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Консультация № 200428
16.03.2021, 10:47
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Интенсивность звука J = 1 Вт/м2. Определить плотность энергии звуковой волны, если звук распространяется в сухом воздухе при нормальных условиях.
Интенсивность звука J = 1 Вт/м2. Определить плотность энергии звуковой волны, если звук распространяется в сухом воздухе при нормальных условиях.
Обсуждение
21.03.2021, 00:58
общий
это ответ
Здравствуйте, gleb.babin!
Предлагаю Вам следующее решение задачи.
Дано: J=1 Вт/м2 -- интенсивность звука.
Определить: w -- (среднюю) объёмную плотность энергии звуковой волны.
Скорость звука в сухом воздухе при нормальных условиях составляет приблизительно v=343 м/с [1]. Интенсивность звука связана со средней объёмной плотностью энергии звуковой волны соотношением
[2, с. 101], откуда следует, что
(Дж/м3).
Ответ:
Дж/м3.
Использованные источники
1. https://zen.yandex.ru/media/helperia/chemu-ravna-skorost-zvuka-5bcf44aca76a1300a9405331
2. Чертов А. Г., Воробьёв А. А. Задачник по физике. -- М.: Высш. школа, 1988. -- 527 с.
Предлагаю Вам следующее решение задачи.
Дано: J=1 Вт/м2 -- интенсивность звука.
Определить: w -- (среднюю) объёмную плотность энергии звуковой волны.
Решение
Скорость звука в сухом воздухе при нормальных условиях составляет приблизительно v=343 м/с [1]. Интенсивность звука связана со средней объёмной плотностью энергии звуковой волны соотношением
[2, с. 101], откуда следует, что (Дж/м3).Ответ:
Дж/м3.Использованные источники
1. https://zen.yandex.ru/media/helperia/chemu-ravna-skorost-zvuka-5bcf44aca76a1300a9405331
2. Чертов А. Г., Воробьёв А. А. Задачник по физике. -- М.: Высш. школа, 1988. -- 527 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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