Question

Hailstone at 0°C falls from a height of 1 km on an insulating surface converting whole of its kinetic energy into heat What part of it will melt
19 =10m/s" Le = 330 x 109kg
(A)
(B)
(C) 10-4
(D) All of it will melt

Answer 1

Explanation:

Hailstone possesses potential energy due to is height. Let k be the fraction ice that melts.

Hence,

Potential energy=k×latent heat

mgh=kmL⇒k= L

gg = 330×10 3

10×1000 ≈ 331

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