静止油面(油面上为大气)下3m深度处的绝对压强为下列哪一项?(油的密度为 800kg/m3,当地大气压为100kPa)
2023-06-04
A.3kPa
B.23.5kPa
C.102.4kPa
D.123.5kPa
参考答案:D
B.23.5kPa
C.102.4kPa
D.123.5kPa
参考答案:D
绝对压强要计及液面大气压强P=P0+ρgh,P0=100kPa。代入题设数据后有:P'=1000kPa+0.8X9.8X3kPa=123.52kPa
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