Proton Definition and 813 Threads

Hi why scientists picked up proton for LHC?

Homework Statement A proton with the speed 3.7*10^6 m/s is moving in a magnetic field, parallel to the field. The magnetic B-force is 0.45T. a)Draw a figure that shows the proton in the magnetic field. Indicate the direction of the proton's velocity, the direction of the magnetic field and...

Homework Statement A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 34.0 cm. The spherical shell carries charge with a uniform density of -2.26 µC/m3. A proton moves in a circular orbit just outside the...

Homework Statement You want to create an electric field = < 0, 5e4,0 > N/C at location < 0, 0, 0>. Where would you place a proton to produce this field at the origin? Homework Equations \vec E = q\hat{r} / 4\pi\varepsilon r^2 The Attempt at a Solution I'm not sure how to treat...

how to turn a proton into neutron by e+p-->n? Just as the topic said,is it possible to turn a proton into a neutron by forcing a electron into the proton?If it's possible,what condition is it required?

A proton moves in a circular path perpendicular to a 4.30 T. magnetic field. The radius of its path is 7.5 cm. Calculate the energy of the proton in electron-volts. I'm not sure which equation to use. I tried using m=rqB/v and found the velocity. However, I'm not sure how to relate that...

A proton moving freely in a circular path perpendicular to a constant magnetic field takes 1.50 µs to complete one revolution. Determine the magnitude of the magnetic field. I know that a proton has a charge of 1.6x10^-19 and a mass of 1.67x10^-27. Those are the only two relevant facts I...

don't all atoms decay? don't even protons decay?

Homework Statement Moving Proton in an Electric Field A proton with kinetic energy of 2.95 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density of σ = +7.50 μC/m2. What is the magnitude of the force on the proton? How much work must the electric...

Homework Statement A proton, initially at rest, is accelerated through an electric potential difference of 500V. What is the speed of the proton? Homework Equations V=k(q/r) Solving for r: r=k(q/v) v=d/t known charge of a proton: 1.6E-19C known value of k: 9E9Nm^2/C2 The...

I often see the charge radius of a proton at .8 * 10^-15m. An acquaintance on a different forum said he would use, if asked to determine the radius of a nucleus, to be: R = R0 * A^(1/3) where R0 = 1.2 * 10 ^ -15 to 1.5 * 10 ^ -15 and A is number of nucleons. He cited the sources...

An isolated neutron, changes to a proton within 15 minutes by one of the down quarks becoming an up quark. Why does the change need to include the intermediate step of the heavy W boson? Where did all the W boson mass come from and where did it go? jal

Homework Statement when protons traveling north in a horizontal plane enter a region of uniform magnetic field of 0.8Teslas in the downward direction, they are deflected into a horizontal circle of radius 0.2 meters. what is the magnitude and direction of a uniform electric field applied...

You can calculate that the proton and neutron in a deuteron spend quite some time so far away from each other, that they are outside each others force range. Why doesn't the deuteron break up? Is it because of the binding energy?

Iam a maths student so forgive my lack of knowledge, for a project Iam doing I need some information.. Is there such thing as a proton filter? eg a device that could take in as an input different types of gas (like oxygen) and output just protons? if there isn't something like this, is a...

Reading ahead. Don't understand components. Question: A uniform electric field is exerting a force of 3.2X10^-18 Nt u on a proton located at the west end of an east/west directed horizontal rod. r(proton)=-0.5 m e. The torque (r X F) exerted on the rod caused by the interaction of this...

[SOLVED] Relativistic kinetic energy and proton collisions Homework Statement Find the minimum proton kinetic energy required to produce an antiproton in the reaction P+P\rightarrow P+P+P+\overline{P} for protons: (a) Incident on protons of equal and opposite momentum, (b)...

Hello, Why is it that electron precession is not used in addition to proton precession in a proton precession magnetometer? It seems to me that when the frequencies are emitted as the protons precess that the electrons would do precessing at the same time and provide a secondary frequency to...

sorry i didnt follow the template but its a conceptual question I'm not sure i understand. if there's a proton in a decreasing magnetic field... will it move or anything? according to my deductions, it won't have any forces on it and therefore it won't move. although there will be an...

Homework Statement If protons with magnetic moment mu in the z direction are in a strong magnetic field of magnitude B in the z direction, what is the frequency f of radiation that will be absorbed by the proton as it transitions from parallel to antiparallel states? Express your answer in...

Homework Statement I have a circular magnetic field and a proton (A) a distance Ra from the center of the circle. The magnetic field is traveling into the page and is decreasing at some rate B(t). I have the radius of the circle Rb. The question is that when the proton is released, what...

Hey, I've recently started to revise for a spectroscopy test and had a random retardation moment where I asked myself "Why don't protons on a methyl group couple to eachover?" The answer seemed obvious, there all in the same chemical environment and all sigma bonded to whatever substituent you...

Hi I am doing a beginners physics course and I am learning about free-free emissions and bound bound emissions. I understand that an electron can emit and absorb any amount of energy if its in the continuum and therefore free. But what about the proton? It it sits in the continuuem can it...

Homework Statement A proton orbits a 1.0-cm-diameter metal ball 1.90 mm above the surface. The orbital period is 1.50 \mu s. What is the charge on the ball? Homework Equations F_{cp} = \frac{m v^2}{r} F_c = \frac{k q_1 q_2}{r^2} The Attempt at a Solution Since the proton is...

Homework Statement ou're taking a class in space weather physics. Space weather deals with the dynamics of the far upper atmosphere and the magnetic regions surrounding the Earth. You're preparing a term paper on the van Allen belts, regions where high-energy particles are trapped in the...

This is a question about proton magnetic moment. Does magnetic moment mean moment of inertia, as in resistance to change? Also it seems like this must be measured on an accelerated proton. Is that so, and if so, how is the proton accelerated? Is it a bare proton, or part of a larger system? (I...

I read on NIST CODATA that electron mass is a fundamental constant. I take from this that proton mass is not fundamental. I also read it is possible that proton-electron mass ratio may vary. So I wonder how proton mass is measured or derived. I have no training in physics, however in studying a...

Have we successfully removed a proton from an atom, or added one? Can we take mercury and remove a proton, or add one to platinum, and so make gold? Has this been done in a lab? k

Homework Statement A electron and proton are far way from each other. They move closer to each other due to their mutual attaction. When they meet is the kinetic energy of the eletron greater, less or even of that of the proton? It think it's even, but I'm not sure.

Homework Statement A proton with mass 1.45*10^-27 kg is propelled at an initial speed of 3.99*10^5 m/s directly toward a uranium nucleus 5.16 m away. The proton is repelled by the uranium nucleus with a force of magnitude F = a/x^2 where x is the separation between the two objects and a = 2.12...

The question is to calculate the speed of a proton that is accelerated from rest through a potential difference of 120V. Qp(charge of proton) ~ 1.60E-19C...with this, DeltaU = Qp*DeltaV...in which DeltaU is positive. It makes sense since the proton is heading towards a higher electric...

1. Homework Statement We are in a laboratory and there is a photon and an ultra-relativistic proton moving. The energy of the photon in the frame of reference of the laboratory is 35eV. The energy of the same photon in the frame of reference of the proton is 5MeV. What is the energy of the...

how fast is that proton?? SORRY; I HAD TO MOVE THIS TO THE ADVANCED SECTION Homework Statement We are in a laboratory and there is a photon and an ultra-relativistic proton moving. The energy of the photon in the frame of reference of the laboratory is 35eV. The energy of the same photon in...

[SOLVED] Charged parallel plates, proton and electron released simultaneously Homework Statement Two parallel plates 0.700 cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at...

Relationship of velocity of an electron/velocity of proton to...mass ratio Homework Statement An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, the electron acquires a speed ve, while the proton...

Homework Statement What is the speed of a proton whose kinetic energy is 23.0 keV? 1 eV = 1.6e-19 J 23 Kev = 23000 eV = 3.68e-15 J Homework Equations V = Sq. Rt. ( - ((2)(q)(Vba)) / (m)) The Attempt at a Solution

Homework Statement How much work does the electric field do in moving a proton from a point with a potential of +95 V to a point where it is -37 V? Express your answer both in joules and electron volts. _____eV _____J Homework Equations deltaPE = q * Vba The Attempt at a Solution...

Homework Statement A proton moving to the right along the x-axis at 3.8*10^5m/s, enters a region where the electric field of intensity 5.6*10^4n/c points to the left. How far will the proton move before its speed reaches zero? Describe the subsequent motion in deatail/ Homework...

Homework Statement A beam of low energy protons is observed to scatter elastically from a target of neutrons. Sketch the variation of the differential cross section with the resulting scattering angle and comment on a characteristic feature of the strong force than can be deduced...

What is the difference between electron capture, and electron-proton collions? My textbook has the feynman diagram of electron capture as a proton decaying into a neutron, and the proton emmiting a W+ boson, which is received by an electron, which then decays into a neutrino. However, the...

How do scientists assert the daring conclusion, that is overwhelmingly impossible even to speculate about, that the entire universe that contains billions of galaxies with billions of stars in each one of them along with dark matter and dark energy that make up 95% of our universe was once in...

Homework Statement A magnetic field of 0.1T forces a proton beam of 1.5mA to move in a circle of radius 0.1m. The plane of the circle is perpendicular to the magnetic field. What is the speed of the proton in the beam as it moves in the circle. Homework Equations The Attempt at a...

[SOLVED] Completely Elastic Proton Collision In my physics class we tried to solve this problem but nobody in the class could figure it out and the teacher was having difficulty with it. It is possible that the book put in a problem that isn't possible to solve... i am not very good with...

Homework Statement A proton enters a uniform magnetic field of strength B. Sketch it subsequent motion and derive an expression for the time, t, spent in the magnetic field.Homework Equations F=qvB=mv^{2}\div r The Attempt at a Solution I calculated the period of the particle in the field as...

[SOLVED] Bronsted Lowry Proton Theory Homework Statement Bronsted Lowry Proton Theory Acid is a proton H+ donor Homework Equations In my book. HCL + HOH ----> HOH + Cl My book says the HCL donates a proton. The Attempt at a Solution What I really do not get about this is that...

Homework Statement A proton or a neutron can sometimes "violate" conservation of energy by emitting and then re-absorbing a pi meson, which as a mass of 135 MeV/c^2. This is possible as long as the pi meson is re-absorbed within a shoart enough time \Delta T consistent with the Uncertainty...

Homework Statement Suppose an accelerator has been constructed to provide 1 TeV proton beam. It must be decided how to use it, There are four possibilities: a) hit a fix target; b) collide with a 50 GeV electron to study ep collisions; c) collide with another proton beam also...

Homework Statement 50uA beam of 1MeV proton Target = Iron of 0.05um thick Calculate scattered current density at distance 5 cm at 20 degrees angle Homework Equations \sigma(E,\theta) = \pi*Z_{1}Z_{2}e^{4}(M_{1}/M_{2})/ET^{2}The Attempt at a Solution I figured the probability of scattering to...

1) Hydrogen’s electron and proton are separated by 5.3x10-13 meters. What is the electrical force between them? 2) A charge moved .02 meters in an electric field of force 215 N/C. If the electric potential decreased by 6.9x10-19, what is the charge of the particle? 3) If a capacitor...

Homework Statement An electron is released from rest 2.0 cm from an infinite charged plane. It accelerates toward the plane and collides with a speed of 1*107 m/s What is the surface charge density of the plane?Homework Equations a=(qE)/m v=v0+a∆t The Attempt at a Solution v0=0 therefore...