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argen08
argen08
26.03.2023 09:02 •  Физика

Очень завтра уже будет поздно! (КРАСНЫМ ЦВЕТОМ, подчёркнута ВАЖНАЯ информация!)


Очень завтра уже будет поздно! (КРАСНЫМ ЦВЕТОМ, подчёркнута ВАЖНАЯ информация!)
Очень завтра уже будет поздно! (КРАСНЫМ ЦВЕТОМ, подчёркнута ВАЖНАЯ информация!)
Очень завтра уже будет поздно! (КРАСНЫМ ЦВЕТОМ, подчёркнута ВАЖНАЯ информация!)

👇
Ответ:
honutem
honutem
26.03.2023

Объяснение:

1) вертолет

V1 = 7.7  км/ч

V2 = 6.7 км/ч

V=?

По теореме Пифагора

V = √(V1^2 + V2^2) = √(7.7^2 + 6.7^2) = 10.2 км/ч

2) про парашютиста - ответ №2

3)

F1 = 5*F2

m1 = 2*m2

а1/а2=?

а1 = F1 / m1

a2 = F2 / m2

a1/a2 = (5*F2*m2) / (2*m2*F2) = 5/2 = 2.5 раза

Ускорение уменьшиться в 2,5 раза

4,5(66 оценок)
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Ответ:
annymayy0
annymayy0
26.03.2023

Реально Мухтар будет двигаться по окружности с радиусом 50-\frac{15}{\sqrt{2}}\approx39.39м

А в идеале радиус этой окружности может быть 50-15=35м

 

Тогда длины этих окружностей будут:

реал: 39,39*6,28=347,37м

идеал: 35*6,28=219,8м

 

Скорость собаки 22,6км/ч=22,6(1000м/3600с)=6,28м/с

 

Тогда время будет:

реал: 347,37/6,28=55с

идеал: 219,8/6,28=35с

 

В принципе идеальный случай мозможен при условии, собака бежит уже не первый круг и соответственно разогнала цепь до такой же угловой скорости, с которой бежит сама.

Так что в ответ можно записать 35с

4,5(87 оценок)
Ответ:
osapkina
osapkina
26.03.2023

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Q=c*m*t=500*20*80=800кДж        

4,5(95 оценок)
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