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Stainless$-$steel ball bearings $)=(8085\frac{kg}{m^3}$ having a diameter of $1\mathrm{.}8cm$ are to be quenched in water at a rate of $1100$ per minute. The balls leave the oven at a uniform temperature of $900C$ and are exposed to air at $20C$ for a while before they are dropped into the water. The temperature of the balls drops to $850C$ prior to quenching. Use data from the tables. The specific heat capacity value for stainless$-$steel is $0\mathrm{.}480k\frac{J}{k}g*C.$

Determine the rate of heat transfer from the balls to the air.

The rate of heat transfer is $k\frac{J}{m}in.$