USA. It is faraway country, on the other side of the world. It is country of contrasts and great opportunities. There are a number of time zones and two oceans, the Pacific and the Atlantic, between us. And what attracts me to it?
The US is state with rich cultural heritage and fascinating history. It has passed a long way of formation and has earned respect from other countries. During the Second World War the US had been a reliable support for the Soviet Union because it had helped much in the fight against the fascism.
America gave the world a lot of great people, such as Abraham Lincoln, James Fenimore Cooper, Ernest Hemingway and Martin Luther King. This list is endless. We should not forget about Christopher Columbus, because he had discovered this previously unknown continent.
Объяснение:
я не знаю это правильно или не правильно
R₀ = 21 Ом;
I₀ = 12 А;
P₀ = 30 24 Вт;
I₁ = 8,4 А; U₁ = 50.4 B; P₁ = 423,36 Вт;
I₂ = 5,04 А; U₂ = 181,44 B; P₂ = 914,4576 Вт;
I₃ = 1,68 А; U₃ = 20,16 B; P₃ = 33,8688 Вт;
I₄ = 1,12 А; U₄ = 20,16 B; P₄ = 22,5792 Вт;
I₅ = 2,24 А; U₅ = 20,16 B; P₅ = 45,1584 Вт;
I₆ = 3,36 А; U₆ = 134,4 B; P₆ = 451,584 Вт;
I₇ = 3,36 А; U₇ = 67,2 B; P₇ = 225,792 Вт;
I₈ = 1,8 А; U₈ = 72 B; P₈ = 129,6 Вт;
I₉ = 1,8 А; U₉ = 72 B; P₉ = 129,6 Вт;
I₁₀ = 3,6 А; U₁₀ = 180 B; P₁₀ = 648 Вт;
Объяснение:
R₁ = 6 Ом; R₂ = 36 Ом; R₃ = 12 Ом; R₄ = 18 Ом; R₅ = 9 Ом;
R₆ = 40 Ом; R₇ = 20 Ом; R₈ = 40 Ом; R₉ = 40 Ом; R₁₀ = 50 Ом;
U = 252 B;
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Найти:
R₀ - общее сопротивление цепи
I₀, - сила тока в цепи
I₁, ... I₁₀ - сила тока, проходящего через каждый резистор
U₁, U₂, ... U₁₀ - напряжение на каждом резисторе
Р₀ - мощность на всей цепи
Р₁, Р₂, ... Р₁₀ - мощность на каждом резисторе
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Решение смотри на прикреплённых файлах
750-720=30 мм рт,столба
каждые 12 метров давление уменьшается в 1 мм рт столба
30*12=360
h=360 метров