I'm in the unfortunate situation of having a physics professor that does not teach anything, and expects us to solve problems without any knowledge of phyics. Here is a question I need answered and need to know how to do it, but I just can't grasp it. Any help is appreciated!!
Your science teacher has assigned you the task of building a water barometer. You've learned that the pressure of the atmosphere can vary by as much as 8.00 % from 1 standard atmosphere as the weather changes.
1.) What minimum height must your barometer have?
2.) The barometric pressure is a low of 29.52 inches. What is the height of the water in your barometer?
2007-04-12 10:45:25 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
1) 1 standard atmosphere = 29.921 inches of mercury.
If the barometric pressure can vary by 8%, you would need 29.921 x 1.08 = 32.315 inches of mecury minimum which equals 32.315 x 849 lb per cu ft for mercury/62.4 lb per cu ft for water = 439.67 inches of water.
2) You need 29.52 inches of mercury x 849 lb per cu.ft. for mercury/62.4 lb per cu.ft. for water = 401.64 inches of water.
2007-04-12 12:04:42 · answer #1 · answered by gatorbait 7 · 0⤊ 0⤋