Welcome to our website. Here is a review of Pump Water.
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Pump WaterHomeImprovement
Pump Water
Frequently Asked Questions ...
A windmill generates 140 watts of power continuously for 3 hours. This energy is used to pump water from a pond t?
A windmill generates 140 watts of power continuously for 3 hours. This energy is used to pump water from a pond with a water tank 50 m above the ground. If the pump efficiency is 80%, how much water would be in liters were lifted at the end of 3 hours?
Answer:
First even 140 watts is not * energy * It is power. But we need the energy generated by the windmill charge. Ie: 140 watts * time, the multiplication is 3 hours, was 10.8 thousand seconds for a total of 140 * 10 800 = 1.512 Megajoules come from 80% to the power of the pump: 1.21 MJ is The first of The second half of the problem Half: Water has a mass of 1 kg / liter of Work = force * distance (basic formula - remember it) Force = mass * acceleration (basic formula - learn by heart), so ... Work = Mass * Acceleration * distance (work = crazy - easy to remember) The mass = 1 kg (per liter), the acceleration of gravity is at = 9.8 m / s ² The distance M = 50 generates all the power done by the pump, 1.21 to be equal all the work = MJ (x) kg * 9.8 m / s ² * x 50m = 2470 kg = 2470 liters.
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