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Консультация № 196948
04.11.2019, 11:27
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Плоская звуковая волна возбуждается источником колебаний частоты ню = 200 Гц. Амплитуда колебаний источника равна 4 мм. Найти смещение точек среды, находящихся на расстоянии 100 см от источника в момент времени t = 0,1 с. Скорость звуковой волны 300 м/с.
Сделать рисунок.
Плоская звуковая волна возбуждается источником колебаний частоты ню = 200 Гц. Амплитуда колебаний источника равна 4 мм. Найти смещение точек среды, находящихся на расстоянии 100 см от источника в момент времени t = 0,1 с. Скорость звуковой волны 300 м/с.
Сделать рисунок.
Обсуждение
09.11.2019, 06:46
общий
это ответ
Здравствуйте, dar777!
В общем случае смещение точек среды в момент времени t на расстоянии x от источника плоских волн, имеющих амплитуду A, скорость v и частоту [$957$], описывается уравнением
В данном случае для A = 4 мм = 0.004 м, v = 300 м/с и [$957$] = 200 Гц уравнение примет вид
Подставляя значения x = 100 см = 1 м и t = 0.1 с, получаем
м,
то есть смещение равно -2 мм.
В общем случае смещение точек среды в момент времени t на расстоянии x от источника плоских волн, имеющих амплитуду A, скорость v и частоту [$957$], описывается уравнением
В данном случае для A = 4 мм = 0.004 м, v = 300 м/с и [$957$] = 200 Гц уравнение примет вид
Подставляя значения x = 100 см = 1 м и t = 0.1 с, получаем
м,то есть смещение равно -2 мм.
5
Это самое лучшее решение!
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