Задача 20553.

With a height of fall for steel ingot weight of 1 kg hammer weight 2 tons if blank after hitting heated to 130 degrees? It is known that there is a heating of 50% of the energy of the hammer. The specific heat of steel 460 J / kg * K.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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