Homework Task: Find the power of water

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Homework Help Overview

The discussion revolves around calculating the power of water falling from a height of 20 meters, with a specified volume of 80 cubic meters falling per minute. Participants are exploring the relationships between mass, force, and power in this context.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants are attempting to determine the mass of the water based on its volume and are discussing the conversion of volume to mass. There are questions about the formulas needed to calculate power and the relationships between force, distance, and time.

Discussion Status

Some participants have provided insights into the mass calculation and the conversion from volume to mass, while others are exploring how to derive power from the given information. There is an ongoing exploration of the relationships between the various physical quantities involved.

Contextual Notes

Participants are working under the constraints of the problem statement, which specifies the height and volume of water but does not provide additional information about other factors that may influence the calculations.

besfort
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Homework Statement


Find the power of the water if it falls from the height (h= 20m), for every minute falls 80m^3 (Volume=80m3).


Homework Equations


P=A/t
W = mg
A = Fh
P= Fv


The Attempt at a Solution


I attempted to find the mass first, but I couldn't find any formula to do so.
 
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besfort said:

Homework Statement


Find the power of the water if it falls from the height (h= 20m), for every minute falls 80m^3 (Volume=80m3).


Homework Equations


P=A/t
W = mg
A = Fh
P= Fv


The Attempt at a Solution


I attempted to find the mass first, but I couldn't find any formula to do so.

1cc of water weighs 1 gram. So a liter of water weighs a kilogram. That should get you to the answer.
 
If 80m^3 = 80000l, then that means the mass is 80000kg, aye?
 
besfort said:
If 80m^3 = 80000l, then that means the mass is 80000kg, aye?

Right so you have 80,000 kg falling per minute. How much kg per second is that? Hence how much Newtons per second is that?

Remember that Power = Rate at which work is done = Force*distance/Time
 

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