1. Tardigrade
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  3. Physics
  4. A water fall is 84 m high. Assuming that half of the kinetic energy of the falling water is converted into heat, the rise in temperature of water is (assume g=10 ms -2 )

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Q. A water fall is $84\, m$ high. Assuming that half of the kinetic energy of the falling water is converted into heat, the rise in temperature of water is (assume $g=10 \, ms ^{-2}$ )

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Solution:

$\frac{ mgh }{2}= mc \Delta $
$\Delta =\frac{g h}{2 c}=\frac{10 \times 84}{2 \times 4.2 \times 10^{3}}=0.1$