你知道1毫米水等于多少pa吗
1\u6beb\u7c73\u6c34\u67f1\u7b49\u4e8e\u591a\u5c11\u5e15\u7531p=\u03c1gh\uff0cg=9.8m/s^2=9.8N/kg\uff0c\u53ef\u77e5\uff0c
1kPa=1000Pa=1000kg/m^3*g*h\uff0c
\u4ee3\u5165\u6570\u636e\u5f97h=0.102m\uff0c
\u56e0\u6b641\u5343\u5e15\u76f8\u5f53\u4e8e102\u6beb\u7c73\u6c34\u67f1\u3002 \u6240\u4ee5\u4e00\u6beb\u7c73\u6c34\u67f1=1/102\u5343\u5e15 \uff0c15\u6beb\u7c73\u6c34\u67f1\u7b49\u4e8e147\u5e15
1pa\u7b49\u4e8e0.1\u6beb\u7c73\u6c34\u67f1\u3002
\u89e3\uff1a\u6839\u636e\u538b\u5f3a\u516c\u5f0fP=F/S\u53ef\u63a8\u5bfc\u51fa
P=mg/S=\u03c1Sh*g/S=\u03c1gh\u3002
\u53c8\u6c34\u7684\u5bc6\u5ea6\u03c1=1g/cm^3\uff0c\u91cd\u529b\u5e38\u6570g=9.8N/kg\uff0c
\u90a3\u4e48\u5f53\u538b\u5f3aP=1Pa\u65f6\uff0c
\u6c34\u67f1\u9ad8\u5ea6h=P/(\u03c1g)
=1/(1*9.8)
=0.1mm
\u53731pa\u7b49\u4e8e0.1\u6beb\u7c73\u6c34\u67f1\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u538b\u5f3a\u5355\u4f4d\u53ca\u76f8\u4e92\u7684\u6362\u7b97
\uff081\uff09\u538b\u5f3a\u7684\u5355\u4f4d\u6709\u5146\u5e15\u3001\u5343\u5e15\u3001\u5e15\u3001\u5df4\u3001\u6beb\u7c73\u6c5e\u67f1(mmHg)\u4ee5\u53ca\u6807\u51c6\u5927\u6c14\u538b\u3002
\uff082\uff09\u538b\u5f3a\u5355\u4f4d\u7684\u6362\u7b97
1 MPa\uff08\u5146\u5e15\uff09=1000 kPa\uff08\u5343\u5e15\uff09=1000000 Pa\uff08\u5e15\uff09
1bar\uff08\u5df4\uff09=0.1MPa\uff08\u5146\u5e15\uff09=100000Pa\uff08\u5e15\uff09
1 atm\uff08\u6807\u51c6\u5927\u6c14\u538b\uff09=101325Pa
1 atm\uff08\u6807\u51c6\u5927\u6c14\u538b\uff09=760mmHg
2\u3001\u538b\u5f3a\u6d4b\u91cf\u5de5\u5177
\u6d4b\u91cf\u538b\u5f3a\u7684\u4eea\u5668\uff0c\u6700\u5e38\u89c1\u7684\u6709\u6c34\u94f6\u6c14\u538b\u8868\u548c\u7a7a\u76d2\u6c14\u538b\u8868\u4e24\u79cd\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u538b\u5f3a\u5355\u4f4d
1毫米水柱=9.80665Pa
1毫米水柱=9.80665Pa
你自己算
72mmhg是1标准大气压
0.98pa
P=1000X9.8X0.001=9.8pa
绛旓細1姣背姘寸瓑浜9.8pa,涓绫虫按绛変簬9.8KPA,涓绫虫按绛変簬0.1bar=0.1KF/MM
绛旓細鍗1mm姘存煴绛変簬9.8pa銆
绛旓細1姣背姘存煴=9.8甯 鎺ㄥ杩囩▼锛氱敱娑蹭綋鍘嬪己璁＄畻鍏紡P=蟻gh鍙煡锛氫唬鍏ュ父鏁板硷細蟻=1000kg/m^3锛実=9.8m/s^2=9.8N/kg锛屽垯锛1姣背姘存煴鍘嬪己涓猴細P=1000kg/m^3*9.8N/kg*0.001m=9.8N/m^2=9.8Pa
绛旓細1
绛旓細1姣背姹炴煴=133.28甯 娑蹭綋鍘嬪己鍏紡锛歅=蟻gH锛涘叾涓細蟻姹=13.6脳10³kg/m³锛実=9.8m/s²锛孒=1mm=0.001m锛涗唬鍏ヨ绠楋細P=13.6脳10³脳9.8脳0.001=133.28锛圥a锛
绛旓細1mm姘存煴=9.80665pa銆傚寲瀛︿腑鏇涓搴﹀皢鏍囧噯娓╁害鍜屽帇鍔涳紙STP锛夊畾涔変负0掳C锛273.15K锛夊強101.325kPa锛1atm锛夛紝浣1982骞磋捣IUPAC灏嗏滄爣鍑嗗帇鍔涒濋噸鏂板畾涔変负100 kPa銆1鏍囧噯澶ф皵鍘=760mm姹炴煴=76cm姹炴煴=1.01325脳10^5Pa=10.339m姘存煴銆1鏍囧噯澶ф皵鍘=101325 N/銕°傦紙鍦ㄨ绠椾腑閫氬父涓 1鏍囧噯澶ф皵鍘=1.01脳...
绛旓細29.4銆1姣背姘寸瓑浜9.8pa锛3姣背姘寸瓑浜29.4pa銆傛按鏄湴鐞冧笂鏈甯歌鐨勭墿璐ㄤ箣涓锛屾槸鍖呮嫭鏃犳満鍖栧悎銆佷汉绫诲湪鍐呮墍鏈夌敓鍛界敓瀛樼殑閲嶈璧勬簮锛屼篃鏄敓鐗╀綋鏈閲嶈鐨勭粍鎴愰儴鍒嗭紝姘村湪鐢熷懡婕斿寲涓捣鍒颁簡閲嶈浣滅敤锛屽畠鏄竴绉嶇嫮涔変笉鍙啀鐢燂紝骞夸箟鍙啀鐢熻祫婧愩
绛旓細琛鍘嬪崟浣嶆崲绠楀叕寮鏄1mmhg锛堟绫虫睘鏌憋級绛変簬0.133kpa锛堝崈甯曪級锛屼袱鑰呬箣闂村彲浜掔浉杞崲锛岃1kpa绛変簬1000pa锛屽洜姝1mmhg绛変簬133甯曘俻a鍗冲笗锛宮mhg鍗虫绫虫睘鏌憋紝浜岃呭潎涓哄帇寮虹殑鍗曚綅锛岀敱浜庝复搴婁笂澶氶噰鐢ㄧ數瀛愯鍘嬭鎴栬呮按閾惰鍘嬭锛宲a宸茬粡閫愭笎琚复搴婂純鐢紝鍏朵綑鍏紡涓猴細1鎵橈紙torr锛夌瓑浜133.322甯曪紙pa锛夛紝1姣背姘存煴锛...
绛旓細3. 100甯曟柉鍗★紙Pa锛夌害绛変簬1姣反锛鐩稿綋浜3/4姣背姹炴煴銆4. 绮剧‘鐨勬崲绠楀叧绯绘槸760姣背姹炴煴锛坢mHg锛夌瓑浜101325甯曟柉鍗★紙Pa锛夈5. mmHg涓嶵orr鏄瓑浠风殑锛岃繖涓や釜鍗曚綅閮戒笉鏄浗闄呭崟浣嶅埗锛圫I锛夌殑鎴愬憳銆6. 闄や簡鐢ㄤ簬娴嬮噺澶ф皵鍘嬶紝mmHg杩樼敤浜庢祴閲忛珮搴︾湡绌哄伐鑹恒佽鍘嬪拰鐪煎帇绛夐鍩熴7. 鍘嬪己鍗曚綅mmHg瀹氫箟涓哄湪鏍囧噯閲嶅姏...
绛旓細9.8039鍗冨笗 鐢眕=蟻gh,g=9.8m/s^2=9.8N/kg,鍙煡锛1kPa=1000Pa=1000kg/m^3*g*h 浠ｅ叆鏁版嵁寰梙=0.102m 鍥犳1鍗冨笗鐩稿綋浜102姣背姘存煴.鎵浠涓姣背姘存煴=1/102鍗冨笗 1绫虫按鏌绛変簬1000/102=9.8039鍗冨笗=9803.9甯
