Предмет: Физика, автор: Regino4kak

Определить длину медной трубы, если звук от удара у одного конца трубы слышен у другого дважды с интервалом в 0.9 с.Скорость звука в воздухе 340 м/с, а в меди 3400м/c

Ответы

Автор ответа: Володя139
0

x - время скорости звука в воздухе
y -время скорости звука в меди
По условию они прошли одиннаковое расстояние => 340x = 3400y
x - y = 0.9 => x=0.9+y, подставляем x в 1 уровнение
340*(0,9 + y) = 3400, отсюда получаем у = 0,1 с
Определяем искомую длину умножая скорость на время 0,1 * 3400 м/с = 340 м (Ответ)

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