64. (a) Using Eq. 18-32, the rate of energy flow through the surface is ()62cond4300 C 100 C(0.026 W/m K)(4.00 10 m )0.208W0.21 W.1.0 10 mswkA TTPL−−−°− °==⋅×=≈×(Recall that a change in Celsius temperature is numerically equivalent to a change on the
This is the end of the preview. Sign up
access the rest of the document.