Предмет: Физика, автор: Vill22222222

Чему равна энергия фотона синего света,имеющего в ваккуме длину волны 435 н.м.Выразить в джоулях и электронвольтах

Ответы

Автор ответа: tana20101997
0
E=h*c/L=6,62*10^-34*3*10^8/435*10^-9=4,57*10^-19 Дж=2,86 эВ
Похожие вопросы
Предмет: География, автор: polina13450
Предмет: Английский язык, автор: kirp24050

Test 2
Variant 1

Name:__________________________ Class: _________ Date: _______________

Fill in the correct word: teaspoons, opposite, grated, overcooked, portions, nursery, grilled, preheat, piece, pinch

This restaurant serves very small _______________ . I’m hungry after I leave it!
I’d like two _______________ of sugar in my tea, please!
My mum is making pizza. We need some _______________ cheese.
_______________ chicken is my favourite dish!
I didn’t like vegetables at all. They were _______________ .
The test is very easy. It was a _______________ of cake.
You should add another _______________ of pepper to the sauce.
Bill likes sharing his food with other little children at the _______________ school.
Where’s the chemist’s? - _______________ the supermarket.
_______________ the oven to 190 °C and bake cherry cake for 50 minutes.


Complete the sentences with the words derived from the words in bold.
She has a very strong _____________ of coffee. She drinks tea. (like)
Her name is very difficult and most people ___________ it when they write it down. (spell)
I’ve had a ____________ with my History teacher. (understanding)
Mary is polite and never shows _____________ to others. (respect)
What are the _____________ of living in a big city?(advantages)

Fill in the gaps with the correct form of the verbs in brackets.
The police ____________________ (go) after a robber for over an hour.
We __________never______________(buy) things at the flea market.
The waiters ________already____________ (serve) steamed fish.
Vegetables ____________________ (boil) for 30 minutes.
We____________________ (try) to find tickets for the concert for three weeks.
My sister _________________(write) her new book for the last two months.
She _______________________ (not/read) this book yet.
You look tired! __________you ________________ (work) all day?
I _______________________ (not / eat) Chinese food yet.
How long _______ you ________________(study) English?
How many souvenirs you ________ your sister ______________(buy) in Spain?
I _______________________ (not / see) Tina for ages.
I ____________________(know) Mrs Brown for twenty years now.
Can we go soon? We ____________________ (walk) around this department store for about last two hours!
______ you ______________(do) your homework yet?

Complete the phrasal verbs with the right pre"Times New Roman, serif">down with, off, without, up, with, after, through
Mary went _______ the flu yesterday and she stayed at home.
Boys have gone _______ the kitten and caught it.
Don’t use this cheese! It’s gone _______ .
Dad is so sad. He is going _______ a difficult time.
The price of oil has gone _______ recently.
This dress goes _______ your new trousers.
What animals can do _______ water for a long time?

Fill in the gaps with a/an/the where necessary.
Ann can play _______ piano.
_______ Browns left for their annual holiday to _______ USA.
We go to _______ Bolshoi Theatre once a year.
When _______ car crashed it was going at 100 miles _______ hour.
In _______ Paris we went on _______ boat trip