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A 50 g lead bullet (specific heat 0.02) ...

A `50` g lead bullet (specific heat `0.02`) is initially at `30^(@)C`. It is fired vertically upward with a speed of `840 ms^(-1)`. On returning to the starting level it strikes a cake of ice at `0^(@)C`. How much ice is melted ? Assume that all energy is spent in melting only. Latent heat of ice `=336 j g^(-1)`.

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A 50 gm lead bullet (sp. Heat 0.020 cal//g) is initially at 30^(@)C . It is fired vertically upward with a speed 84 m//s On returning to the starting level, it strikes a slab of ice at 0^(@)C . (Axx100) mg of ice is melted. Find the value of 'A' .

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