Proton Definition and 813 Threads

Homework Statement At t=0, a proton is moving with a speed of 5.8\times 10^5 m/s at an angle of 30° from the x-axis, as shown in the figure. A magnetic field of magnitude 1.7 T is pointing in the positive y-direction. What will be the y-coordinate of the proton 15 \mu s later? Homework...

Homework Statement Find the speed (as a decimal fraction of c) and momentum of a proton that has a kinetic energy of 1000MeV. The proton mass is 1.673x10-27kg, or 938 MeV/c2. Homework Equations KE= (1/2)mv2 KE= \gammamc2 p=mv \gamma=1/(sqrt(1-(v2/c2))) The Attempt at a Solution...

I don't know much about quarks but if a proton is uud and a neutron is udd, is the (mass of a neutron)-(mass of proton)=mass of a down quark?

Can we calculate the difference in mass between a Proton and Neutron? If so, how? [ Moderator: why did you move this from QM to general physics? ]

Homework Statement A single proton and a single electron are fixed at a distance of 2.8 meters from each other. Find the magnitude of the electric force of attraction between them. i have the answer to this, it is: 2.93*10^-29 but now it asks: Find the magnitude of the gravitational...

Homework Statement Draw the skeletal structure of the compound with molecular formulaC3H4Cl4 whose proton NMR spectrum contains a down-field triplet and an up-field triplet with relative integration of 2:2. 2. Rationale for Solution Integration ratio of 2:2 means CH2-CH2, after this one carbon...

(1). Homework Statement Suppose a proton is fired from the negative plate of a capacitor charged up to 1000 Volts. How fast must it be traveling to reach the other side?(2) Relevant equations Okay, so I figured that this would be a conservation of energy problem and used: 1/2mv2 = (KeQq)/r I...

(1). Homework Statement Suppose a proton is fired from the negative plate of a capacitor charged up to 1000 Volts. How fast must it be traveling to reach the other side?(2) Relevant equations Okay, so I figured that this would be a conservation of energy problem and used: 1/2mv2 = (KeQq)/r I...

The charge of an electron is exactly equal in magnitude to that of a proton (2 up quarks plus down quark). What is the theoretical basis for this, or is essentially a fact of nature that is accepted?

Radius of proton due to QED?? In one account of the new findings of smaller proton radius, the claim was repeated several times that the radius of a proton was predicted by QED, in conflict with the new measurement. Why QED? I would think, within a proton, QCD is orders of magnitude more...

How reactive is a proton? Could you have a "gas" or something of protons confined to small pipes without them reacting heavily with the material?

In a particle accelerator I.e. LHC a beam of protons are moving past each other and produce an est 1billion collisions per sec. Here's a question about that and the result of such collisions. please bear with me as this may seem a simple question. how do we know exactly that the results recorded...

Homework Statement A uniform electric field of magnitude 640 N/C exists between two parallel plates that are 4.00 cm apart. A proton is released from the positive plate at the same instand that an electron is released from the negative plate. Determine the distance from the positive plate that...

Homework Statement The electric field at a point in space is E= (200i+ 900j)N/C . What is the magnitude of the proton's acceleration? Homework Equations a = F _{on q} / m = (q/m) E The Attempt at a Solution I determined earlier that the x-component of the electric force on a...

I just started learning about cellular respiration and I'm not clear as to what the word "gradient" means. I see it tied to many terms such as electrochemical gradient, proton gradient and ion gradient. Is a gradient just a space or "field" with varying concentrations of something (protons...

Hey all, i just had a quick question in regards to fusing Boron-11 and a Proton. If one were to fire protons at a block of Boron-11, about what percent of the protons would actually achieve fusion? Would varying the speed of the protons effect the fusion rate at all? (Other than stopping any...

Good Afternoon, I need help on the folloewing question: The Earth's magnetic field is relatively homogenous over large areas. therefore how do we calculate the resonance frequency of a proton? Could someone please direct me to formulas, variables and possible outcomes/solutions to...

I am trying to help my son in his year 12 physics. I know very little of this can someone please assist. find in eV (electron volts) the energy of a proton with a de broglie wavelength of 40 pm (picometres) What would the correct formula be ? A good chance for me to learn as well ;)...

How did he measue the proton velocity in the polonium-beryllium experiment? The only source with some description describes his using current as a means to do so - but sure that would require knowledge of the number of protons in order to ascertain the drift velocity?

Hi, i was wondering what the implication is of the fact that the proton is smaller than was thought to be. there is an article about it http://www.chem.info/News/Feeds/2010/07/topics-plant-operations-the-proton-smaller-than-thought/" thanks

First of all, do you believe the new measurements are accurate and the proton is actually 4% smaller. If you do, What implications do you think this will have?

Homework Statement A proton is fired at a nucleus containing Z protons and N neutrons, with a kinetic energy K. Show that the minimal distance r_0 = [(Ze^2) / 4pi*epsilon_0] * (1/K) Homework Equations E=(q/4pi*epsilon_0) * (r-r' / |r-r'|^3) The Attempt at a Solution I know that at...

Howdy folks, i have read that high energy protons striking a target nucleus (say silicon) can produce neutrons through spallation. Can someone point me to some literature, that gives the following details. 1) What energy neutrons are produced for a given input proton...

Is charge conserved in the remains of the collision?

say we have a slab of glass and an incoming photon , and it hits a proton in the slab of glass , will it get absorbed and re-emitted or will it oscillate the proton , what will happen , Any input will be much appreciated

At a certain distance in vacuum there are proton and electron (they are at rest with resptect to their's CM). I wonder after what time will they collide? Of course, we neglect the fact that when the distance between the particles become very small, there is not only an electrical force acting...

By what factor would the radius parallel to the direction of travel contract for a 7 TeV proton, relative to an antiparallel 7 TeV proton, in the Large Hadron Collider?

Homework Statement If you wanted to accelerate a stationary proton, would you use electric field or magnetic field? why? Homework Equations The Attempt at a Solution

Homework Statement A high speed proton collides with a proton at rest, two proton-antiproton pairs were created. That is some of the accelerated protons kinetic energy was enough to be converted into the mass of the new particles. If the proton-antiproton pairs move along together as a single...

A proton's speed as it passes point A is 53,000 m/s. It follows the trajectory shown in the figure below, in which V1 = 15 V and V3 = 5 V. What is the proton's speed at point B? Figure: http://www.webassign.net/knight/p29-44alt.gif Homework Statement Mass of proton: 1.67e-27 Charge of...

Homework Statement A proton is released from rest at t=o in a uniform electric field whose magnitude is 2.5e-8 N/C. How far has the proton traveled after .5 s? Homework Equations x = vot + 1/2at^2 The Attempt at a Solution x = 1/2(9.81)(.5)^2 = 1.2 but it says the answer is...

1. Predict the minumum speed of a 20.0MeV proton as it passes within 1.0x10^-13 meters of a lead nucleus having 82 protons. (Note: 1eV = 1.6x10^-19 Joules) 2. How do I start off? 3. All i can think of is to get a charge for the lead nucleus by using q=ne which is the number of...

This Prob is from Shankar, 17.2.3 "we assumed that the proton is a point charge e. If the proton is a uniformly dense charge distribution of radius R, the interaction is modified as V(r)= -2(e)^2/(2R) + (er)^2/(2(R)^3) r<R = -e^2/r r>R Calculate 1st Order shift in the ground-state...

Just to start, let me reassure you that I am not an LHC alarmist. I understand and agree with the cosmic ray explanation, i.e. earth, the sun, jupiter, and everything else would be a BH if they didn't evaporate. Anyway, I was reading around a little on wikipedia and came to this page...

How can I get the wavelength of a single proton if its kinetic energy is equal to its internal energy?

my room mate's dating this guy that told me a pretty interesting story recently. him and a few of his buddies got together and made a proton accelerator out of some bitter magnets in a night. he made a "proton generator" out of ionizing hydrogen in a light bulb. one of them is an advanced...

Homework Statement A proton in a tin nucleus is known to lie within a sphere whose diameter is about 2.2 multiplied by 10E-14 m. What are the uncertainties in the momentum and kinetic energy of the proton? Homework Equations delta(x)*delta(p) >= hbar delta(E)*delta(t) >= hbar The...

Hello; Is this statement true? A hydrogen positive ion would have no electrons, and pure hydrogen itself has no neutrons. Therefore, would it simply be a proton? Thanks.

Homework Statement A proton is accelerated to 3*10^6 m/s and heads towards a spherical charge distribution having a charge of 1.6*10^-18 C. Approximately how close to the distribution does the proton travel before stopping? (Assume inital potential energy of proton is zero). Vi= 0 Q=...

Proton Beam therapy is an advanced technique to destroy tumors by concentrating a high energy beam of protons to a specific depth inside the body of a patient. These proton beams are produced by accelerators and steered to the patient-treatment rooms by magnets. In a particular cancer treatment...

What would repel, hydrogen / a proton?

Proton's Velocity Homework Statement What is the speed of the proton? Homework Equations B=u0qv/(4pir^2) The Attempt at a Solution I rearranged the equation so that I solve for velocity, v. I determined that r^2 is 1.8*10^-5 m. I plugged in 1.1*10^-3 for B. The q for the...

Homework Statement OK. So I've been given a uni lab report to write up but we were only told yesterday how to read proton NMR, and it's due in on Monday. I'm not terrible at deciphering it, but the compound I've been given the NMR for doesn't make sense (to me). I have to look at the proton...

Each proton has it's own magnetic field so it should effect the magnetic field of all nearby proton whether it is homologous (equivalent) or not. I don't understand how this discrimination arise? How a proton understand - "that proton is like me so I shoudn't ... ... ... " I mean it's...

Homework Statement An infinitely long line of charge has linear charge density λ = 3.00 pC/m. A proton is at a distance d = 14.5 cm from the line and moving directly toward the line at v = 2.00 km/s. a. (3 points) What is the kinetic energy of the proton? b. (15 points) How close does the...

Hi, I am a young physics student who wonders a lot about the atom, especially it's nucleus. I thought about the atom and realized that there could never be a nucleus of two protons because they both would reject each other. I have made some calculations and realized that the gravitational force...

Protons having momentum 7.63*10^-16 kg*m/s are held in a circular orbit of radius 1 km by an upward magnetic field. What is the magnitude of the field? Answer in units of T (Tesla). r=mv/qB; where r is the radius of the circular orbit, m is the mass of the particle, v is the velocity of...

Homework Statement Proton moving in -y direction with a magnetic field pointing in the +y direction with a manitude of 5.0 T. The proton has a velocity of 3.01x10^7, What is the magnitude and direction of the magnetic force. Homework Equations F=q(v x B) The Attempt at a Solution...

Homework Statement I have attached the image. The question is -- What is the potential energy of a proton at the midpoint of the capacitor? I know this is an extremely easy problem, but I can't seem to get the formula right... Homework Equations I tried U = qV, using 1.6*10^-19 *...

I have multiple choice questions, but I only get one chance, so I want to make sure I answer correctly. 1. A charged rod is brought near a suspended object, which is attracted to the rod. Can we conclude that the suspended object is charged? Explain. o Yes o No Yes, the suspended object is...