Mathematical Problem (59)
littlewriterclose-ish to belfast, UK17 Threads 1,007 Postsi can't do it! you defo need more info! (or else im just wrong lol)
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Again, a firearm analogy: Without out knowing the pressure behind the mass displacement, then the only way to determine velocity (as in muzzle velocity with out knowing pressures developed by a specific powder/propellant charge) would be with a chronometer. Or at least that would be the easiest way...
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Well we can assume the pressure at the end of the pipe is the pressure at sea level P=1 atm.
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no it would be 1 atmosphere over dispacement i think.........hell i did my degree over 20 years ago........wish i handnt looked out the windows in cals n science lol..............
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Well let me tell you something. The only way to calculate the velocity is to know the pressure diffrence between the start of the pipe and the end of the pipe. The pressure difference is the driving force...Then you can write an energy conservation equation and find the velocity at the end of the pipe.
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lets just take the pressure hypertheically at one(1)bar n get a ball park
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True, but that still doesn't give us enough information.
I've been building and tinkering with guns my whole life and specialize in muzzleloaders and this is nothing more than a "steam gun." Or at least it can thought of in those terms. (Helps my feeble brain to associate with things I know about. lol) And without knowing the initial head pressure, i.e., propellant force, we cannot safely and surely conclude a velocity without a chronometer.
I've been building and tinkering with guns my whole life and specialize in muzzleloaders and this is nothing more than a "steam gun." Or at least it can thought of in those terms. (Helps my feeble brain to associate with things I know about. lol) And without knowing the initial head pressure, i.e., propellant force, we cannot safely and surely conclude a velocity without a chronometer.
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Good Lord! I just realized that it's 7:20 A.M. here and I'm thinking about things I don't usually consider before lunch!
Y'all are making my brain hurt! I'm a country boy! I'm not SUPPOSED to be smart this early in the morning!
Y'all are making my brain hurt! I'm a country boy! I'm not SUPPOSED to be smart this early in the morning!
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OK. The Bernoulli equation is
[P1/d +u1^2/2+gz1=P2/d+u2^2/2+gz2
P1 is the pressure at the start of the pipe, u1 is the initial velocity, g is the accelaration of gravity, z1 and z2 are the heights of the start and the end of the pipe from the ground and u2 is the velocity you ask.
[P1/d +u1^2/2+gz1=P2/d+u2^2/2+gz2
P1 is the pressure at the start of the pipe, u1 is the initial velocity, g is the accelaration of gravity, z1 and z2 are the heights of the start and the end of the pipe from the ground and u2 is the velocity you ask.
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Unless you need help with Taxation, VAT or any other Accountancy issues, i'm stumped!
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Ok, now it's starting to make sense! The last time I accidently listened to U2, I ran from the room at approximately 60 mph.
*Politely bows out in search of more mundane problems like "Dang! I wonder if there's any coffee left? I sure hope it ain't steamin'!"
*Politely bows out in search of more mundane problems like "Dang! I wonder if there's any coffee left? I sure hope it ain't steamin'!"
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just remembered why i hated physics!
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Women!!!!!!
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I was in the jumping out of the window class for Physics!
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And d is the desnity of the steam.
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don't "woman" me!!!
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i was the only female in my physics class! all the others quit after about a month! lol
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And "thick" is the density of my head at 07:30 and yes! My coffee is steaming! I wonder how the garden is doing? (And I still don't like listening to U2! )
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