Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
lilMissMindset
Group Title
help me with some manometers here please.
The fluid in a manometer tube is 40% water and 60% alcohol (specific gravity = 0.8). What is the manometer fluid height difference if a 50kPa pressure difference is applied across the two ends of manometer?
 one year ago
 one year ago
lilMissMindset Group Title
help me with some manometers here please. The fluid in a manometer tube is 40% water and 60% alcohol (specific gravity = 0.8). What is the manometer fluid height difference if a 50kPa pressure difference is applied across the two ends of manometer?
 one year ago
 one year ago

This Question is Open

Diwakar Group TitleBest ResponseYou've already chosen the best response.1
I think alcohol and water are miscible (never tried though!). So we have to use average density of liquid.
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
that is what I am thinking as well. but my classmates insist that there is a height difference here and we can assume the two fluids to be immiscible.
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
if they are miscible, their height will be the same at both sides right?
 one year ago

Diwakar Group TitleBest ResponseYou've already chosen the best response.1
It would be complicated if they were immiscible. Also in that case we will have to know on which side pressure was applied  where there is alcohol on top or where there is water on top.
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
we can say that the water is going to at the bottom since the water is more dense than alcohol right?
 one year ago

Diwakar Group TitleBest ResponseYou've already chosen the best response.1
dw:1373287012937:dw
 one year ago

Diwakar Group TitleBest ResponseYou've already chosen the best response.1
\[avg \ density, \ d = (\rho _{w} * n _{w}+\rho_{a}*n_{a}) / 100\] where \( \rho_{w}\) is density of water = 1000 kg/\(m^{3}\) \(n_{w}\) is % of water present = 40% \(\rho_{a}\) = density of alcohol = 0.8 \(\rho_{w}\) = 800kg/m\(^{3}\) \(n_{a}\) = % of alcohol = 60% You will be able to calculate h from the formula i showed in the drawing above after using this value of d.
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
ok, ill try this one. lots of thanks.
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
i cant see the whole version of the picture, can u type the written words here?
 one year ago

Diwakar Group TitleBest ResponseYou've already chosen the best response.1
Strange ,i can see it ! I have written (exact words) : "See that 'h' height of liquid will have to balance 50kPa pressure So 50 kPa= hdg where 'd' i average density of 40% water and 60% alcohol"
 one year ago

lilMissMindset Group TitleBest ResponseYou've already chosen the best response.0
maybe my screen is not wide enough. thanks a lot again. :)
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.