Предмет: Физика, автор: erekenovakamilla

в телефоне для воспроизведения человеческой речи используется диапазон частот от 300 до 2000 гц найдите соответствующий ему диапозон длин волн

Ответы

Автор ответа: ded66

Считаем скорость звука равной
V = 330 м/с

Из формулы
V = λ*υ
находим:
λ = V / υ

λ₁ = V / υ₁ = 330 / 300 = 1,1 м
λ₂ = V / υ₂ = 330 / 2000 = 0,165 м

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: verivadim7878

разность чисел 36 и 9 увеличить на их произведение

2 года назад

Предмет: Алгебра, автор: ERORKA9533

если x2-y2=7 а 3x+3y=63 то x-y=?

2 года назад

Предмет: Математика, автор: Kukuna6928

200-4×25+8=как правельно решить 4 класс?помогите

2 года назад

Предмет: Английский язык, автор: yarkovskaya02

Text
SHOPPING STREET.

Nowy Swiat which means New World is the best shopping street in the world. It is not in London, New York or Paris but in Warsaw. 14000 Poles walk down this main street every hour. It is a lovely place to shop. There are statues, palaces, attractive town houses, exclusive cafes, and high-class restaurants. The buildings are not too tall. They look old but in fact they are rather modern. There aren’t any billboards or neon lights. There isn’t any loud music and there aren’t many tourists. People think that Polish shops have nothing to sell, so nobody comes shopping here. The world doesn’t know about this paradise for shoppers yet. It is now possible to buy almost everything in Warsaw. There are a lot of shops from the West, but the interesting thing that Polish manufacturers produce high quality goods. They are good because Polish plants don’t produce the goods for world consumption. Nowy Swiat has a lot of small shops, specialist shops and chic shops. There are also book shops and record shops. And there are a lot of small boutiques that sell men’s and women’s clothes that aren’t too expensive. It hasn’t got the huge department stores that sell the same things everywhere.

I. Ответьте на вопросы к тексту.
1. How many people visit Nowy Swiat every day?
2. What are there in the street?
3. What goods do Polish manufacturers produce?
4. Why are Polish goods of high quality?
5. What kind of shops are there?

II. Согласитесь с данными утверждениями или опровергните их.
Nowy Swiat is in New York
All buildings in Nowy Swiat are old.
There are many billboards in the street.
There aren’t many tourists in Nowy Swiat.
Everybody knows about this paradise for shoppers.
Polish shops have nothing to sell.
7. It has got the huge department stores.

8 лет назад

Предмет: География, автор: Elizabhet88

1)
Чем потухшие вулканы отличаются от действующих?
2)
Найдите по координатам вулканы и укажите их абсолютную высоту
 19с.ш.97 з.д.
 2 ю.ш. 78 з.д.
 4 ю.ш.38 в.д.
 55 с.ш.160 в.д.
 6 ю.ш.106 в.д.

8 лет назад