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
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In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 11:30
(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
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Ascientific blank must be testable and capable of being proven false?
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Physics, 22.06.2019 20:30
Ahockey player of mass 82 kg is traveling north with a velocity of 4.1 meters per second he collides with the 76 kg player traveling east at 3.4 meters per second if the two players locked together momentarily in what direction will they be going immediately after the collision how fast will they be moving
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In 2006, the united states produced kilowatt-hours (kwh) of electrical energy from 4138 hydroelectri...
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