ممكن حل هذا السؤال بصورة اوضح بالعربي

[استاذ رحمن عزيز]

Negative pressure ( suction ) is to drain body cavities . In the drainage arrangement . the negative pressure supplied to the collection bottle is 100 mm Hg and the top end of the tube is 37 cm above the end negative pressure at the lower end of the tube . Pressure of 37 cm of water = file:///C:/Users/muhamed/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif \Net pressure = 100 mm Hg – 370 file:///C:/Users/muhamed/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif = 73 mm Hg 1 mm Hg = 1.3 x 103 dyn g / cm2 1 mm Hg = N/m2 1 Pa = 9.869 x 10-6 atm 1 atm = 1 atmosphere = 1.013 x 105 N/M2
= 1.013 x 105 Pa
1 cm Hg = 1.333 x 103 N/M2 = 1.316 x 10-2 atm 1 Pa = 7.501 x 10-4 cm Hg 1 atm = 76 cm Hg = 760 mm Hg