일반물리학 1 — Temperature, Heat, and the First Law of Thermodynamics: Problem 36

36 What mass of butter, which has a usable energy content of 6.0 Cal/g (\(= 6000 \text{ cal/g}\)), would be equivalent to the change in gravitational potential energy of a 78.0 kg man who ascends from sea level to the top of Mt. Everest, at elevation 8.84 km? Assume that the average \(g\) for the ascent is \(9.80 \text{ m/s}^2\).