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Luba_88 [7]
2 years ago
13

PLEASE HELP! ILL GIVE BRAINLY!!

Physics
2 answers:
JulijaS [17]2 years ago
7 0
B


Because instead of expending energy into the atmosphere we are gaining it ultimately causing earths temperature to increase
LUCKY_DIMON [66]2 years ago
3 0

Answer:

B

Explanation:

if it is ganing more energy than it is giving off (which of cource it isint or we whould be baken) then it whould heat up        

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At left A red ball in a box with arrows pointing away from the ball in all directions. In the middle, a blue ball in a box with
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What could be used as another word for electrical potential
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at certain times the demand for electric energy is low and electric energy is used to pump water to a reservoir 45 m above the g
Readme [11.4K]

The mass of water that must be raised is 5.25\cdot 10^7 kg

Explanation:

Since the process is 70% efficiency, the power in output to the turbine can be written as

P_{out} = 0.70 P_{in}

where P_{in} is the power in input.

The power in input can be written as

P_{in} = \frac{W}{t}

where

W is the work done in lifting the water

t = 3 h = 10,800 s is the time elapsed

The work done in lifting the water is given by

W=mgh

where

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Combining the three equations together, we get:

P_{out} = 0.70 \frac{mgh}{t}

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And solving for m, we find:

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Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

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