- #1
Hendrick
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Homework Statement
What is the percentage increase in the rate of heat radiated from a person with a surface skin temperature of 34.0 °C compared with the same person with a skin temperature of 33 °C?
Homework Equations
Stefan's Law of emission:
P = σAeT^4
- P = rate of energy transfer (Watts)
- σ = 5.6696 x 10^–8 W m^–2 K^–4
- A = surface area of the object
- e = emissivity (varies from 0 to 1)
- T = temperature (Kelvins)
The Attempt at a Solution
(34+273)^4/(33+273)^4
= 1.013 % (3sf)
Actual answer is 1.31%