Предмет: Физика, автор: CaTaHa124

нужно решить
Найти диаметр молекул водорода , если для водорода при нормальных условиях длина свободного пробега молекул равна 112 нм

Ответы

Автор ответа: 88alleks88
0
L=1/sqrt(2)*pi*d^2*n    n=P/k*T d=sqrt(k*T/1,41*L*pi*P)=sqrt(1,38*10^-23*273/1,41*1,12*10^-7*3,13*1,01*10^5)=2,74*10^-10 м
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Past Progressive Tense
Put the verbs into the correct form, Past Progressive Tense or Past Simple Tense.
1. When I (phone) _______________________ my friends, they (play) ______________________ monopoly.
2. The kids (play) ___________________ in the garden when it (suddenly, begin) ________________ to rain.
3. While Minnie (work) __________________ in his room, his friends (swim) ____________________ in the pool.
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5. When we (take out) ___________________ the garbage, it (get) ___________________ dark.
6. The wife (put on) ___________________make-up while the husband (polish) ___________________ his shoes.
7. A: What (you/do) ___________________ when these people arrived?
8. Nobody (listen) ___________________ while the teacher (explain) ___________________ the tenses.
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10. I (practice) ___________________ the guitar when he (come) ___________________ home.
11. While we (do) ___________________a sight-seeing tour, our friends (lie) ___________________ on the beach.
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___________________ a dog in the middle of the road. The dog (watch) ___________________the car.
James (stop) ___________________ and (get) ___________________ out of his car. As he (get)
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to his car. While he (get) ___________________ in it, the dog (appear) ___________________ again and
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