Предмет: Физика, автор: dpvpcraftru2004

волна с частотой 5 кГц распространяется в среде со скоростью 54 м/с Определите период и длину волны.​

Ответы

Автор ответа: DedStar
17

Ответ:

Период волны 0,2 мс

Длина волны 3 мм

Объяснение:

Дано:

ν = 5 кГц = 5 000 Гц

V = 54 км/ч = 15 м/с

____________________

T - ?

λ - ?

Период:

T = 1 / ν

T = 1 / 5000 = 0,2·10⁻³ с   или   T = 0,2 мс

Длина волны:

λ = V·T

λ = 15·0,2·10⁻³ = 3·10⁻³ м     или  λ = 3 мм

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