Task 11128.
How far can a car with a mass of 500 tons pass on a road with a coefficient of friction of 0.025 at a constant speed, if it uses 25% of the heat that it could receive by burning coal with a mass of 250 tons? The heat of combustion of coal is 25 MJ / kg. Answer expressed in kilometers.
A detailed solution with a brief description of the condition, formulas and laws used in the solution, the derivation of the formula and the answer.
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