Question

The height of a waterfall is $50m$. If $g=9.8{ms}^{-2}$ the difference between the temperature at the top and the bottom of the waterfall is

• A. $1.17$
• B. $2.17$
• C. $0.117$
• D. $1.43$

Answer 1

The correct option is C $0.117$

$\frac{mgh}{J}=ms\Delta t$
$\Rightarrow \Delta t=\frac{gh}{Js}=\frac{9.8\times 50}{4.2\times {10}^3\times 1}=0.117$