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PHYSICS

JAMB 2017 - Question 1

Physics 2017 JAMB Past Questions - Question 1: A waterfall is 420m high. calculate the difference in temperature of the water between the top and bottom of the waterfall assuming no heat is lost.

Choose the correct answers from the options given.

A waterfall is 420m high. calculate the difference in temperature of the water between the top and bottom of the waterfall assuming no heat is lost.

A: 1.0°C

B: 42.0°C

C: 4.2°C

D: 0.1°C

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Correct Answer

Explanation

Potential Energy = Heat Energy

mgh = McΔθ=gh/c=10×240/4.20×10^3

= 1.0°C