# principles of physics

posted by .

Calculate the change in potential energy of 7.8 million kg of water dropping 50 m over Niagara Falls.

• principles of physics -

m*g*h = 7.8*10^6 * 9.8 * 50 Joules

• principles of physics -

6777

## Similar Questions

1. ### physics

Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second?
2. ### physics

Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second?
3. ### physics

Water flows over Victoria Falls, which is 128 m high, at a rate of 1.4 x 106 kg/s. If half the potential energy of this water were converted into electric energy, how much electric power would be produced by these falls?
4. ### Physics

"Water flows over a section of Niagara Falls at the rate of 1.2*10^6 kg/s and falls 50.0m. How much power is generated by the falling water?
5. ### physics

Water drops over 49 m high Niagara Falls at the rate of 6.0 106 kg/s. If all the energy of the falling water could be harnessed by a hydroelectric power plant, what would be the plant's power output?
6. ### PHYS HELP

Water ﬂows over a section of Niagara Falls at a rate of 1.43 × 10^6 kg/s and falls 62.5 m. The acceleration of gravity is 9.8 m/s^2. How much power is generated by the falling water?
7. ### Physics

Water flows over a section of Niagara Falls at a rate of 1.2×106 kg/ s and falls 50m. How many 60W bulbs can be lit with this power?
8. ### physics

water flow over a falls 12.5m high. If the potential energy of the water is all converted to thermal energy calculate the temperature difference between the water at the top and buttom of the falls.
9. ### Physics

A certain mass of water at the top of Niagara Falls has a temperature of +10.0 degrees Celsius. It falls a distance of 50m. Assuming that all its potential energy is converted into thermal energy, calculate the temperature of the mass …
10. ### Physics

Water flows over a section of Niagara Falls at the rate of 1.3 × 106 kg/s and falls 49.8 m. How much power is generated by the falling water?

More Similar Questions

Post a New Question