A waterfall is 1.260m high. Calculate the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall. (Neglect heat losses to the surroundings, take g as 10m-2 and specific heat capacity of water as 4200Jkg-1K-1)
-
A.
0.3oC -
B.
3.0oC -
C.
33.3oC -
D.
42.0oC -
E.
100.0oC
Correct Answer: Option B
Explanation
(Delta t = frac{gh}{c} = frac{1260 times 10}{4200})
= 3.0o