Niagara Falls is about 50 m high. a. What is the temperature rise in kelvins of the water from just before it goes over the cliff to just after it hits the rocks at the bottom of the falls, assuming negligible air resistance during the fall and that the water doesn't rebound but just splats onto a rock? It is helpful (but not essential) to consider a 1 g drop of water. b. In the Niagara Falls hydroelectric generating plant, the energy of falling water is converted into electricity. Assuming that the energy conversion is highly efficient, approximately how much energy is obtained from one kilogram of falling water? Approximately how many kilograms of water must go through the generators every second to produce a megawatt of power (1 x 106 W)?

Niagara Falls is about 50 m high. a. What is the temperature rise in kelvins of the water from just before it goes over the cliff to just after it hits the rocks at the bottom of the falls, assuming negligible air resistance during the fall and that the water doesn't rebound but just splats onto a rock? It is helpful (but not essential) to consider a 1 g drop of water. b. In the Niagara Falls hydroelectric generating plant, the energy of falling water is converted into electricity. Assuming that the energy conversion is highly efficient, approximately how much energy is obtained from one kilogram of falling water? Approximately how many kilograms of water must go through the generators every second to produce a megawatt of power (1 x 106 W)?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

9. Niagara Falls is about 50 m high.
a. What is the temperature rise in kelvins of the water from just before it goes over the cliff to
just after it hits the rocks at the bottom of the falls, assuming negligible air resistance
during the fall and that the water doesn't rebound but just splats onto a rock? It is helpful
(but not essential) to consider a 1 g drop of water.
b. In the Niagara Falls hydroelectric generating plant, the energy of falling water is converted
into electricity. Assuming that the energy conversion is highly efficient, approximately how
much energy is obtained from one kilogram of falling water? Approximately how many
kilograms of water must go through the generators every second to produce a megawatt
of power (1 x 106 W)?

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