Task 30972.

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The current in the wire (u = 35 cm ^ 2 / (V * s); n = 1,02 * 10 ^ 23 cm ^ 3; l = 40 m; S = 0.1 mm ^ 2) increases according to the expression I = 0 , 1t A. Find: The number of electrons passing through the cross-section of wires in the time interval from t1 = 1cdo t2 = 4c; the amount of heat released in the wire during this time.

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