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If the height of Niagra fall is 50 m, the difference between the temperature of water at the top and the bottom of the fall is: (Assuming no loss in energy in other means)

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0.117 C^o

117 C⁰

11.7 C^o

1.17 C^o

answer is D.

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Detailed Solution

Assuming the gravitational potential energy gets completely converted into heat energy, $ms ∆ θ = mgh \Rightarrow ∆ θ = \frac{gh}{s} = \frac{(9.81) (50)}{(4184)} \approx 0.117 C^{o}$

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