Chapter 25, Problem 25P

(a)

To determine

The power that is emitted per square meter from the surface of the Sun, if the Sun radiates $3.9\times {10}^{26}\text{ J}$ of electromagnetic radiations each second. The diameter of Sun is equal to $1.4\times {10}^9\text{ m}$.

(b)

To determine

The power that is received per square meter by the Earth’s surface, if the Sun radiates $3.9\times {10}^{26}\text{ J}$ of electromagnetic radiations each second. The diameter of the Sun is equal to $1.4\times {10}^9\text{ m}$ and the distance between Sun and Earth is $1.5\times {10}^{11}\text{ m}$.

(c)

To determine

The assumptions for calculating the power that is received by the Earth’s surface, if the Sun radiates $3.9\times {10}^{26}\text{ J}$ of electromagnetic radiations each second. The distance between Sun and Earth is $1.5\times {10}^{11}\text{ m}$. The diameter of the Sun is equal to $1.4\times {10}^9\text{ m}$.