Hot or not?

The Sun puts out a steady stream of roughly 4×10264\times10^{26} W of radiation and weighs about 2×10302\times10^{30} kg, while the average human eats 2,000,000 calories (1 Calorie = 1,000 calories) or \approx 8,000,000 Joules a day, most of which is radiated as heat.

Calculate P/mP/m, the rate of heat radiation per unit mass, for the Sun and for the human body. Approximately how many times greater is P/mP/m for the Sun than for the human body?

×

Problem Loading...

Note Loading...

Set Loading...