Question

ФИЗИКА 8 КЛАСС 2 И 3 ЗАДАНИЕ
ЗА 5 МИНУТ ПЛИЗ

Answer 1

$4 \times m1 + 2 \times m2 = 3 \times m3 \\ 4 \times m2 = 3 \times (m1 + m3) \\ \\ m2 = \frac{3 \times m3 - 4 \times m1}{2} \\ 2 \times (3 \times m3 - 4 \times m1) = 3 \times (m1 + m3) \\ 6 \times m3 - 8 \times m1 = 3 \times m1 + 3 \times m3 \\ 3 \times m3 = 11 \times m1 \\ m3 = \frac{11 \times m1}{3} = \frac{11 \times 0.042}{3} = 0.154 \\ m2 = \frac{3 \times m3 - 4 \times m1}{2} = \frac{3 \times 0.154 - 4 \times 0.042}{2} = 0.147$
$l = 0.08 \\ h = 0.06\\ p(h2o)g {l}^{2} h = pg \times 6( {l}^{2} \times 0.01) \\ p = \frac{p(h2o)g {l}^{2} h}{0.06g {l}^{2} } = \frac{1000 \times 0.06}{0.06} = 1000$