Physics, 26.10.2019 05:43 imichaelc1oy5t8i
In 2006, the united states produced kilowatt-hours (kwh) of electrical energy from 4138 hydroelectric plants (1.00 kwh = j). on average, each plant is 90% efficient at converting mechanical energy to electrical energy, and the average dam height is 50.0 m. as water flows through the hydroelectric plant apparatus, it maintains constant speed all the way to the bottom. a) what was the average power output per hydroelectric plant, for the year of 2006? b) what was the volume of water that flowed over each dam during 2006? (the density of water is 1000 .)
Answers: 2
Physics, 22.06.2019 08:00
What is a carrier wave and how does it affect what you hear on the radio
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Physics, 22.06.2019 14:40
An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.
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Physics, 22.06.2019 15:00
Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive
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Physics, 23.06.2019 01:00
Suppose that two objects attract each other with a gravitational force of 16 units. if the distance between the two objects is double, what is the new force of attraction between the two objects?
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In 2006, the united states produced kilowatt-hours (kwh) of electrical energy from 4138 hydroelectri...
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