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It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg man runs on a treadmill for 30min and at a (total) metabolic energy expenditure rate of 1000W. Using the 1st law of thermodynamics, estimate the amount of energy lost in heat during that time. (Hint: see textbook, Section 11.2, and also the lecture notes #45, “Application of the 1st law of thermo to the human body” – CASE 1). A) 1350 kJ B) 1800 kJ C) 1000 kJ D) 450 kJ

It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg man runs on a treadmill for 30min and at a (total) metabolic energy expenditure rate of 1000W. Using the 1st law of thermodynamics, estimate the amount of energy lost in heat during that time. (Hint: see textbook, Section 11.2, and also the lecture notes #45, “Application of the 1st law of thermo to the human body” – CASE 1). A) 1350 kJ B) 1800 kJ C) 1000 kJ D) 450 kJ

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Part 2 ).

It is important for the body to be able to cool itself even during
moderate exercise. Suppose a 70kg man runs on a treadmill for 30min and at a (total)
metabolic energy expenditure rate of 1000W.

Using the 1st law of thermodynamics, estimate the amount of energy
lost in heat during that time. (Hint: see textbook, Section 11.2, and also the lecture notes
#45, “Application of the 1st law of thermo to the human body” – CASE 1).
A) 1350 kJ
B) 1800 kJ
C) 1000 kJ
D) 450 kJ

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