A piece of ice falls from a height h, so that it melts completely. Only $$one-quarter$$ of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is (Take$$, latent heat of ice is $$3.4$$ X $$105$$ ]$$/kg$$ and g $$=$$ $$10$$ $$N/kg)

Question

Infinity Learn · Accepted Answer

According to the conservation of energy, energy gained by the ice during its fall from height h is given byE $$=$$ mghAs given, only one quarter of its energy is absorbed by the ice.So,   $$mgh4=mLf$$⇒ $$h=mLf$$×$$4mg=Lf$$×$$4g=3.4$$×$$105$$×$$410=13.6$$×$$104=$$ $$136000$$ m $$=$$ $$136km$$

A piece of ice falls from a height h, so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is (Take, latent heat of ice is 3.4 X 10⁵ ]/kg and g = 10 N/kg)

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A piece of ice falls from a height h, so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is (Take, latent heat of ice is 3.4 X 105 ]/kg and g = 10 N/kg)

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Ready to Test Your Skills?

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A piece of ice falls from a height h, so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is (Take, latent heat of ice is 3.4 X 10⁵ ]/kg and g = 10 N/kg)