101206-opp - played by Ruth Laredo 12/6/10 Physics 121 1...

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Unformatted text preview: played by Ruth Laredo 12/6/10 Physics 121 1 12/6/10 Physics 121 3 12/6/10 Physics 121 4 m1c1 T1 = m2 c2 T2 12/6/10 Physics 121 6 Q=C T C = mc 12/6/10 Physics 121 7 12/6/10 Physics 121 8 Q = m1c1 T1 = m1c1 (T f T1i ) Q = m2 c2 T2 = m2 c2 (T f T2i ) m1c1 (T f T1i ) = m2 c2 (T f T2i ) m1c1 (T f T1 ) = m2 c2 (T2 Tf ) m1c1T1 + m2 c2T2 Tf = m1c1 + m2 c2 m1c1 m2 c2 T1 + T2 Tf = m1c1 + m2 c2 m1c1 + m2 c2 12/6/10 Physics 121 9 Q = ± mc T 12/6/10 Physics 121 10 12/6/10 Physics 121 11 12/6/10 Physics 121 12 12/6/10 Physics 121 13 12/6/10 Physics 121 14 T=Z Z= 12/6/10 L A Physics 121 15 Heat flow per unit area = k= A L T=Z = A T=R 12/6/10 Physics 121 1 L = k Thermal conductance A Thermal resistance (R-value) 16 Material Steel k (W/m-C) Material 12-45 k (W/m-C) Wood 0.4 Aluminum 200 Insulation 0.04 Copper 380 Air 0.025 12/6/10 Physics 121 17 ...
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