Charged particles Definition and 182 Threads

1. How much work is required to assemble eight identical charged particles, each with charge q, at the corners of a cube of side a? Explain, based on your answer, whether or not this configuration is stable.

It has been stated that a charged particle in the vicinity of a magnetic field experiences a force given by F = qV x B, which states that there is no force when its velocity is zero. It also shows that only the particles direction can be changed, not its kinetic energy. My question is this...

If a charged particle passes through a magnetic field it will be deflected according to the right hand rule, i.e. VxB. What if the magnetic field lines are parallel to the velocity of the particle? Will the particle still be deflected?

A positron and an electron are simultaneously fired from paralle particle accelerators a distance d apart, with equal velocity v. One calculation says that each one will, being a moving charged particle, induce a magnetic field B=\frac{\mu_0 q v}{4\pi d^2} and since the other is moving in...

So I've created a program in C# with the XNA libraries which is meant to simulate motion between charged particles. I drew a pic to show the problem I'm having and how I'm moving the particle.

[SOLVED] Charged particles deflecting in a statics question. Homework Statement A particle mass 2g and carrying a charge of q is suspended from a light, insulating thread. A second particle carrying an equal and opposite charge is held near to the first particle in the same horizontal plane...

Homework Statement Identical isolated conducting spheres 1 and 2 have equal charges q and are separated by a distance r large compared to the diameters of the spheres. The electrostatic force acting on sphere 2 due to sphere 1 is 3.10-6N. Suppose now, that the third identical sphere 3, having...

I would like to determine the negative charged level on q2 particle, referring to following image, q1 is charged particle with x unit of positive charge, which q1 diameter is 80 cm, on the other hands, q2 is a neural particle, which q2 diameter is 30 cm. Both charged particles are separated in d...

Is it possible to have a massless charged particle in nature?

Homework Statement Hi, I have a solution to this, but I am looking for a more elegant solution. If we are given 4 positively charged particles at the 4 corners of a square, is there a better proof for the stability of the central point of square for a 5th positively charged particle apart from...

Homework Statement Hey guys I was wondering if you can help me out on these two questions i have. They're due by Wednsday so i'd appreciate if i can get a reply to se if my work is right on these by then. Thanks Question 1) A small spherical insulator of mass 80 grams and charge +1.80 x...

Homework Statement Two charged particles q1 and q2, both of m=10g: q1-----O----------q2 |-5cm-||----10cm--| q1=4 microC q2=-2 microC Find the velocity of q1 when it passes O. Homework Equations (for some reason latex isn't working on my browser) a=dv/dt=(dv/dx).(dx /t)=v.(dv/dx) Both...

Homework Statement In the figure below, four particles form a square. The charges are q1 = +Q, q2 = q3 = q, and q4 = -5.25Q. What is q/Q if the net electrostatic force on particle 1 is zero? Homework Equations F=k|q1||q2|/r2 a2+b2=c2 The Attempt at a Solution I first drew a free...

I simply can't wrap my head around a test question I received. I'll relate it as best as I can remember: "A system of 3 charged particles are arranged such that the total potential energy of the system is -200 J. Then, consider the same 3 particles, arranged so that the potential energy of the...

Is it possible to use an alternating/rotating electrostatic method to confine charged particles? For example, if you want to confine electrons inside a cube, could you use a negative charge that is alternated between each side at a time, on a timescale of nanoseconds between each alternation?

Homework Statement A beam of charged particles of K.E. = 1keV and q=1.6 x 10-19 C and 2 masses 8 x 10-22kg and 16 x 10-27kg come out of an accelerator tube and strike a plate at a distance of 1cm from the end of the tube, where the particles emerge perpendicularly. Find the value of the...

Homework Statement Given three equal(1,2,3) (negative) charged particles , forming a circle ; and a charged particle on the center of the circle(#4). 360/3 = 120 . The angle between the charged particles are 120 degrees. Homework Equations 1) First Case : Find the resultant force...

2 Particles are fixed to an x-axis: q1=2.1*10^-8 C @ x=.2m q2=-4.00q1 @ x=.7m We are trying to find the coordinate on the x-axis where the net electric field produced by the particles = 0. The equation I have is E=((8.99*10^9)q)/r^2 I got what i thought was q2 first, by multiplying...

Hi all, I have recently observed a very strange thing (or rather, I shall say unexpected phenomenon). When I deposited some charged micro-particles between 2 electrodes (vertical plates) with a DC bias in hexadecane oil, I expected the negatively charged particles to go to the positive...

A charged particle in a magnetic field is spiralling along a path defined in cylindrical coordinates by r = 1 m and θ = 2z rad (where z is in meters). The speed along the path is constant at 3.87 km/s. What is the z-component of the velocity, vz, in cylindrical coordinates? My attempt...

Homework Statement An electron, initially at rest, is accelerated through a potential diff of 15.0 kv. It is then allowed to circulate at right angles to a uniform magnetic field of strength 2.35 T. Calculate the electrons final speed before entering the magnetic field. Homework...

Homework Statement We have a system with N particles with masses m1, m2, ... mN and electrical charges q1, q2, .. qN that interact electrostatically. We assume these interactions are instantaneous. Construct the formula for the total energy and show that this is conserved. The Attempt at a...

Homework Statement 1) Calculate the value of B_z needed for an electron with a speed of 6X10^5 m/s to be deflected to the right in acirle of radius 3cm. 2) Calculate the value of E_x needed for an alpha particle with a speed of 6X10^5 m/s to be deflected to the right in a circle of...

Homework Statement Five equal-mass particles (A–E) enter a region of uniform magnetic field directed into the page. They follow the trajectories illustrated in the figure. Homework Equations The Attempt at a Solution i used the formula v=qBr/m got the following "A,B,C=E,D"...

Homework Statement Two identical particles, each having charge +q, are fixed in space and separated by a distance d. A third particle with charge -Q is free to move and lies initially at rest on the perpendicular bisector of the two fixed charges a distance x from the midpoint between the...

I was thinking about this problem today: You have two nearly identical charged particles, except that one has a charge of +1 C and the other has a charge of -1 C. If you place them at rest one meter apart, how long will it take for them to collide, and what will be their velocities when they...

Homework Statement Two horizontal metal plates, each 100 mm square, are aligned 10 mm apart, with one above the other. They are given equal-magnitude charges of opposite sign so that a uniform downward electric field of 2000 N/C exists in the region between them. A particle of mass 2.00 X...

Homework Statement A particle, with a charge +q and a mass, m, is inserted into an evacuated chamber. The chamber is placed between two parallel metal plates that are a distance d apart, and are connectd to the terminals of a power supply that provide V volts (one plate to the positive...

Hi everyone, I remember reading there is a theoretical argument that said its absolutely impossible for systems of charged particles (plasma) to cobble together without external field. But I don't remember the name of the theorem. Can anyone name it? Or even better point me to some nice...

Homework Statement Three charged particles are placed at the corners of an equilateral triangle of side 1.20 m. http://i565.photobucket.com/albums/ss99/dmullin4/HomeworkCH21P13.jpg The charges are +7.0 microcoulombs, -8.0 microcoulombs, and -6.0 microcoulombs. Calculate the magnitude and...

Homework Statement A charged particle A exerts a force of 2.62 micro Newtons to the right on charged particle B when the particles are 13.7 mm apart. Particle B moves straight away from A to make the distance between them 17.7 mm. What vector force does it exert on A? using coulombs law...

Why do we not consider quantum effects when we deal with motion of electrons in a Cathode Ray Oscilloscope, or in a cyclotron? We derive various relations using classical physics which turn out to be quite accurate in the laboratory.How is this possible when it is expressly known that classical...

Homework Statement Two 9.00 µC charged particles are located on the x axis. One is at x = 1.00 m, and the other is at x = -1.00 m. (a) Determine the electric field on the y-axis at y = 0.900 m. (b) Calculate the electric force on a -3.00 µC charge placed on the y-axis at y = 0.900 m...

Homework Statement A particle with a charge of +8.4 µC and a speed of 55 m/s enters a uniform magnetic field whose magnitude is 0.30 T. For each of the cases in the drawing, find the magnitude and direction of the magnetic force on the particle. Homework Equations B = F /...

Homework Statement What is the distance(d) separating the charged particles dangling on the pendulum? Length of Nonconducting string=120cm mass of particles= 10g Charge q = 1.2*10^-8 Homework Equations Fe=(k*q^2)/d^2 The Attempt at a Solution I think I could get this...

Homework Statement Two protons are moving directly towards each other. When they are very far apart, their initial speeds are 1.5 x 10^6 m/s. What is the distance of closest approach? Homework Equations The Attempt at a Solution I know how to do this problem when one of the...

Homework Statement At a particular moment, three small charged balls, one negative and two positive,are located as shown in Figure 13.46. Q1 = 1 nC, Q2 = 5 nC, and Q3 = -2 nC. Remember that you must first convert all quantities to S.I. units. 1 nC = 1 nanocoulomb = 1e-9 C. (a1)...

What causes EM radiation?? the answer is in the oscillation of charged particles, but why or how does that produce electromagnetic radiation? How does the fluctuations in the electromagnetic fields cause release of virtual phtotns, or does it, and other EM radiation?? please help me through...

I'm hating Electromag as of late. To the extent I can't even understand these 'simplest' of questions. I don't want anyone to be doing my work for me as nothing is essentially accomplished that way. If someone could head me in the right direction with these questions, I'd be most grateful...

I have the below doubts related to charge and mass.. Why charge always comes with mass? Why there are no massless charged particles? what prohibits it? Is there any theory that prohibits it Or still to find one? How charge of a particle is calculated?

Multiple Point Charges Alright so the question is: A charge of 1.2x10^-3C is fixed at each corner of a rectangle that is 30cm wide and 40cm long. What is the magnitude and direction of the electric force on each charge? What is the electric field and the electric potential at the centre? I...

Homework Statement How much work is required to assemble eight identical charged particles, each of magnitude q, at the corners of a cube of side s? Homework Equations W=deltaU delta U = kQq/r The Attempt at a Solution I've come up with those equations, and was trying to plug...

Homework Statement A plastic rod that has been charged to -15.0 nC touches a metal sphere. Afterward, the rod's charge is -10nC. Part C - How many charged particles were transferred? Homework Equations Don't know any e=1.6 * 10^-19 The Attempt at a Solution This chapter...

Homework Statement -A charged particle A exerts a force of 2.62 micro coulombs to the right on charged particle B when the particles are 13.7 mm apart. Particle B moves straight away from A to make the distance between them 17.7 mm. What vector force does it then exert on A? Homework...

I was discovering a way to focus a number of charged particles which has been accelerated by Van de Graff generator into a beam.I do tried to find ideas in uniform magnetic field,but it seems I can only focus the particles onto a point rather than a beam.So here I was asking whether there had...

why accelerated charged particles radiate? i appreciate if you help.

[SOLVED] electrostatic force Homework Statement The figure shows an arrangement of four charged particles, with angle θ = 33.0 ˚ and distance d = 3.00 cm. Particle 2 has charge q2 = 8.00 × 10-19 C; particles 3 and 4 have charges q3 = q4 = -1.60 × 10-19 C. What is the distance D between the...

1. An ionized deuteron (a particle with a + e charge) passes through a velocity selector whose perpendicular magnetic and electric fields have magnitudes of 40 mT and 8.0 kV/m, respectively. Find the speed of the ion 2. When a charge particle moves in a velocity selector, both electric...

[SOLVED] Two charged particles fired at each other. Homework Statement A proton and an alpha particle (q = +2.00e, m = 4.00u ) are fired directly toward each other from far away, each with an initial speed of 0.172c. What is their distance of closest approach, as measured between their...

Why the charged particles flow perpendicular to the magnetic field?? It might seems like a electrical physics problem.. I need to understand why the charged particles flow perpendicular to the magnetic field.. Any idea??