 kg/s, and the average height of the falls is about 50 m. Knowing that the gravitational potential energy of falling water per second = mass (kg) × height (m) × gravity (9.8 m/s2), what is the power of Niagara Falls? How many 15 W LED light bulbs could it power?
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Ответ:
Explanation:
It is given that,
Water flows over Niagara Falls at the average rate of 2,400,000 kg/s
The average height of the falls is 50 m
We need to find the power of Niagara Falls.
The gravitational potential energy of falling water is given by :
P = mgh
Power is rate of doing work i.e.
We have, m/t = 2,400,000 kg/s
So,
If the number of bulbs are n that could power 15 W LED, the,
Ответ: