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好吧问答库 > 0.4MPa等于多少mmHg？怎么换算的？

0.4MPa等于多少mmHg？怎么换算的？

2025年03月16日 07:31

有3个网友回答

网友（1）：

1标准大气压=0.1013MPa=760mmHg
(0.4/0.1013)x760=3001mmHg;

P=ρgh，水银的密度是13.6×10的3次方千克/立方米；
0.4x10的6次方Pa=13.6×10的3次方x9.8h
h=0.4×10的6次方/(13.6x10的3次方x9.8)=3.001(米)=3001mmHg；

网友（2）：

1标准大气压=0.1013MPa=760mmHg
(0.4/0.1013)x760=3001mmHg;

P=ρgh，水银的密度是13.6×10的3次方千克/立方米；
0.4x10的6次方Pa=13.6×10的3次方x9.8h
h=0.4×10的6次方/(13.6x10的3次方x9.8)=3.001(米)=3001mmHg；

网友（3）：

1mmHg=133.322Pa
1 MPa=7.5mmHg
7.5*0.4=3mmHg

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