Psi Definition and 162 Threads

Homework Statement for discrete basis vectors {{e_n}}, a state vector |psi> is represented by a column vector, with elements being psi_n = <e_n|psi>. When basis vectors correspond to those with continuous eigenvalues, vectors are represented by functions. Give such an example of a state...

Homework Statement The observable A is represented by operator A-hat. The eigenvectors of A-hat are |phi1> and |phi2> which are orthonormal. The corresponding eigenvalues are +1 and -1 respectively. The system is prepared in a state |psi> given by |psi>=(4/10)|phi1>+c|phi2> a) If the...

The customer's print calls out 250 ft-lbs mininum on a weld. There was a gage built some time ago... The weld is used to mend a cylindrical feature after forming/stamping the part. There is a bar inserted into the part (part is constrained with pins into a fixture). And the other end of the...

I have a 3 dimensional orbital-specfic electron density function ( |\psi(r)|2 ) for all relevant r values. How would I go about finding the corresponding \psi(r)? I know it would be something related to a Fourier transform, I'm just unsure about how to go about performing it in mathematica or...

I would like to make a pressure vessel with a pressure of about 9 bars/130.5 psi, that contains about 250 grams of water at about 175 degrees Celsius. My question is how big should the pressure vessel be.

Homework Statement What is the resulting PSI when the kinetic energy of 100 kg at 7 m/s is used to compress air into a 15cm x 15cm x 60cm tank? Homework Equations Kinetic energy K = 0.5mv^2 Boyle's Law PV = K The Attempt at a Solution .5 x 100 x 7^2 50 x 49 = 2450 joules...

I am trying to figure out the flow rate (gallons per minute) and PSI of the water just as it exits the top of the pipe. Is it possible to figure out these out given the information in the diagram?

the range of (psi) squared is ?? (psi) of the schrodinger's wave equation is displacement? ( or, what are it's SI units??) (psi) squared gives the "probability" of finding a particle in space..does this mean that, 0<= ((psi) sqaured) <=1 ??

As we learned in fluid mechanics, we can devise stream function psi when the flow is 2-D, incompressible. However, I cannot clearly explain why psi can be defined only for 2-D, mathematically or logically. Is there any way to explain this, more than just say that 'just as it is'?

I wonder and feel like knowing how the product of psi with its complex conjugate represents the Probability Density for the object to be there? how two (apparent) different concepts are linked that way?

Dear Forum-Community, Provided that I got offers from the Imperial College London for the Master Course "Qauntum Field and Fundamental Forces", from the University of Cambridge for "Master of Advanced Study" (Part III of the Mathematical Tripos) and from the Perimeter Institute of Theoretical...

This isn't anything course related but i was just curious, why do we use several units for pressure? Primarily PSI and Pascals? Theyre both units used to measure pressure, but why are 2 units used? What are they similarities and differences? and where are they used?(situations scenarios) and...

I have been "googling" to find the relationship between the above, and the answer has mostly been a resounding "NO". Maybe my question is not "CFM" vs "PSI", but that is the only way I know how to descibe my question. I will explain the scenario: I have air flowing at a constant speed...

Hi, Is it possible to calculate gasflow(cfm) given pressure(psi) and sound(dbuv). I am writing some software to report and track air leaks and the hardware the user will be using is the ultraprobe 9000. Thanks and I appreciate any information.

If I have an unlimited air supply with 800 PSI and fed through a 1' pipe how do I calculate the CFM

I wasn't sure exactly where I should have posted this but here I go... I was reading that Voltage is a measure of potential energy. With that same mind frame would it be correct to say that PSI is also a measure of potential energy? Specifically referring to the psi in an pneumatic line for...

I have an air compressor rated for 3.7 cfm @ 90 psi. what would the cfm be @ 40 psi? Is there a simple formula I can use?

Ok I should say up front I am not near as brilliant as you fine folks, I was a C student now I am a Dad that can't figure his 11 year olds homework out . I hope someone will be so kind as to help me lol. Scenario: We are going tuna fishing, so we need a live bait (anchovy) tank. This...

How do I convert gph to psi?... Here is the deal, we are testing a 24" pipe for leaks doing a pressure test. the pressure at the pipe in question is 185 psi, and it lost 4 psi. I have a chart showing the allowable loss in GPH, but I don't know how to convert to PSI. Since this was a test...

Is there anyway that a Ketone on a benzene ring could be reduced to a hydrocarbon with the use of H2, Pd/C, 45 psi ? I know that carbonyls on aromatic rings are able to be reduced to alcohols via this method but would be interested in if it is possible (more so then practical) to fully reduce to...

<p> and <p^2> for uniform "psi" Homework Statement What is <p> and <p^2> for state: \begin{array}{l} \psi (x) = {\rm{constant for x}} \in {\rm{[ - a,a]}} \\ \psi (x) = {\rm{0 for x}} \notin {\rm{[ - a,a]}} \\ \end{array} ...that is: a "psi" that is constant within...

Can anyone please show me how to look up Density of H20 @ 150 C & 600 psi pressure (Co2)... I found a water table which shows 916.69 kg/m^3 but it does not show anything @ pressure. Isnt density related to both pressure & temp.? What would be the difference in density if No gas was there...

psi --> pounds lifted? I have a very, very small air compressor that puts out 0.8 bar or 11.6 PSI. I would like to know how to compute if I were to put a plastic skin over the top of the output (like a balloon), how much weight could be lifted by the air compressor. I realize that part of...

1. The figure shows the probability density for an electron that has passed through an experimental apparatus. What is the probability that the electron will land in a 2.40×10−2-mm-wide strip at: I'm then asked the probability of finding a particle at various spots on the x-axis. We'll go...

At least physically, why must Psi be continuous? Sorry if this question has been asked before. Most of the things I read however just state that it is, & leave it at that.

Boiling Point H20 @ 600 psi? According to the psychometric chart boiling point of water @ 600 psi is 252 C. I have a chamber with water inside (in forms of weight measured drops). I am purging CO2 at 600 psi in the chamber. After am heating the chamber to 155 deg C expecting the water to...

Justification of ψ*ψdx as probability density of particle between x and x+dx using light's E-field and diffraction by slit. This isn't a homework problem, rather it was on the list of things to know for the exam. They don't really go over it in Griffiths Quantum Mechanics books. So are any...

ok guys I am an old guy that is useless at maths so i'd like your help. I have searched the net and this forum and i have found some formula but I am to thick to work it out even with an equation. https://www.physicsforums.com/showthread.php?t=117105 This isn't home work as i haven't been to...

just wonder if there any charts are available on marine species by depth and pref. location, esp. in depths with pressure between 60 and 150 PSI, or approx. over 100 feet

Hello, I am a tactical driving instructor and a precision/stunt driver. For more than 15 years I use high PSI tire inflation method on my family car, tactical training courses or stunt performance cars. Namely, if on the side wall of the tire manufacturer is indicating that maximum PSI 41...

Homework Statement Find the conjugate of \varphi=exp(-x^2/x_0^2) Homework Equations The Attempt at a Solution Isn't the conjugate \varphi*=exp(x^2/x_0^2)

Homework Statement I need to square the magnitude of psi for each of my integrals Homework Equations for x between 0 and a, \psi(x,0) = A(x/a), where A and a are constants The Attempt at a Solution So I take A(x/a) and square it since it is already positive. so A^2\ast(x^2/a^2) ...

I hope I am asking this in the right forum. Lets say you have a simple hand pump, similar to a bicycle pump, and you exert X amount of force on the handle. How do you calculate the resulting air pressure it creates out of the small valve at the end? Obviously friction between the O-ring...

My question is pretty easy (i think). I have a wavefcn PSI defined at t=0. The PSI is a mix of several eigenstates. Let's say PHI(x,0)=C1phi1 + C2 phi3. Now C1 and C2 are given to me, so I am wondering is this wavefcn. already normalized, or do i have to normalize it despite definite C1 and C2...

a steel bar 1 " sauare 6 ' long is to be used as a column.ends are free to rotate put may not be displaced stress is limited to 30,000 psi. i believe my teacher expect conform code AISC.

Homework Statement Trying to calculate changes in psi and temperature with a known change of volume. One cubic foot of air(14.7 psi) compressed to one tenth its original volume. 10:1 compression ratio. Starting temp=70° F or 294° K Homework Equations Don't know the equasion. That is...

I don't know if this is the right section, and I am not entirely sure on how to word this- Hoepfully I can make this clear enough however: If we know the volume of a setup, for a simple example let's just say a small straight tube. If we know the psi inside this tube, is it possible to...

Internal combustion engines, Ram Jet, Turban engines etc. require that the air fuel mix be compressed. Is the compression of the air fuel mixture required to give a higher or more efficient energy output? Otherwise if the air fuel mix were at a static or ambient pressure vs. compressed would the...

Hey. As the title dipicts, is there any relationship between CFM and PSI, linear or non-linear? Any mathamatical relationship either? CFM (cubic feet per minute) is a volume over time, and PSI (lbs per square inch) is a weight essentially over an area. So I take it, there's no real way to...

I am seeking a general answer relative to boat speed and psi effect on a transducer. I understand many variables affect this, ie, salinity, current, etc. Assuming a transducer mounted on the back of a boat hangs below into the water 1/4", water forces increase against this object as boat speed...

hello physics experts! i have a simple question about PSI and CFM and would like your input. context of the question: a car's turbocharger is essentially an air compressor that forces positive "boost" into the intake manifold. now a great debate among car enthusiasts is why a small...

I am currently getting setting up a project where we will be abrasive blasting 48" dia steel pipe in 80' lenghts utilizing robotic equipment producing 1600 CFM @ 160 PSI. We are endevouring to identify the CFM requirements for our dust collection system which will be required at one end of the...

Homework Statement Calculate d\left\langle p\right\rangle/dt. Answer: Homework Equations d\left\langle p\right\rangle/dt = \left\langle -\partial V / \partial x\right\rangle The Attempt at a Solution I've been through the rigor down to getting \left\langle -\partial V / \partial...

i am confused why you need to write psi-bar multiplied by psi (where psi-bar is the hermitian conjugate of psi multiplied by y_0 (dirac matrix or gamma matrix)) instead of the h.c. psi multiplied by psi in order for it to transform as a lorentz scalar. Note: h.c. means hermitian conjugate

Some numbers seem a little weird to me, I just want to get a second or third opinion on it. Problem: How much Weight does it take to increase the PSI in a Cylinder filled with water by 10 PSI, 100 PSI, etc? Assuming that there is a 1 ft tall Cylinder with 6 inches of water in it, with the...

Some friends and I were moving a 30 gallon air compressor and after we moved it decided it would have been better to let the air out first. I would like to know how much more the tank weighs with it full of air at 100 PSI. Is there a simple formula to use to make this calculation? Thanks...

If I have a cylinder with water at 50 PSI, is there any way to calculate how much water it would take to raise the pressure to 150 PSI?

Homework Statement If you take a cup of water upside down on top of water in a bowl. The water doesn't flow out because of atmospheric force. So my question is, is the atmospheric pressure of 14.7psi transferred to the water in the cup. So is the water pressure inside the cup then 14.7 psi...

Has anyone shopped for an air compressor lately? It's amazing how far retailers will go in providing exaggerated/skewd/completely misleading info on these things. Due to this, I have a question: -Is there a simple formula for working with cubic feet per minute (cfm) and PSI? Ex: If you...

USA Military paper about “Psi phenomenon”... Paradigm Shift? Hi everybody, The USA Military has recently (year 2004) approved for public release and distribution a very interesting and controversial research document titled “Teleportation Physics Study.” In this document they talk about...