A Runner Generates 1260 W of Thermal Energy

question 91

Multiple Choice

A runner generates 1260 W of thermal energy. If this heat has to be removed only by evaporation, how much water does this runner lose in 15 minutes of running? The latent heat of vaporization of water is 22.6 × 10⁵ J/kg.

• A) 50 g
• B) 500 g
• C) 35 g
• D) 350 g
• E) 40 g

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