Neutral Definition and 338 Threads

Hello, Homework Statement What evidence do we have to support the assertion that the universe is electrically neutral on large scales? Homework Equations The Attempt at a Solution I know that gravity is the dominant force on large scales but what kind of evidence can we give...

First, I want to understand something. Everything I look at suggests that the ionization energy of an atom or ion is suppose to be the energy needed to remove the 'outermost electron'- which I find troubling conceptually, since they also refer to this as the one with the highest energy. Wouldn't...

Hi Consider a symmetrical beam, where as we know the Neutral Axis (NA) would be at the Geometric Center. If that beam was simply supported at both ends, there would be equal tension and compression to ensure that beam was in equilibrium. Now if we applied a vertical load, downwards, in...

Hi all, I'm having trouble understanding the short lifetime on the neutral pion. I understand that in the residual strong interaction between nucleons, the range of the virtual pion is limited by Heisenberg's uncertainty relation for energy, which thus limits its lifetime. I don't...

Hi, We were told in a very-elementary elementary particles course, that a neutral current event was first observed in the following process: \bar{\nu}_\mu + n \longrightarrow \bar{\nu}_\mu + X were X is "something other than muon" (n was a neutron). I thought about it, and I don't know how X...

How is it possible to have a pion that is made up of a linear combination of quarks? I mean, what are the physical constituents of the neutral pion? is it uubar or ddbar? Or does the linear combination mean that there is a 50 50 chance of a neutral pion being a made of uubar and ddbar?

Homework Statement When a positively charged conductor touches a neutral conductor, the neutral conductor will (A) Gain protons (B) Gain electrons (C) Lose protons (D) Lose electrons (E) Stay neutral Homework Equations The Attempt at a Solution You know how when two different charged...

If SUSY particles existed, is it possible for detectors to pick up on neutral super-partner particles? or would they pass the detector like neutrinos?

One division of the worlds population can be that one is either religious or nonreligious, but nonreligious is thus defined by the absence of something else, which is perhaps not the most politically correct statement. Another example where this have been applied to some extent is in...

Last question out of all the ones I've done has got me 100% stumped, went and asked the tutor and he confessed he has not coverd this at all but desided to leave it into the practice questions, so wondering if anyone here might be able to explain how this works. Homework Statement An...

i was thinking this for few days suppose glouds of neutral particles ne (m=0,5Mev) exists in galaxys halo. ne would easily decay to electron or positron near atoms nucleus or if its disturbed some way. (so it wouldn't be found in high energy lab) - ne could be produced only by direct pair...

How do I calculate Electric forces when objects are dangling from insulated wire. For example Neutral metal sphere A, of mass 0.10kg hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q, is brough into contact with the sphere A. The spheres repel and stelle...

Hi, I really want to know if there is a way to do detection whenever wire been reversed between Life and Neutral. Any opinion guys?:smile:

What is the difference between an atom and an ion? Ion has net electric charge. So it shows electric property. It acts like a small charged ball. What about an atom? Does it behave as a neutral object? Atom has equal number of protons and electrons bind together in the space. For this it is...

I have a question involving the measure of segments If m is a point inside a triangle ABC how could we prove that segment BM+CM < AB+AC. I am trying to use the Triangle Inequality Theorem (If A, B, C are three non-collinear points then AC < AB+BC) but I am stuck. Should I prove by...

hi can anybody tell me what would happen if i took apart a computer power supply. connected the Earth wire to the neutral wire. reassembled the power supply and connected it to an un earthed outlet having only live and neutral. (the two pin outlet) :confused:

Do you think that CNN is a reliable and neutral source? Is their covering balanced and independent? Can they be trusted?

How are neutral elementary particles accelerated? Is it actually practical as of yet, or is there a way we can do so in the future?

hi I am having trouble with finding the neutral axis and second moment of a T-beam. here are the measurements of the beam: http://img354.imageshack.us/img354/8648/beam6xl.jpg i understand to find the neutral axis you divide the beam into 2 rectangles but iam having problem finding the...

I know there is a certain lady that is ace at car diy on this forum, but how many know their lives from neutral ?

Hey, simple question, can't find an answer anywhere in my books. Why does bromine not have neutral polar charge? When its a symetrical molecule? Ta

Neutral Substance Monism -- Any Modeling Potential? The purpose of this thread is to ask what potential, if any, monism has for helping to model the nature of the universe, and for filling in certain gaps which we have no satisfactory answers for. Monism is the belief that the basis of all...

Hiya I'm revising for an Aerospace Dynamics Exam... I've hunted high and low for a couple of quick definitions but can't find any! How do i define the neutral point and the static margin of a wing? Any help/suggestions of where to look gratefully recieved! Thanks Phiska

The electromagnetic neutral pion decay is a three-point interaction: it decays into two virtual and charged Kaons or Protons, of which one then radiates a photon and then annihalates with the other to produce a second photon. (Obviously, a neutral particle cannot radiate photons directly)...

First of all, many books assume first that K_S and K_L are CP eigenstates. They then tell that by observation that cannot be true. Is that relevant to the CP violation? Why don't the authors just tell that K_L is a mixed state with only a small amount of CP=+1 eigenstate? Second, observing...

Hi first time user here. I was hoping someone could please help me with the following question: A moving neutral pion is observed to decay into 2 photons each with energy 80MeV, there being an angle 120deg between their trajectories.Calc i)The total energy of the meson ii)The momentum of...

I want to neutralize hydrogen sulfide with a chemical compound that is not harmful to a human. It is acidic, right? So I'd need a basic compound, perhaps a salt or a hydroxide? Any input?

Why don't neutral particles leave tracks in the bubble chamber? How is the bubble formed, is it condensation around ionised hydrogen, or around the particles?

Does a netural object experience a net force in an electric field? I don't quite understand the question. Can somebody draw a picture based on the description?

Because the charges on the electron and proton have the same absolute value, atoms are electrically neutral. Suppose this were not exactly true, and the absolute charge of the electron were less than the charge of the proton by (1.50e-5)e. now its a 4 part question, i think i can do the...

There are 2 long wires A and B, placed 10cm apart. The currents in 2 wires are the same, 0.3A downwards. Where is the neutral point, how far is it from wire A?

Will the following if dissolved in water make it Acidic, Basic, or nuetral? NaBr - Nuetral, b/c there is no proton donor or acceptor?? NH4Cl - This is a proton donor so it will make solution basic? (Ch3)4NCl - This is an electron acceptor so it will make solution basic? CH3CO2Na -...

Neutron Stars: For neutron stars, pressure is an elastic property, density is an inertial property. \rho_n = 2.294*10^{17} kg*m^{-3} - Neutronium Density Radial solution for spherically symmetric 1 solar mass pure Neutronium Neutron Star: r_n = \sqrt[3]{\frac{3M_\odot}{4 \pi \rho_n}}...

An electron which is decelerated emits a photon (Bremsstrahlung). When neutral hydrogen is formed putting together one proton and one electron (a free electron is bound by a proton), does the electron decelerate and does it emit a photon? Thanks.

This law neither I can prove right nor you can prove wrong. This law leaves as trully neutral. The law is:"Displacement always takes the direction of the force causing it" It's the compromise between Newton 1 and Newton 2.

We have a netural balloon and the question wants to know what it's charge is after 19000 electrons have been removed. Wouldn't the charge remain the same since the object wasn't charged in the first place?

You have a neutral balloon What is its charge after 13000 electrons have been removed from it? I know you have to use, q=ne but I don't know what to plug in for n

I have seen a few references to neutral particle accelerators, anybody know how they work? For example, how would it be possible to accelerate a neutron to near-c velocity?