Plates Definition and 622 Threads

Homework Statement [PLAIN]http://img214.imageshack.us/img214/6328/physics2.jpg An electron enters the lower left side of a parallel plate capacitor and exists precisely at the upper right side (just clearing the the upper plate). The initial velocity of the electron is 7x10^6 m/s parallel to...

Homework Statement hello, how can i calculate force which work between two plates in condensator? I tried to write this in this way...

Hi, I was wondering if someone could help me understand how the potential of a parallel plate capacitor can be altered. I understand that the potential difference across two plates is equal to the potential of the battery that charges them, but can this potential be altered by changing the plate...

Homework Statement Identical plates are placed close together on ice. A 0.742 kg rabbit that is initially sitting on the plate on the left jumps to the other plate and immediately back to the original plate. The rabbit leaves both plates with a horizontal component of velocity of magnitude...

Homework Statement 5. Two large, parallel conducting plates carrying opposite charges of equal magnitude are separated by 2.20 cm. a) If the surface charge density for each plate has a magnitude of 47.0 nCm^-2, what is the magnitude of the electric field intensity in the region between the...

Hello, I can`t understand the following: Let`s say that we have a simple capacitor with two plates and air between them. And this capacitor is in a series circuit with a switch, voltage source and a resistor. Also, the capacitor is discharged and the switch is open. The voltage source is...

If there are two plates with +2Q and -Q, what is the charge distribution on the four faces? I would assert this is the only solution S1--------------------------- (+0.5Q) S2--------------------------- (+1.5Q) (space) S3--------------------------- (-1.5Q)...

Homework Statement An electron with an initial velocity of 5.6x107 m/s in the x-direction moves along a trajectory that takes it directly between the center of two 20 cm x 20 cm plates separated by 1 cm. The plates are connected to a high voltage power supply so that the potential difference...

how would you find the gap size between 2 infinite plates given that the fluid is water and the plates are silicon? the temp of water is 20 C and I am assuming that the heat transfer coefficient is 390 W/m^2K. i remember doing this stuff in heat transfer with temperature profiles and stuff but...

Homework Statement An electron starts from one plate of a charged closely spaced (vertical) parallel plate arrangement with a velocity of 1.63x104 m/s to the right. Its speed on reaching the other plate, 2.10 cm away, is 4.15x104 m/s. ... If the plates are square with an edge length of 25.4...

Homework Statement I am trying to calculate the electric field between these two plates... and I am using two different methods to do so. One gives me the correct solution, and the other does not. I am curious as to why the second method is wrong. Homework Equations Gauss's Law Phi =...

Upon calculating the electric field for a plate of charge, you arrive at: E = Q/Ae (Q the charge on the plate, A the area of the plate, e the permittivity of the dielectic) But then, isn't the total electric field between the plates twice this because of the equal but opposite charge on the...

As I have understood it, it is a classical problem to show that the force between to capacitorplates is \frac{1}{2}\epsilon _0 E^2 A, which is at first counterintuitive since one should think that it is QE = \epsilon_0 E^2 A. I am pondering that question a bit now and i saw the MIT lecture...

Homework Statement Two very large parallel plates are oppositely and uniformly charged. The field between the plates is 1.3×10^6 N/C. How dense is the charge on each plate ( in microC / m^2 ) Homework Equations The Attempt at a Solution

Hello, Do you have any idea where I could find my formula for the Grashof N°, Nu and Heat? Thank you very much for your help Steve

Homework Statement In the figure, a uniform, upward-pointing electric field E of magnitude 2.00×103 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 4 cm and separation d = 2.00 cm. Electrons...

Can anyone direct me to manufacturers/suppliers of the complete setup for the Polarization by Quarter-wave Plates Experiment? I have already found one: PHYWE Systeme (Germany) - http://www.phywe.com/461/pid/26331/Polarisation-durch-Lambda-Viertel-Plaettchen-.htm" , but I need at least two more.

Homework Statement at some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.20 105 m/s and vy = 3.70 103 m/s. Suppose that the electric field between the plates is given by Evec = (120 N/C) jhat. (a) What is the electron's acceleration...

Homework Statement Two large conducting plates are separated by a distance 'L', and are connected together by a wire. A point charge 'q' is placed a distance 'x' from one of the plates. Show that the proportion of the charge induced on each plate is 'x/L' and '(L-x)/L'. (Hint: pretend the...

Homework Statement A flat circular disc of radius 1.0m is rotated at an angular velocity of 0.65 rad/sec over a fixed flat surface. An oil film separates the disk and the surface. If the viscosity of the oil is 16 times that of water (20 degree C) and the space between the disk and the fixed...

Two parallel metal plates are separated by 1.5 cm and are maintained at a potential difference of 1200 V. A proton, initially at rest, is released from the poisitive plate. When it reaches the negative plate its speed is : So i know that potential energy is Vq. So i went 1200 V x 1.602 x...

the electric field between two plates . plates have an angle with each other. first plate has zero potential and the second plate has a V potential. i guess i must use laplace equation on cylndric coordinates but i couldn't find the answer. http://img85.imageshack.us/i/adsztw.jpg/

1. Positive and negative charges are distributed evenly in two parallel plates with width "w". The density of the positive and negative charge is +\rho and -\rho. Assume that the length of the plates at y direction is \infty (a) Find the electric field in the plates (b) Let the electric...

Homework Statement We have two vertical plates with the surface area of A. The charge of the left one is -(Q-q), while the charge of the one on the right is +Q. The left plate is held stationary. The question is, what is the force pulling the plate on the right side? The plates are made of...

For any capacitor, whose 2 plates or conductors are being held by a battery to a constant potential difference of V volts, there is a force of attraction between the plates, since they are oppositely charged. What is the force that 'holds' these conductors at their respective positions i.e. what...

Homework Statement Four identical metallic plates, each of area A, are seprated by a distance d as showen in the Figure. Plate 2 is given a charge Q. Plates 1 and 4 Both are earthed. Homework Equations Charge Distribution i.e. Charge on each Plate and On each Side of the Plate. Will the Outer...

hello i had a question bothering me very much, A dielectric slab is inserted between the plates of an isolated capacitor.The force between the plates will a)increase b)decrease c)remains unchanged d)becomes zero ... ans given:(c) I have 2 cases 1)charged with battery, removed...

Homework Statement A 7kg plate with a radius of 1.4m is rotating at 63 rad/s around an axis perpendicular to its center. Another plate that is not rotating is dropped onto the first plate and their centers align. The second plate is 5kg, with a radius of .8m. What is the angular velocity of...

Homework Statement A capacitor made of two parallel uniformly charged circular metal disks carries a charge +Q and -Q on the inner surfaces of the the plates and very small amounts of charge +q and -q on the outer surfaces of the plates. Each plate has a radius R and thickness t, and the gap...

Homework Statement Determine the work required to move the plates of an ideal parallel plate capacitor from a separation distance of D to an integer multiple of D, (assume only one moves for simplicity). The each plate has an area A. Homework Equations F = q^2 /( 2 e_0 A) field strength...

Homework Statement I have a channel of height H (y-direction) with three different layers. A bottom layer of height L where only viscous forces play a role and the lower boundary is a stationary plate, a middle layer of height L (so from L to 2L) where a force F depending linearly on the fluid...

Homework Statement A uniform, upward electric field E of magnitude 2.00x10^3 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 10.0 cm and separation d = 2.00 cm. An electron is then shot...

Homework Statement As shown in the circuit, a potential difference of 625 V is applied across an air-filled parallel plate capacitor having capacitance c1 = 2.36X10^-11 F and plate area A = 4X10^-3 m^2. the dielectric constanf of air is 1. consider the switch in the circuit to be opened as...

My book says that if a license plate must have 3 letters, and 4 numbers, when repetition is allowed, and no restriction is placed on the order of letters and numbers, then the amount of possible license plates is: \begin{pmatrix}7 \\3\end{pmatrix}10^{4}26^{3} \begin{pmatrix}7 \\3\end{pmatrix}...

"the sum of the force from the top plate and the force from the bottom plate always equals the same amount"...as shown here: http://www.regentsprep.org/Regents/physics/phys03/aparplate/ I mean, if a charge was placed at different places (ie distances) between 2 point charges, the net force...

Homework Statement A sheet of charge +Q is in between two large plates of a capacitor. The plates are separated by a distance 'S', and are connected to each other by a wire. The sheet of charge is closer to one plate, at a distance 'a' from it. Show that the ratio to +Q of the charges...

Hey asume i have conected up parallel plates but of different areas with a given potential difference ie battery, what hapens 2 the plates actualy i expect a uniform field, but how can we obtain that since we would require same potential on each plate! and secondly i expect both plates to...

If two plates of area A and separation d contain liquid in between with angle of contact 0 degrees, then what is the amount of force required to pull the two plates apart? How do we derive this??

Hi there, I'm wondering if anyone has any analysis or sources to help me understand how a Fresnel zone plate can be implemented on a curved surface, and the corresponding diffractive efficiency and focal length?? Thanks!

Homework Statement Two square metal plates are placed parallel to each other, separated by a distance d= 2.34 cm. The plates have sides of length L= 0.750 m. One of the plates has charge Q=+ 2.70 x10-3 Coulombs, while the other plate has charge -Q. What is the magnitude of the electric field...

Homework Statement An AA battery (1.5 V potential) is connected to a parallel-plate capacitor having 6.00cm-diameter plates spaced 4mm apart. How much charge does the battery move from one plate to the other? Homework Equations V=Q/C C=A\kappa\epsilon/dThe Attempt at a Solution Plugged in...

I'm not sure if this qualifies as a 'homework question'. There is no specific problem...I have a question about something in the text. I posted in 'Classical physics' with no luck. Maybe someone can help me here? It gives the situation of a conducting plate with charge density sigma 1 on...

Homework Statement Two large plane conducting plates are connected by a wire and are a distance D apart in a vacuum. A point charge +q is placed in the space between them, and at a distance b(<D) from one of them. What proportion of charge q is induced in each plate? Homework Equations...

Homework Statement A capacitor consists of two plane parallel plates, separated by a distance d. The space in between is filled with a uniform charge density J. Find the electric field at a point x away from the positive plate when a potential difference V is applied. Homework Equations...

I'm not sure if this qualifies as a 'homework question'. There is no specific problem...I have a question about something in the text. It gives the situation of a conducting plate with charge density sigma 1 on each side. The E field on each side due to the conducting plate is = sigma...

Homework Statement A pair of oppositely charged, parallel plates are separated by a distance of 5.0 cm with a potential difference of 500 V between the plates. A proton is released from rest at the positive plate, and at the same time an electron is released at the negative plate. Neglect any...

Homework Statement 1. If two plates, 1.0 cm by 1.0 cm, with charges of −2.30 µC and +2.30 µC, what is the magnitude of the electric field at b? +++++++++++++ ...b ----------------- 2. A uniform electric field of strength E = 4.80×10^4 N/C is observed in the region adjacent to a large...

Homework Statement A set of parallel conducting plates are separated by .05 m. When the plates are fully charged to a potential difference of 20 V, how much work would have to be performed to move a proton from the negatively charged plate to the positively charged plate? My second question...

Homework Statement Determine the potential 1.0 mm from the negative plate of a pair of parallel plates separated by 4.0 mm and connected to a 24 V battery. Homework Equations w = EPEa - EPEb v = kq^2/r^2 The Attempt at a Solution I'm not exactly sure how to start. Can someone tell...

Homework Statement I'm having a problem with the circuit in the attached diagram. I am looking for the charge on the plates of the capacitor a long time after the switch is closed. Homework Equations The Attempt at a Solution I found the current leaving the battery is 0.962 A a...