Niagra Falls Q

  • #1
101
0

Homework Statement


Estimate E generated by water falling over Niagara falls in 5 day.
Height = 150m
Water flow =104m3/sec
t=5x24x60x60=4320000sec


Homework Equations


P=W/t
mgh=mv2/2


The Attempt at a Solution


Work=mgh=m(9.8)(150)
Time=432000seconds
P=m(1470)/4320000

I just don't know how to convert 104m3/sec into a mass
 

Answers and Replies

  • #2
31
0
The density of water is ~1000kgm[tex]^{-3}[/tex].

You can use this to work out the mass flowing per second.
 
  • #3
101
0
Alright niceee thanks for the help :)
 
  • #4
31
0
No problemo :)
 

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