If you were to walk briefly in space without a spacesuit, Ask an Expert

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If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie 2001), you would feel the cold of space -- while you radiated energy, you would absorb almost none from your environment. Assume that your emmisivity is 0.90, the surface area of your body is 2.2 m2, and your skin temperature is 303 K.

(a) At what rate would you lose energy?

(b) How much energy would you lose in 10 s?

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