Предмет: Физика, автор: gluup0r13

Допоможіть будь ласка даю 40 БАЛІВ
1.Визначте тиск кисню, якщо концентрація його молекул дорівнює 5ꞏ10^24 м^ –3 , а
середня квадратична швидкість руху його молекул становить 520 м/с.
2.Середня кінетична енергія поступального руху молекул газу в балоні дорівнює
5ꞏ10 ^–22 Дж. Чому дорівнює температура газу в цьому балоні?

Ответы

Автор ответа: lvv9136
1

Ответ:

Объяснение:

1. n =5ꞏ10²⁴ м⁻³

m₀=5,33 * 10⁻²⁶ кг

Vкв=520 м/с          

P - ?

Основное уравнение МКТ:

p = (1/3)·n·m₀·Vкв²=5ꞏ10²⁴*5,33 * 10⁻²⁶*520²/3=24020 Па

2. E = 5ꞏ10 ⁻²² Дж

k = 1,38·10⁻²³ Дж/К    

Т ?

E = (3/2)·k·T

абсолютная температура

T = 2·E / (3·k) = 2·5·10⁻²² / (3·1,38·10⁻²³) ≈ 24 К

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