For the preparation of food, polar explorers use water obtained from melted ice, and as a heating unit, they use a wood-burning stove. What mass of ice m, taken at its melting point, can be completely converted into water by burning dry firewood of mass, equal to md? The efficiency of the stove is η. Insert the formulas from the list into the text, which allow solving this problem and obtaining the formula for calculating the mass of melted ice. Move the necessary formulas into the text using a computer mouse. The efficiency of the stove η can be expressed by the formula can be found by the formula , where Q_useful is the useful heat quantity Q_spent is the spent heat quantity After mathematical transformations, the formula for determining the mass of melted ice will look like List of formulas: η = Q_useful / Q_spent Q = λm m = Q / (ηλ) η = Q_spent / Q_useful m = ηQ / λ Q = qm m = λ / (ηqm)

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