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35. (1), (2), (3) (5). (4) 180 (6). (2) . 20 . ( ) . . 2 . 1000 /3; 4,2103 /(), .
V = 180 = 1,810-4 3 R = 2 I = 1,5 T 1 = 293 T 2 = 298 r = 1000 /3 = 103 /3 = 4200 /( × ) = = 4,2103 /( × ) t = 20 = 1200 | ʳ , , Q1 = cm(T2 T1); m = ρV; Q1 = cρV(T2 T1). ʳ , , - Q2 = UIt = I2Rt. 㳿 ( Q1) Q2, . . ϳ Q 1 Q 2: . |
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