Предмет: Физика, автор: dianalatypova62

Частота колебаний крыльев мухи равна 255 Гц. Сколько колебаний за одну минуту совершает крыло мухи?

Ответы

Автор ответа: mg58

Частота — это число колебаний за 1 секунду. В минуте 60 секунд.
255х60 = 15300 колебаний.

Ответ: 15300 колебаний.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: География, автор: turgyninkar248

очень важно жду 15 минут

6 лет назад

Предмет: Английский язык, автор: JeyRun

ДАМ 10 БАЛЛОВ ЗА ПРАВИЛЬНЫЙ ОТВЕТ БЫСТРЕЕЕ!!!
1. We _______ use our phones in class.
A) can not
B) don’t can
C) not to can
D) can to not
2. ________ a ham and cheese pizza, please?
A) Can I to have
B) Do I Can have
C) Can I have
D) Have I can
3. She's seven years old, but she ________ read yet. Her parents are getting her extra lessons.
A) to can
B) does not can
C) has not can
D) can’t
4. ________water is in the ocean?
A) How much
B) How many
C) Any
D) Have some
5. _______ countries are there in the world?
A) How much
B) How many
C) Have some
D) Any
6. How ______ money will I need for 2 days in London?
A) some
B) many
C) many of
D) much
7. How _____ bread is eaten per day?
A) many of
B) many
C) much
D) some
8. She always takes _____ sugar with her coffee.
A) some
B) any
C) a lot
D) few
9. Shall we bake _______ cupcakes for the party?
A) Some
B) Any
C) Much
D) Many
10. We haven't got _____ oranges at the moment.
A) any
B) some
C) little
D) a lot of
11. - Have you got any plans for tomorrow?
- Yes, I ______ visit my grandparents.
A) go to
B) am going to
C) am not going
D) won’t
12. - Why is she learning Spanish?
- She ______ travel to Spain.
A) isn’t to
B) go
C) is going to
D) would to
13. - Are you free tomorrow?
- Sorry. I _______ study for the exam.
A) am go to
B) am go
C) am going to
D) won’t
14. What _______ you do if you win the lottery?
A) will
B) do you
C) was
D) does
15. - Would you like to go to the cinema? - No, sorry. I _______ clean the house.
A) won’t
B) am go
C) am go to
D) am going to
16. Go to bed and you ______ feel better tomorrow.
A) won’t
B) are
C) was
D) will
17. They _____ home at 10 o'clock.
A) be
B) are
C) were
D) will be
18. _____ you _____ me?
A) were; helped
B) will; help
C) does; helping
D) when; help
19. You _____ get a new dress tomorrow.
A) will
B) are
C) were
D) aren’t
20. Jim _______ go to school tomorrow. He's ill.
A) won't
B) aren’t
C) weren’t
D) doesn’t
21. Hurry up! They _____ (start) the film!
A) will started
B) are starting
C) are started
D) were starting
22. The garden is very green. It _____ (rain) a lot this month.
A) was rained
B) are rain
C) has rained
D) rainy
23. Brad _____ (live) in Chicago since 1998.
A) living
B) lived
C) were living
D) has lived
24. Where's Alison? We _____ (not see) her since yesterday.
A) haven’t seen
B) saw
C) were see
D) don’t see
25. Tom's my best friend. I _____ (know) him for three years.
A) am know
B) known
C) have known
D) was known
26. Who _______ the window?
A) did broke
B) broken
C) were broke
D) has broken
27. She ________ in Nebraska for five years
A) has lived
B) is living
C) was lived
D) will live
28. John _____ (not play) the violin since he was at school.
A) has not played
B) aren’t play
C) doesn’t play
D) were played
29. Mary _____ (study) hard this year, so she'll pass her exams.
A) studied
B) has studied
C) were study
D) will study
30. My brother and I _____ (not see) any films this week.
A) aren’t saw
B) haven’t seen
C) didn’t saw
D) haven’t see
31. In the art-gallery I saw a … picture of a woman sitting on the coach.
A) Italian, multicolored, old, beautiful
B) beautiful, old, multicoloured, Italian
C) multicoloured, Italian, old, beautiful
D) beautiful, old, Italian, multicoloured
32. Take off this… hat!
A) velvet, huge, ugly, old-fashioned, pink
B) huge, velvet, ugly, old-fashioned, pink
C) pink, velvet, huge, ugly, old-fashioned
D) ugly, huge, old-fashioned, pink, velvet
33. Which one is different?
A) I am waiting for my sister now.
B) I am meeting my parents for dinner tomorrow.
C) Listen, the baby is crying.
D) It is raining outside at the moment.
34. Mel and Lee ___________ a party at their place on Saturday night!
A) are have
B) have
C) are having
D) will having
35. - What are you doing __________?
- I haven't decided yet. What are you up to?
A) now
B) right now
C) at the moment
D) this weekend
СРОЧНО помогите очень прошуу!!!

6 лет назад

Предмет: Математика, автор: snigur2009

Математика 5 класс
Десятичные дроби
Сделайте пожалуйста

6 лет назад

Предмет: Математика, автор: 20032021

помогите решить пример по действиям
35080:40+(360-7)*30=
все действия написать

9 лет назад

Предмет: Математика, автор: дозан

В первом элеваторе былозерна в 2 раза больше, чем во втором.Из первогоэлеватро вы везли 750т.зерна,на второй элеватор превезли 250т,после чего в обоих элеваторах зерна стало поровну.Сколько зерна было первоночально в каждом элеваторе?

9 лет назад