Question
The Sun radiates energy at the rate of $3.80 \times 10^26 \textrm{ W}$ from its $5500^\circ\textrm{ C}$ surface into dark empty space (a negligible fraction radiates onto Earth and the other planets). The effective temperature of deep space is $-270^\circ\textrm{C}$. (a) What is the increase in entropy in one day due to this heat transfer? (b) How much work is made unavailable?
1. $1.04 \times 10^{31} \textrm{ J/K}$
2. $3.28 \times 10^{31} \textrm{ J/K}$
Solution Video