Proton Definition and 813 Threads

Is there a set wavelength for photons produced from antimatter reacting its matter equivalent, and if there is, what wavelength does a proton and antiproton reacting create?

If we shoot a single low energy proton directly into the path of a single low energy electron, both being truly free in space, what theory describes the change in the spatial distribution of the free electron as it changes from a "focused" point-like particle into a "cloud-like" point particle...

if the reason electron microscopes work so effectively is because of the electrons small wavelength, why not use a proton (or neutron) microscope instead? a proton's wavelength is about 10,000 times smaller than an electrons...

Q: What is the minimum amount of energy necessary to remove a proton from the nucleus of a 42-Ca atom, thereby converting it into a 41-K atom? The former has a mass of 41.958618 u, the latter 40.961825 u, and the hydrogen atom has a mass of 1.007825 u. My answer: 42-Ca --> 41-K + 1-H...

QFT states that all forces are due to the exchange of virtual particles, I'm interested in photons and their role in the EM force. I was wondering what the maximum time allowed for existence of an exchange photon is when it's emmitted from a proton in the nucleus of an atom. I'm thinkin' that...

for the following question: In its own frame of reference, a proton takes 5min to cross the Milky Way galaxy, which is about 10^5 light-years in diameter. What is the approximate energy of the proton in electronvolts? my problem: v*5*60=(10^5)*3*(10^8)*[1-(v^2/c^2)] however, i can't...

Speed of a proton? i just don't know where to start with this? do i have to go back to basic physics?? i tried using the charge of the single proton to find the force of the electric field, and then with that force find an acceleration maybe? I am way confused A uniform electric field...

A proton (m = 1.67 x 10^-27 kg) is suspended at rest in a uniform electric field E. Take into account gravity at the Earth's surface, and determine E. I did this problem already but I'm not sure if it's correct... I used the equation: E = F / q = ma/e to get an answer of 1.02 x 10 ^-7...

hi, well i haven't got anything good on "gravitational behavior of proton and antiproton". i want it's recent journals and recent experimental work specifically. if u have any clue.then help me.i need it urgently.

hello friends, i want to know recent experimental works,journals on the topic "gravitational behavior of proton and antiproton. bye

A proton is on the x-axis at x= 1.6nm. An electron is on the y-axis at y=0.85nm. Find the net force the two exert on a helium nucleus (charge + 2e) at the orgin. there's a solution from the book, but i don't really understand it: k = 9X10^9 N*m^2 and e=1.6*10^-19 Coulomb force of the...

Hi, The mass of a bound system of quarks (e.g. proton) is larger than the mass of its constituents. You could say this is because the mass of the system corresponds to the energy in the color field, which is larger when the quarks are closer (even if the force is weaker then). For a bound...

Through random chance, I decided one day that I would build a proton accelerator. I understand the concepts of the physics that are involved well enough, but the actual construction is a bit of a mystery. There is a surprising number of rescources on the construction, but they mostly involve...

Why do proton and anti-proton annihilation can produce extra pions, in addition to the photons; whereas the electron and positron interaction only gives photons?

From the Alchemist Newsletter (Chemweb.com) An international team of researchers has produced a new isotope of zinc, zinc-54, which they say undergoes the rare process of two-proton decay. The research carried out by Bertram Blank of the CENBG laboratory in France and colleagues could shed...

I am studying Physics, which I can usually understand, but the chapter on Electricity is totally confusing to me. Can anyone help with this question: At different times, a proton and electron are placed equidistant from a point charge. How do the magnitudes and directions of the forces...

i've been stuck on this question all day..i don't know what to do Design a test to determine whether the charges on an electron and a proton are exactly equal? any help would be appreciated

Hi mates. I was doing a practice exam and I came across an interesting question. Calculate the work done accelerating a proton to a speed of 6.00*10^7 ms^-1 from rest. Proton mass = 1.67*10^-27 How would I go about solving it?

A proton, initially at rest, is accelerated from plate A to plate B, and acquires 1.92 * 10-17 J of kinetic energy. i. Which plate is positive and which is negative? ii. What is the potential difference? iii. Sketch the correct direction of E between the plates. Does the proton move with...

a proton is given a radius...i think its ~10e-15 since a proton is uud is this "radius" like [1]a electron orbital density cloud that is said to be in atoms...that is to say that its a bounding volume(ie in computer geometry) or [2]an energy barrier on the uud of this radius size? Or [3]there...

Hey guys, I know this is basic nuclear physics but I've forgotten how to do it. Given the atomic mass of Oxygen 16 (8p 8n), Oxygen 15(7n 8p) and Nitrogen 15(8n 7p), having found the average energy binding energy per nucleon (i think i have it right) find how much energy is required to remove...

Hi, I'm wondering how do we detect protons, and wat sort of detectors are used for this? Thanks

For some reason I don't feel like I was given all of the information on this question: A proton at rest is struck by a photon in a Compton collision. If the recoil kinetic energy of the proton is 4.5 MeV, what is the minimum energy of the incident photon (in MeV)? (Take the mass of the proton...

Sorry if this question has been answered already; I've searched, but couldn't find an answer or discussion. Question: If these charges are precisely equal, doesn't that imply that these particles are somehow related? IE, they were created from the same source particle, a particle that had a...

For a proton moving in the direction of the electric field a. its potential energy increases and its electric potential decreases b. its potential energy increases and its electric potential increases c. its potential energy decreases and it electric potential increases d. its potential...

Why doesn’t the Electron crash into the proton?? We know in an H atom the e- is attracted to the + charge of the proton. And it wants to get down to the "0 level" orbit. But what makes that level zero – or why does e- stop going down? Is there another force that counteracts the force of...

An electron starting from rest acquires 6.3keV of KE in moving from point A to point B. How much KE would a proton acquire, starting from rest at B and moving to point A? The answer is 6.3keV. I don't understand why they have the same kinetic energy. Is it becasue proton has more mass and...

I have no idea what formulas I'm supposed to use here, or possibly how to use them... any help would be great... Protons are projected with an initial speed vi = 9.73 103 m/s into a region where a uniform electric field E = (-720 j) N/C is present, as shown in Figure P23.49. The protons are...

Is it possible that the magnetic field of the proton is strong enough to force the electron to stay away from the proton? Do neutrons exert more magnetic force than protons?

A neutron at rest in the laboratory spontaneously decays into a proton, an electron, and a small essentially massless particle called a neutrino. Calculate the kinetic energy of the proton and the electron in each of the following cases: a) the neutrino has no kinetic energy b) the neutrino...

some theorist predicts proton can decay, since the decay of proton does not violate any fundemantal conservation law. My question is, could neutrino decay? How come I have never heard of anyone say neutrino could decay?

Hello, and thank you for your existence. I have been reading posts since the beginning of last semester. I must take physics as a degree requirement, and I have in the past had a lot of trouble with understanding the concepts of physics, or really I have more trouble trying to understand how...

wat is the mass of a proton?

A proton traveling at v= 1.0*10^5 m/s enters the gap btwn the plates of a 2.0-cm-wide parallel-plate capacitor. The surface charge densities on the plates are +-1.0*10^6 C/m2. How far has the proton been deflected sideways when it reaches the far edge of the capacitor? I figured that the...

Hi, The other day I was reading and the article I was reading mentioned positive current AKA proton current. ( Can't remember if it was a periodical or Quantum mechanics book...) Would this be the same as normal electron current? How would you create a potential diffrence if not the same...

We all know that magnetic fields come from moving charge or electron spin. However if it were possible to have protons as a moving charge in a wire does that cause a B field? At first I thought that it obviously should but then I thought about how accelerating electrons emit EM waves...

what is the end result when you break a proton down? I know that the charge is called a positron but what is the other half of the proton called?

In all situations (that I can think of) of particles relaxing from an excited state to their ground state, the direction of the resultant photons is isotropic. In magnetic resonance imaging (MRI) the excited protons are all in the -Z direction (+ some thermal motion). Will this have any bearing...

Sorry if the question is too stupid, but, How about receiving an impact of a proton (or electron, with less mass) fired from a particle accelerator at just below c? What will be the consecuencies in my body?

Little task : The great unification theory says that there is a very little probability that the proton will disintegrate for meson pi0 and positron (e+) . In one of the experiments ,checking this theory, there were 3300 tons of water obserwed using very sensible gear , the gear can...

I recently saw posts indicating that the SM does not have baryon and lepton number as exact symmetries, and in fact allows protons to decay, but with much smaller probabilities than GUT's. What is the mechanism by which such decays can occur (is it non-perturbative?), and what order of magnitude...

A proton of mass m undergoes a head-on elastic collision with a stationary carbon nucleus of mass 12×m. The initial velocity of the proton is 790 m/s in the positive x direction. Find the velocity of the center of mass of the system. I am really confused as to how to find the 'velocity of...

Hi, can someone remind me why should we expect a proton to decay? The last I heard, people put detectors around stored protons and expected some of them to undergo spontaneous decay, but nothing was ever detected, suggesting that the half-life of protons was longer than measurable time scales...

isn't a neutron more massive thatn a proton?

Do protons also exist as "proton waves" similar to the "electron waves"? Akira Tonomura has written a book called "The Quantum World Unveiled by Electron Waves" published in 1998 by World Scientific. In his book, he explains that in 1955 G. Moellenstedt and H. Dueker of Tuebingen University in...

When a beam of electrons (near relativistic or non-rel.) intersects with a beam of protons or a "fixed" proton target, what percentage of the electrons tunnel through the proton(s) or is there an absence of electrons on the exact opposite side (the backside) of the proton? This question is a...

I hear about a process called DVCS ("Deeply Virtual Compton Scattering") which should allow access to new distributions of parton called "generalized" distributions. Does someone know what's new about those "GPD" ? DVCS at JLab Hall-A

what is the difference between electron volts and proton volts?

is proton volt = electron volt? if yes then why? even if proton is 1840 times massive then electron and eV Is work done in carrying an electron from one potentail difference to another when potentail differnece is 1 V.

Why is the half-life of a proton, what it is? Can any branch of Mathematics or Physics explain it or predict it. I have asked myself these very same questions many times before. We are closer to finding, a tachyon than a proton-decay. Not that I am complaining since proton decay...