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An iron block of mass 2kg, fall form a h...

An iron block of mass `2kg`, fall form a height `10m`. After colliding with the ground it loses `25%` enegry to surroundings. Then find the temperature rise of block. (Take sp. Heat of iron `470 J//kg^(@)C)`

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`mS Delta theta = (1)/(4) mg h rArr Delta theta = (10 xx 10)/(4 xx 470)`
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