101206 - Physics 121 14 Physics 121 Phys 121 Prof E F Redish 5 15 Physics 121 ± T = Z ² Z = ± L A 16 Physics 121 = ² A k = 1 ³ ± T = Z ² = L

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Phys 121 12/6/10 Prof. E. F. Redish 1 12/6/10 1 Physics 121 played by Ruth Laredo 12/6/10 3 Physics 121 12/6/10 4 Physics 121
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Phys 121 12/6/10 Prof. E. F. Redish 2 12/6/10 6 Physics 121 2 2 2 1 1 1 T c m T c m ± ² = ± 12/6/10 7 Physics 121 T C Q ± = mc C = 12/6/10 8 Physics 121
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Phys 121 12/6/10 Prof. E. F. Redish 3 12/6/10 9 Physics 121 Q = m 1 c 1 ± T 1 = m 1 c 1 ( T f ² T 1 i ) ² Q = m 2 c 2 ± T 2 = m 2 c 2 ( T f ² T 2 i ) m 1 c 1 ( T f ² T 1 i ) = ² m 2 c 2 ( T f ² T 2 i ) m 1 c 1 ( T f ² T 1 ) = m 2 c 2 ( T 2 ² T f ) T f = m 1 c 1 T 1 + m 2 c 2 T 2 m 1 c 1 + m 2 c 2 T f = m 1 c 1 m 1 c 1 + m 2 c 2 ³ ´ µ · ¸ T 1 + m 2 c 2 m 1 c 1 + m 2 c 2 ³ ´ µ · ¸ T 2 12/6/10 10 Physics 121 Q mc ± T 12/6/10 11 Physics 121
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Phys 121 12/6/10 Prof. E. F. Redish 4 12/6/10 12 Physics 121 12/6/10 13
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Unformatted text preview: Physics 121 12/6/10 14 Physics 121 Phys 121 12/6/10 Prof. E. F. Redish 5 12/6/10 15 Physics 121 ± T = Z ² Z = ± L A 12/6/10 16 Physics 121 = ² A k = 1 ³ ± T = Z ² = L A ² = L k ´ µ ¶ · ² A ´ µ ¶ · ± T = R ¸ Thermal conductance Heat flow per unit area Thermal resistance (R-value) Material k (W/m-C) Material k (W/m-C) Steel 12-45 Wood 0.4 Aluminum 200 Insulation 0.04 Copper 380 Air 0.025 12/6/10 17 Physics 121...
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This note was uploaded on 12/28/2011 for the course PHYSICS 121 taught by Professor Shawhan during the Spring '10 term at Maryland.

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101206 - Physics 121 14 Physics 121 Phys 121 Prof E F Redish 5 15 Physics 121 ± T = Z ² Z = ± L A 16 Physics 121 = ² A k = 1 ³ ± T = Z ² = L

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