Предмет: Физика, автор: veruntcha

Атомный ледокол, развивая среднюю мощность 32400 Квт прошёл во льдах 20 км за 5 ч. Определить среднюю силу сопротивления движению ледокола.

Ответы

Автор ответа: kirills1

8

A = F * S ---------------------------> F = $\frac{A}{S}$

A - работа
S - путь ( 20 км = 20000 м )

A = N * t

N - мощность ( 32400 кВт = 32400000 Вт )
t - время ( 5 ч = 18000 с )

A = 32400000 * 18000 = 583200000000 Дж

F = $\frac{583200000000}{20000}$ = 29160000 H = 29,16 MH

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Алекс- yeah please I'll take this one

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