The mass of water that must be raised is 
Explanation:
Since the process is 70% efficiency, the power in output to the turbine can be written as

where
is the power in input.
The power in input can be written as

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

where
m is the mass of water
is the acceleration of gravity
h = 45 m is the height at which the water is lifted
Combining the three equations together, we get:

Where

And solving for m, we find:

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Answer: Hot spot
The volcanic hot spot is an area in the mantle from which heat rises as a thermal plume from deep in the Earth.
The answer is B.
More mass means more gravitational force.
Hope it helps!
Significant ear drainage or a scarred tympanic membrane can lead to inaccurate results on a tympanic temperature reading.
<h3>Why inaccurate tympanic temperature reading?</h3>
Significant ear drainage or a scarred tympanic membrane can lead to inaccurate results on a tympanic temperature reading.
Although an ear infection or the presence of an ear infection will not significantly affect a tympanic thermometer reading.
If the client has been sleeping on one side, take the temperature on the other side as heat may be increased on the side against the pillow.
Recent consumption of a cold beverage will not affect tympanic temperature.
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Answer:
Air slows down The fall of any object including a ball.