It is known that oranges can be exposed to freezing temperatures for short periods of time without sustaining serious damage. As a representative case, consider a 0.10-m-diameter orange, originally at...

It is known that oranges can be exposed to freezing temperatures for short periods of time without sustaining serious damage. As a representative case, consider a 0.10-m-diameter orange, originally at a uniform temperature of 5C, suddenly exposed to surrounding air at
5C. For a surface coefficient, between the air and orange surface, of 15 W/m²
K, how long will it take for the surface of the orange to reach 0C? Properties of the orange are the following: