Where am I going wrong
Favorites|Homepage
Subscriptions | sitemap
HOME > > Where am I going wrong

Where am I going wrong

[From: ] [author: ] [Date: 12-04-13] [Hit: ]
org/9ihj14zir/S...2.3.Patm + ρwater*g*H = Pgas + ρoil*g*0.......
1. The problem statement, all variables and given/known data

Consider a manometer with a glass bulb (Pgas=88kPa) at one end and which is open to the atmosphere (P =101 kPa) at the other. The manometer has two liquids oil and water in it, as shown. If the oil has a density of 823 kg/m3 and water a density of 1.00x103 kg/m3 find the height of the water.

http://s16.postimage.org/9ihj14zir/S...3…

2. Relevant equations

P=pgh

3. The attempt at a solution

I keep deducing the equation to be;

Patm + ρwater*g*H = Pgas + ρoil*g*0.699m

Solving for H, I get 0.750m. The answer though, is 0.269m.

Where am I going wrong?

-
The question/diagram is wrong: the pressure in the bulb plus the pressure under 0.699m of oil is:
88,000 + (823 x 9.81 x 0.699)
= 93643 Pa
This is LESS than atmospheric pressure.
1
keywords: Where,going,wrong,am,Where am I going wrong
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .