The height of Niagra falls is 50 m. Calculate the difference in temperature of water at the top and at the bottom of fall, if `J = 4.2 J cal^(-1)`.

The height of Niagra falls is 50 m. Calculate the difference in temper

1.	The height of Niagra falls is 50 m. Calculate the difference in temperature of water at the top and at the bottom of fall, if `J = 4.2 J cal^(-1)`.
Answer» P.E. is converted into heat, mgh=`JmSDeltat` `Deltat=(gh)/(JS)=(980xx5000)(4.2xx10^(7))=0.117^(@)C`.

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The height of Niagra falls is 50 m. Calculate the difference in temperature of water at the top and at the bottom of fall, if `J = 4.2 J cal^(-1)`.

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