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якщо відстань від джерела УФВ до тіла збільшити в два рази, то в скільки разів потрібно зменшити потужність джерела, щоб інтенсивність опромінення не змінилася?
Ответы 1
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відповідь:якщо відстань до джерела збільшиться вдвічі, інтенсивність опромінення зменшиться в чотири рази.потужність джерела повинна бути зменшена в чотири рази.
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Автор:
rayleendn7d - 2 года назад
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Упражнение 207
Раскройте скобки, употребляя глаголы в Past Simple
unu Past Continuous.
1. I (to play) computer games yesterday. 2. I (to play)
computer games at five o'clock yesterday. 3. He (to play)
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8. She (to cook) the whole day yesterday.
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book. 19. What he (to do) the whole evening yesterday?
He (to read) a book. 20. She (to sleep) when you came
home?
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