A waterfall is 630cm high. What is 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 10 ms-2 and specific heat capacity of weather as 4200J kg-1K-1
0.15°C
1.50°C
15.00°C
21.00 °C
50.00°C
Correct answer is B
water height as 630cm, gravity = 10m/s\(^2\), specific heat capacity of weather as 4200J
Temperature change = \(\frac{gh}{c}\) = \(\frac{630*10}{4200}\)
= 1.5C