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Консультация № 196580
05.10.2019, 09:50
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Здравствуйте! У меня возникли сложности с таким вопросом:
Каково расстояние между пучностями стоячей волны при скорости звука 340 м/с и частоте колебаний 440 Гц?
Каково расстояние между пучностями стоячей волны при скорости звука 340 м/с и частоте колебаний 440 Гц?
Обсуждение
06.10.2019, 10:26
общий
это ответ
Здравствуйте, arty324gh!
На длину волны приходится 2 пучности. Тогда расстояние между ними (в метрах)
На длину волны приходится 2 пучности. Тогда расстояние между ними (в метрах)
Об авторе:
Понеже не словес красных бог слушает, но дел наших хощет
Понеже не словес красных бог слушает, но дел наших хощет
09.10.2019, 11:43
общий
это ответ
Здравствуйте, arty324gh!
Дано: [$965$]=340 м/с -- скорость звука; [$957$]=440 Гц -- частота колебаний.
Определить: l -- расстояние между пучностями стоячей волны.
Решение
Согласно [1, с. 203], расстояние между соседними пучностями стоячей волны равно половине длины [$955$] волны. Тогда, в соответствии с формулой для длины волны [$955$]=[$965$]/[$957$] [1, с. 189], получим
Ответ: приблизительно 0,386 м.
Литература
1. Груздёв В. А. и др. Физика. В 2 ч. Ч. 2. -- Минск: РИВШ, 2009. -- 312 с.
Дано: [$965$]=340 м/с -- скорость звука; [$957$]=440 Гц -- частота колебаний.
Определить: l -- расстояние между пучностями стоячей волны.
Решение
Согласно [1, с. 203], расстояние между соседними пучностями стоячей волны равно половине длины [$955$] волны. Тогда, в соответствии с формулой для длины волны [$955$]=[$965$]/[$957$] [1, с. 189], получим
l=[$955$]/2=[$965$]/(2[$957$])=340/(2*440)=340/880=17/44=0,38(63)[$8776$]0,386 (м).
Ответ: приблизительно 0,386 м.
Литература
1. Груздёв В. А. и др. Физика. В 2 ч. Ч. 2. -- Минск: РИВШ, 2009. -- 312 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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