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On 01/13/2015 04:53 AM, Anthony Lapinski wrote:/snip/
Here's Hewitt's answer from the Instructor's Manual:In this example, as in so many others, Hewitt conducts a master
The main reason for serving potatoes wrapped in aluminum foil
is to increase the time that the potatoes remain hot after being
removed from the oven. Heat transfer by radiation is minimized
as radiation from the potatoes is internally reflected, and heat
transfer by convection is minimized as circulating air cannot make
contact with the shielded potatoes.
class in faulty reasoning. /clip/
It also fails the basic grade-school requirement to CHECK
THE WORK.
Well, finally, that part of the answer contains a bit of/snip/
correct physics. It is still sloppy reasoning because it
fails to consider simpler and better ways of achieving the
same objective.