Would theta be 0 degree or 6.41 degree? I got 6.41 by (45/20)^2+(30/5)^2=c^2 => sqrt(41.0625)=>6.41 degree. Can I do that?
To plug into that equation it would be (.6825*10^-3)*.15*6.41=10.158 mJ
Yes, I believe that is (microfarad); it doesn't say specifically.
I was very unsure on that step and wasn't quite sure how to compute the volume. Do I even to find the volume?
Homework Statement
A parallel-plate capacitor with C = 16 mu or micro FF is charged so as to contain 1.7 J of energy. If the capacitor has a vacuum between plates that are spaced by 0.35 mm, what is the energy density (the energy per unit volume)?
I am a little lost of this problem and...
Homework Statement
A voltage of 14 V is placed on a capacitor with C = 113 pF (picofarads).
(a) What is the charge on the capacitor?
(b) How much energy is stored in the capacitor?
I believe I have the correct equation but I'm not sure about the final answer because of the picofarads...
Homework Statement
The electric field in a particular region of space is found to be uniform, with a magnitude of 700 N/C and parallel to the +y direction.
(a) What is the change in electric potential energy of a charge [q = 6.5 mu or micro CC if it is moved from [(x, y) = (20 cm, 45 cm)]...
Homework Statement
A small piece of dust of mass m = 3.8 mu or micro g (micrograms) travels through an electric air cleaner in which the electric field is 526 N/C. The electric force on the dust particle is equal to the weight of the particle.
(a) What is the charge on the dust particle...
Homework Statement
A spherical metal shell has charge per unit area sigma and radius R. What is the magnitude of the electric field at a distance x from the surface of the sphere? You may include only these variables in your formula: sigma, R, epsilon_0, x
Homework Equations...