density 6.0 g/cm3 gallium barometer 9.5×10^4 Pa

density 6.0 g/cm3 gallium barometer 9.5×10^4 Pa

 

 

밀도 d = 6.0 g/cm3의 갈륨이 기압계의 유체로 사용되고

외부 압력이 9.5×10^4 Pa이라면,

기둥의 높이는 얼마가 되겠는가?

 

 

Gallium melts just above room temperature and is liquid

over a very wide temperature range (30–2204 ℃),

which means it would be a suitable fluid

for a high-temperature barometer.

Given its density, dGa = 6.0 g/cm3,

what would be the height of the column

if gallium is used as the barometer fluid

and the external pressure is 9.5×10^4 Pa?

 

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P = ρgh

( 참고 https://ywpop.tistory.com/20902 )

 

 

 

1 Pa = 1 kg/m•s2 이므로,

9.5×10^4 Pa = 9.5×10^4 kg/m•s2

 

 

 

1 g/mL = 1000 kg/m3 이므로,

(6.0 g/mL) (1000 kg/m3 / 1 g/mL) = 6.0×10^3 kg/m3

 

 

 

h = P / ρg

= (9.5×10^4 kg/m•s2) / [(6.0×10^3 kg/m3) (9.81 m/s2)]

= (9.5×10^4) / [(6.0×10^3) (9.81)]

= 1.614 m

 

 

 

답: 1.6 m

 

 

 

 

[키워드] 갈륨 기압계 기준문서, 갈륨 기압계 사전