While running, you need to transfer 290 J/s of thermal energy from your body to the moisture on your skin in order to remain at the same temperature. What mass of perspiration must you evaporate each second?

Question

Physics

Zain Houston

18 June, 07:36

While running, you need to transfer 290 J/s of thermal energy from your body to the moisture on your skin in order to remain at the same temperature. What mass of perspiration must you evaporate each second?

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Answers (1)

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Armani Brooks · Answer 1

= 1.33 * 10⁻⁴kg

Explanation:

Lets apply the formula for the evaporative enery transfer rate

H (evaporative) = - (Δm/Δt). l₀

= - 320 J/s

= - 320W

Δm = (320Δt) / l₀

Δt = 1

Δm = (320 * 1) / 2.4 * 10⁶

Δm = 1.33 * 10⁻⁴kg