Предмет: Физика, автор: margarita19042007

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Ответы

Автор ответа: Kxandau
0

Ответ:

1) 22км/ч >  20 м/с

20м/с = 5,5 км/ч

2) m = 1030 г = 1,03 кг

p = 1030 кг/м3

V = m/p = 1.03 / 1030 = 0.001 м3

3) а) V1 = 100/8 = 12.5 м/с

V2 = 100/20 = 5 м/с

б) 12,5 - 5 = 7,5 м/с

в) S1 = 12.5 * 12 = 150м

г) S2 = 5*27 = 135 м

4) Плотность тел у всех одинаковое

5) Ответ: 2)Объяснение:

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