Предмет: Физика, автор: Irunka1999

Визначити внутрішню енергію повітря в кімнаті розмірами 5м 4м 3м при температурі 20 градусів при нормальному атмосферному рівні

Ответы

Автор ответа: IUV

если предположить что основным компонентом воздуха являются азот и кислород (двухатомные газы) с 5 степенями свободы (i=5) и средняя молярная масса воздуха 29 г/моль то
pV=m/M*RT
U=mRT*i/2=M*p*V*i/2=0,029*10^5*5*4*3*5/2 Дж= 435000 Дж = 435 кДж

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1)I saw Paul at the airport. He ____ for his brother’s plane to arrive from Canada.

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2)Robert didn’t answer the phone when Mary called. He ____ a shower and didn’t hear the phone ring.

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Am coming

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At

By

For

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About

At

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