Объяснение:
a) R = 32 Ом
б) I = P/U ≈ 6.8 A
в) T = Q / (η*P) = ρ*V*c*(t2-t1)/ (η*P) = 0.01*1000*4200*(70-20) / (0.9 * 1500) = 1556 c ≈ 26 хв
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Объяснение:
a) R =
32 Ом
б) I = P/U ≈ 6.8 A
в) T = Q / (η*P) = ρ*V*c*(t2-t1)/ (η*P) = 0.01*1000*4200*(70-20) / (0.9 * 1500) = 1556 c ≈ 26 хв