Which Object Will Emit More Electromagnetic Radiation Than It Absorbs

Multiple Choice

Which object will emit more electromagnetic radiation than it absorbs from its surroundings?

A) a 600 °C copper sphere in a 700 °C oven
B) a girl scout sitting close to a campfire
C) an ice cube in beaker of water at 50 °C
D) a 200 °C copper coin in a beaker of water at 98 °C
E) an ice cube in thermal equilibrium with the interior of a freezer