Originally Posted by Snatch Adams
no, its V=IR
no, its V=IR
i could have sworn it was:
K = K*+IP+DRP+LP+MRP
U^ra=DuM@55
96% ya they are s***y questions
Nick
'76 F250 High Boy
'87 Wrangler
funnyish
My question is, can there actually be a negative pressure? Once there is nothing in a space, you can't get any more out of it, correct? So if there is no negative pressures, only 0 or more, than even in a vacuum there is some pressure.
My bitch better have my money...
Through rain, sleet, or snow...
My whore better have my money...
Not half, not some, but all my cash...
'Cause if she don't,
I'm gonna put my foot in her ass.
pretty sure its a lost cause, ed. kinda like trying to tell democrats that abortion is murder, guns are not evil and islamofacists want to kill all of us
Negative ghost rider I give that a 6 out of 10 on the scale of funny. I chuckled.
I am just trying to figure it out myself. I never did get into any of the physics classes other than what I learned in hikeskool and just general knowledge I have picked up over the years. I think it is an interesting subject.
You are right on the libs being so hard headed though. Like talking to a brick wall sometimes. It just makes you want to go club a baby seal.
My bitch better have my money...
Through rain, sleet, or snow...
My whore better have my money...
Not half, not some, but all my cash...
'Cause if she don't,
I'm gonna put my foot in her ass.
And just so nobody thinks I am a total a$$hole..
My bitch better have my money...
Through rain, sleet, or snow...
My whore better have my money...
Not half, not some, but all my cash...
'Cause if she don't,
I'm gonna put my foot in her ass.
Ed that's the definition of vacuum. Negative pressure. I don't think it's like temperature, where absolute zero is defined by the point at which air molecules are no longer moving, and 0 C and 0 F are just human-dictated baselines. The baseline of pressure/vacuum is kind of the same way, as 0 is dictated by ambient conditions/14.7 psi/conditions at sea level at STP.
so here's another way of thinking about the original question: If you take the spark plug out of cylinder #1 at TDC, put a wrench on the crank and turn it a quarter turn, would you say "aw dang that there feels like a lack of atmospheric pressure," or would you say "that feels like vacuum?" Also, does a carb work just the same with atmospheric pressure on all sides (ie without a vacuum behind it) as it does with the vacuum on the manifold?
I understand that in an academic, "frictionless surface" type environment this question is probably fine. The cylinder appears out of nowhere and has no pressure in it. Atmospheric pressure might fill the cylinder. However, this test specifies at the beginning that it was designed to test the ability of tractor mechanics to learn/understand stuff. Vacuum created by increased volume in the cylinder definitely achieves that end better than "atmospheric pressure"
and for you douchebags who want to pick at my formula, it was Boyles' law, not the universal gas law, because n and r are constant in this case. John you should know that since you fancy yourself a diver.
eric it is defined as 0,.there is absolute pressure where 0 is nothing, and gauge pressure, which is defined by 0 = ambient pressure.
...
i havent had a tank on my back in 5 years. i wish that werent the case.
14.7 is zero gauge psi. 0psi is 0 absolute psi is 0 psi.
i dont think boyles law takes temp into account. isnt it pv=pv
carbs work just mine with no manifold vaccuum. carbs work on bernoulli's principle. no manifold vacuum is ideal. thats max power since you have a full 14.7 psi pushing the intake charge into the cylinder.
so it's impossible to pull more vacuum than -14.7 psi at sea level?
at STP, yup
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