College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 11

The U.S. five-cent coin, the nickel, has a mass of 5.1 g, a volume of 0.719 cm 3 , and a total surface area of 8.54 cm 2. Assuming that a nickel is an ideal radiator, how much radiant energy per second comes from the nickel, if it is at 20 °C