Question: PROBLEM # 1 A piece of copper ( dimensions 6 0 c m , 4 0 c m , 7 5 c m ) sits

PROBLEM #

1

A piece of copper

(

dimensions

60 c m, 40 c m, 75 c m)

sits between a heat source

(300 C)

and a room temperature environment

(22 C) .

The copper piece is orientated to offer the greatest spacing between the two temperature environments. Heat is transferred for three minutes. You wish to reduce the heat transferred by

25 %

by changing the shape of the copper piece to a cylinder but keeping the time interval and the spacing between the two environments the same. What is the exact radius of the cylinder that you will use?

PROBLEM # 1 A piece of copper ( dimensions 6 0 c

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