Hailstones fall from a certain height. If they melt completely on reaching the ground, find the height from which they fall. (`g=10ms^(-2),L=80` calorie/g and J=4.2 J/calorie.)

Hailstones fall from a certain height. If only 1% of the hailstones melt on reaching the ground, find the height from which they fall. (g=10ms^(-2),L=80"calorie//g & J=4.2J/"calorie")

Hailstones fall from a certain height. If only 1% of the hailstones melt on reaching the ground, find the height from which they fall. (g=10 ms^(-2). L=80" calories/g "and J=4.2"J/calorie")

Hail stone fall from certain heigh. If only 2% of the mass of the hail stone melt on reaching the ground,, the height from which they fall is ( g=10ms^(-2), L=80 call//gm and J=4.2J//cal )

Hail stonces fall from certain height. If only 2% of the mass of the hail stone melt on reacting the ground,, the height from which they fall is ( g = 10 ms^(-2) , L = 80 cal/gm and J = 4.2J/cal)

An ice block at 0^(@)C falls from rest at certain height. If 0.1% of ice mels on reching the ground, then the height from which it is realsed (g=10m//s^(2),L=80cal//gm,J=4.2J//cal)

An object fallen freely from top of tower reaches at ground in 4s, then find the height of tower. (Take g = 10 ms^(-2) )