Почему ферродинамические счетчики применяются в цепях постоянного тока, а индукционные - в цепях переменного тока?

                    m= 0,1кг+ 0,5 кг+ 0,05кг+ 0,1кг =0,75кг

                                        v 1= 0,1кг /1028 кг/м 3=0,000098м3

4. растительное масло           v 3 =0,05 кг/1345 кг/м 3=0,000037м3

m 4=0,1 кг                                                                 v 4=0,1кг /950 кг/м3=0,0001м3

ρ 4=950 кг/м3                           v=0,000098м3+0,000037м3+0,0001м3=0,000235м3

найти:   ρ теста     ρ =0,75кг/0,000235м3=3191кг/м3

ответ: ρ =3191 кг/м 3

Объяснение:

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