Electrostatic Definition and 884 Threads

Can someone explain this law to me in simple terms? I know that it is the electrostatic force between 2 charged objects in relation to the quantity and inversly related to the square of distance F=K q1 q2 / d^2 ..but what if you have atoms that are spearated by a certain distance and have...

Hello everyone, Did I do the 2nd part of this problem correct? Part B. I boxed in the answer, i think it will just be easier by showing you my drawing so here is the picture -> http://img221.imageshack.us/img221/9340/phsyicss9lb.jpg thanks!

Find the direction and magnitude of the net electrostatic force exerted on the point charge q2 in Figure 19-31. Let q = +1.8 µC and d = 41 cm. Direction ° (from the x-axis, which points to the right) Magnitude N *image of diagram* http://www.webassign.net/walker/19-31.gif

electroscope A large electroscope is made with “leaves” that are 78-cm-long wires with tiny 24-g spheres at the ends. When charged, nearly all the charge resides on the spheres. If the wires each make a 3.0E1° angle with the vertical (see figure), what total charge Q must have been applied to...

time as a function of distance? electrostatic force C = coulombs, Ke = electrostatic constant, d = distance, m = mass of electrons, v = velocity, c = a constant F(d) = (KeC^2)/d E(d) = (KeC^2) * integral (1/d) dd = KeC^2(lnd2 - lnd1) E = 1/2 mv^2 v = sqrt(2E/m) =...

Hi all, I am sorry this could sound like heard many times before, but I am trying to understand this problem and found nothing in my physics books. If I put a small dielectric (bit of paper) into an electrostatic field (for example generated by a rubbed plastic rod), the paper will be...

Hey-- I'm trying to model the bending of a beam due to electrostatic forces. (Femlab does offer this model on their website, but the module I'd need to run it costs $600!) I have no problem modeling a beam bending, and I have no problem creating a parallel plate capacitor, but when I...

I am currently working through section 2.5 of Griffiths' electrodynamics, specifically the part which deals with electrostatic pressure in conductors. I encountered the following question (question 2.39, or 2.38 in earlier versions): A metal sphere of radius R carries a total charge Q...

im studyng electromechanics and this is a problem i found gived a fixed point A charged with Q1 charge, gived a electrical wire of fix length L and charge Q2 distributed uniformly in it, the wire is fixed at its edges at 2 points along a line L, the line L and the point A are separated by...

Three identical point charges of 2 micro C are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm (.5 m), and the third at the 100 cm (1 m) mark. What are the mag. and direction of the electrostatic force which acts on the charge on the origin? The...

Potential at ANY point on a spherical shell due to external point charge Hi everyone Here is another problem: A point charge q is placed at a distance of r from the center of an uncharged conducting sphere of radius R (< r). Find the potential at any point on the sphere. I know the...

http://forum.lowyat.net/index.php?act=Attach&type=post&id=46273 Hi there, I've been trying this question quite long but I do not get the answer, could anyone help me? For part one, i got the answer... part (ii) ... i saw it in a book saying i suppose to choose a point to get the...

Sphere A carries a net charge and sphere B is neutral. Both are conducting spheres and they are placed near each other on an insulated table. Which statement best describes the electrostatic force between them? a) there is no force b/w them since one is neutral b) there is a force of...

I have just started electricity in physics and am wondering how to do this homework questions. The question is: Sphere A and B are insulated metal spheres with charges of +10 micro C and -5 micro C respectively. If sphere A has twice the radius of sphere B, what will be the charge on each...

Well,I've tried attempting this problem but I am not sure if I approached it the right way. Here is a link for the diagram and the question. [PLAIN]http://img.photobucket.com/albums/v367/crazy_cat_lady/physics/diagram1.bmp[/URL] If anyone could check it over and point out any mistakes...

Consider a solid sphere of radius R containing a total charge Q which is uniformly distributed throughout the volume with a volume charge density rho. a) find the total force exerted by the electrostatic field on the charge in the 'northern hemisphere'. express your answer in terms of the...

Have a problem that I'm not sure how to approach any help would be appreciated! If the electrostatic force between two protons is equal to 1x10^-7 Newtons, what is the distance between them?

Trying to understand some course material and I decided to look into electrostatic speakers. I can't seem to apply electrostatic theory formulaes to the speaker model. There are two stators and a diaphragm in the speaker, my current guess is that the two stators act like a capacitor and hence...

Prove that for charge-free two-dimensional space the value of the electrostatic potential at any point is equal to the average of the potential over the surface of any circle centered on that point. Do this by considering the electrostatic potential as the real part of an analytic function...

Electric fields and electrostatic forces (1 question) I was wondering if someone can show me how to answer this problem. Thank you. 1)Two charges are placed on the x-axis, an unknown positive charge at x=0 cm and a negative 8.642e-6 C charge at 2.993 cm from the origin. Calculate the...

Could someone please help me figure out how to determine the net electrostatic force and direction in this question? I have completed what I believe to be the first portion using Coulomb's Law for the force acting on the origin charge (F12 and F13) A charge of -3.0 micro C is fixed at the...

Can someone help me with this problem: Consider a simplified model of the singly-ionized helium atom, He+: 2 protons plus 2 neutrons in the nucleus, "orbited" by one electron at a constant distance of 2.65 x 10^-11m. a. What is the magnitude of the attractive electrostatic force between...

Point charges q1 and q2 are placed in space, with q1 at the origin and q2 a distance r from q1 making a 45 degree angle with the horizontal. a) Find the force using unit vectors i and j from q1 to q2 b) " " from q2 to q1 c) If q1=q2, what is...

Hi all, I have a few questions that I'd appreciate some guidance on. There are two identical dust particles:- mass 13ug charge +9.8E-15 C electrostatic potential energy 8.7E-17 J gravitational potential energy 1.1E-24 J The mass is given in the question, the energies I calculated...

A person accumulates a net charge of -59uC, how many excess electrons does this person get and by how much does her mass increase?

Doing my physics homework a few weeks ago led me to some startling conclusions (this doesn't really happen often, don't worry too much.) We were learning about electrostatic field energy, and I was doing a problem involving the finding of the electrostatic field energy of a sphere, but later in...

I've included a picture. Two charges Qc and -Qc(Qc = 4 µC) are fixed on the x-axis at x = -7 cm and x = 7 cm, respectively. A third charge Qb = 5 µC is fixed at the origin. A particle with charge q = 0.3 µC and mass m = 5 g is placed on the y-axis at y = 14 cm and released. There is no...

I've included a picture. Two charges Qc and -Qc(Qc = 4 µC) are fixed on the x-axis at x = -7 cm and x = 7 cm, respectively. A third charge Qb = 5 µC is fixed at the origin. A particle with charge q = 0.3 µC and mass m = 5 g is placed on the y-axis at y = 14 cm and released. There is no...

1}If the electric field is zero in some region, must the potential also be zero?An example? 2}Give an example of a conductor that is not an equipotential.Is this conductor in electrostatic equilibrium? 3)If a high voltage cable falls on top of your automobile, will you probably be safest...

Don't know where to go Get stuck at every corner. Here it is "A small droplet of oil of 50^10*-6m radius is sitting inside of an electric field 500^10*3 N/C which is pointing straight up. What must be the charge on the oil droplet so that the electrostatic force cancels out due to gravity? The...

there are two forces, the nuclear force which binds protons and neutrons together. However as the size of the nucleus gets larger the electrostatic force of repulsion in the nucleus overcomes the strong nuclear force. so larger atoms breakdown to form smaller atoms, why does the electrostatic...

Here is the question... A pith ball of mass 1.5g is suspended along a string which is attached to a non movable point, when a pith ball of equal charge and mass is brought close to the original pith ball. A state of equilibrium is reached and the pith balls are 2.6cm apart and the string...

"compression" of an electrostatic charged sphere Everytime i propose a new motion machine from my ignorance or misunderstunding of physics, your explanations solve some questions, but open new others: I proposed a system that acumulated electrons on a sphere surrounded by an electrons...

Hello everybody! Many changes since the last time i was here!. Now, I've got a question that i can't stop think about. I hope you could help me. We all know the excess of charges on connected conductors always tends to distribute equally... ALWAYS? Take a look to this animation...