Electric forces Definition and 66 Threads

There are two long horizontal wires. The currents in both wires are traveling in the same direction. The current in the top wire is much larger than the current in the bottom wire. A weight is suspended from the bottom wire. Since magnetic forces can't do work, what force is doing work on...

a small 2 g ball is suspended by a 20 cm string in a uniform electric field of 1.0 x 10 to the fourth power N/C. If the ball is in equilibrium when the string makes a 15 degree angle with the vertical, what is the net charge on the ball? I need someone to check my work for me F=mg (mass...

I have an illustration that look like this: - + + on top of a cart. The charges are balls and are very light, and have equal maginitude charge. The rods supporting and connecting them are made with an insulating material and are also light. The cart rests on a smooth table. How would I draw...

I have quiz coming up soon, and my teacher hinted that I had to find a formula for electric force using variables of mass, gravity, and an angle. "Fe" = eletric force, |E| = field strengh, q= charge in Columbs. To find eletric force all i know is Fe = kq1q2/r^2 , Fe = |E|q anyone got...

for the pentagon, there is a + charge at 1, - @2, - @3, + @4, - @5, and + @6. In part A, we are asled to find the net electric field at point P, which is half way between 1 and 2. Each side is 2 mm long, and each charge is an elemental charge. So, I did- E1=E2=kq/(r^2)...for r I used...

Electric Forces Problem need help! ok i need to kno how to add all the forces acting on charged particles. these particles are in a square + . - . -. - . for instance i solved for all the forces acting on the + particle but i don't know how to add the three since it adds one...

Ok, the problem states: there are four charges, each with a magnitude of 2.0 uC. Two are positive and two are negative. The charges are fixed to the corners of a 0.30 m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square. Find...

Hello all. I am kindof stuck on this problem. It asks: The figure below shows three point charges all posotive. If the net electric force on the center charge is zero, what is the value of y/x. The answers: a) 4/9 b) \sqrt{2/3} c) \sqrt{3/2} d) 3/2 e) 9/4 This is my figuring...

Homework help -- Electric forces "Two tiny water drops, with identical charges -1.00x10^16C, have a centre to centre spereration of 1.00cm. A) What is the magnitude of the electrostatic force acting between them? B)How many excess electrons are on each drop, giving it its charge imbalance?"...

forgot this formula Here is the question: determine the vertical component of its velocity after it has traveled a certain distance horizontally... does any1 remember the formula thanks

Two 2.06e-6 C point charges are located on the x axis. One is at 1.06 M and the other is at -1.06 M (a) Determine the electric field on the y-axis at .48 M This is how i did it: Etotal=sum of E vectors... E=ke*q/r^2 r^2=1.06^2+.48^2 q=2.06e-6 E1 = Ke*q/(1.06^2+.48^2) E2=...

I am wondering if there is some way for the force between two charges (calculated by Coloumb's law) and the force applied by a field on a charge. Thanks in advance

Ok this is the question in textbook i can't figure out. "The force of repulsion that two like charges exert on each other is 3.5N. What will the force be of the distance between the charges is increased to fice times its orginal value ? " im a physics moron , treat me like one :smile...

When 2 identical ions are separated by a distance of 3.3*10-10m, the electrostatic force each exerts on the other is 8.5*10^-9N. How many electrons are missing from each ion? I know I have to use coloumb's law to get Q1Q2, but how do i get the number of electrons missing from each?

I need help with the following, I don’t even know how to start A molecule of DNA ( deoxyribonucleic acid) is 2.17μm long. The ends of the molecule become singly ionized – negative on one end, positive on the other. The helical molecule acts as a spring and compresses 1.00 % on becoming...

Hello all, Physics is generally pretty hard for me, so understanding Electric forces has been a monster. I've done what I "know" how to do on the following problem, but I need some input from the professionals =) Thank you in advance. Two point charges, Q1 and Q2 are located a distance .20...