Monday
September 1, 2014

Homework Help: physics

Posted by Anonymous on Monday, October 11, 2010 at 9:01pm.

There is a heat flow through a block of cross sectional area 21.5 cm2 and length 39 cm when the temperature difference of 18 degree Celsius is established across the block.
Find the rate of heat flow through the block, assuming it is made of aluminium with thermal conductivity k = 205 W/(m*K)

(-kA) * (Change in T/change in x)
A is the cross-sectional surface area,
ΔT is the temperature difference between the ends,
Δx is the distance between the ends

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