We would like to know how heating ( or cooling) processes speed up as we reduce size. Consider a slab geometry. Starting from the equation for the average temperature of a slab, comment on how the...

We would like to know how heating ( or cooling) processes speed up as we reduce size. Consider a slab geometry. Starting from the equation for the average temperature of a slab, comment on how the required time to heat (or cool) to the same final average temperature would change when the slab size is halved.