A Hot Metal Ball Is Hung in an Oven That

Multiple Choice

A hot metal ball is hung in an oven that is maintained at 700 K;and it cools.When the temperature of the ball is 950 K,it is losing heat at a rate of 0.15 J/min.At what rate will the ball lose heat when the ball reaches 820 K? Assume that the emissivity of the ball and its surface area do not change appreciably with temperature.

A) 0.1 J/min
B) 0.007 J/min
C) 0.08 J/min
D) 0.06 J/min
E) 0.04 J/min