Plates Definition and 591 Threads

Homework Statement Capacitor parallel plates separation $$d$$, potencial diference $$V_0$$, at the center there is a semi sphere of radius $r_0$. Find the potencial as function of position if $$d>>r_0$$ Homework Equations I think that relevant equation are Gauss Law The Attempt at a...

what are photographic plates ? why are they used radioactivity experiments?

Homework Statement The parallel Plates of a capacitor have an area of 2.00 x 10-1m2 a separation distance of 1.00 X 10-2 m and are connected to a 3000 V power supply. The capacitor is then connected from the supply, and a dielectric is inserted between the plates. We find that the potential...

If I had 2 serrated plates like the ones in the attached picture locked in place like seen below. How would I go about calculating the maximum amount of torque needed for failure of the part. Assuming it has 48 teeth and is made from stainless steel?

Homework Statement The electric field between two circular plates of a capicator is changing at a rate of 1.5 x 10^6 V/m per Second. If the displacement current this instant is ID = 0.80 x 10^-8 A find the dimensions of the plates Homework EquationsThe Attempt at a Solution The capacitance of...

A sheet of gold foil (negligible thickness) is placed between the plates of a capacitor and has the same area as each of the plates. The foil is parallel to the plates, at a position 1/2 of the way from one to the other. Before the foil is inserted, the capacitance is 7.9μF. What is the...

How do we find out the potential difference between two equal and opposite charged (conducting) parallel plates mathematically? Let the charge on a plate be 'Q', Total area of a plate be 'A', the distance between the plates be 'd'. I need a direct mathematical solution please, I've come across...

I am doing my wrong project from school. Its basically a science fair but only for the students in the class. I came up with the idea to use piezoelectric plates to charge a capacitor that then charges one of those portable po charge a phone. I know I'm not the first one do this, but I do want...

How can a time constant, in parallel plates, be the original value without changing the capacitor?

I want to make some iron oxide from plate steel i have a couple hundred pounds that I can process but want to make about 50 pounds id prefer to just do it by electrolysis. Do to safety issues I would prefer to process it in 2 pound batches in a polyurethane tub. I would also like to save the...

1.Homework Statement Two large thin metal plates are parallel and close to each other. on their inner faces ,the plates have surface charge densities of opposites signs and magnitude 1.77 multiplied by 10^-11 coulomb per square meter.What is electric field a)to the left of the plates b)to the...

Homework Statement I need to solve a problem like Jackson 3.18. I need to find potential due to the same configuration but the position of two plates is opposite i.e. Plate at Z=0 contains disc with potential V and plate at Z=0 is grounded. Homework EquationsThe Attempt at a Solution I think...

Dear all, I've one question about fillet weld. Ex. i have T-joint with both plate are 10mm thickness. if i want weld around on leg of plate, so which symbol can i choose on both case below? 1. Both side of arrow is triangular and no around symbol. 2. only side of arrow is triangular and...

Hey how can we make peltier tiles or plates at home with some less costing materials. Please explain with pictures. Thanks in advance!

Homework Statement Two conductive metal plates are bonded together. Upon bonding, an oxide layer forms between them. The oxide layer is negligible thus the overall resistance of the plates is small. However I am having trouble finding this overall resistance, i.e., trying to find Cp and Rp...

Homework Statement The space between 2 perfect conductor plates parallel to the x-z plane separated by a distance 2a are filled with 2 dielectric materials whose surface also lies in the x-z plane, at a distance equal to a from the plates. We're looking for TM modes propagating along the z...

First in Circuit A: I hook up a battery with a voltage of V up to a capacitor C1. Once C1 is fully charged it has 6+ on its positive plate and 6- on the negative plate. Given it's fully charged, the +terminal of the battery and the +plate are in electrostatic equilibrium. Since they are both in...

Where can I find actual Casimir plates? To buy or hire for experiments, I mean. If so, what do they cost?

hello all, I am in the process of measuring coefficients of a rectangular panel using given table in textbooks to obtain them. I have attached a simple figure of two situations; left is my current situation to analyze- a clamped end and compressive force on the other end. The situations...

What is the steel grade of commercially available mild steel channels (say MC 125) and MS plates (say 4mm MS sheets)?

Hello I have a quarter wave plate for 550 nm but i can't determine which it is a zero quarter wave plate or multiple. How can I find m in this formula : delta phase =m*2 Pi +Pi/2 ? Thank you.

If you place an electron between oppositely charged parallel plates, is it true the the force on it is the same regardless of how far it is from each plate? If so how?

whatis the difference between flat and thin plates?

Homework Statement Four identical parallel metal plates with area $$S$$ and distance between each two $$d$$ are located in air. The external plates are connected by wire. What is the equivalent capacitance between A and B? This is problem from Irodov.Homework Equations $$q=UC$$[/B]The Attempt...

In my textbook it is written that Electric charge on plates of capacitors (without dielectric ) is Q=CV And when dielectric is inserted in the space between plates of capacitors .charge Q remains the same whereas values of C and V change. i.e Q=C'V' is it correct?

Quick question about electromagnetic waves traveling through what's basically a capacitor. In the picture I have labelled areas that I'm curious about. 1. Is there a potential induced at A? 2. If yes, is it localized? I suspect the potential would be different at A and B. 3. Is it correct to...

Homework Statement Three conducting plates, each of area A = 3.5 cm2, are connected in such a way that the center plate can be moved between the two fixed outer plates. If the distances between the outer plates and the center plate are d1 = 0.35 mm and d2 = 0.65 mm, find the effective...

In an example in my book, the author poses the following question: Given two large plates at a distance d from each other with arbitrary charges Q' and Q" (with Q' on the bottom plate and Q" on the top plate), how are the charges distributed on the plates? The author lists the following...

Homework Statement Two large, flat metal plates are separated by a distance that is very small compared to their height and width. The conductors are given equal but opposite uniform surface charge densities +- \sigma. Ignore edge effects and use Gauss's law to show a) that for points far...

Homework Statement Homework EquationsThe Attempt at a Solution With my solution, I think cold feed means ##q = \infty##, which is seen from my xy diagram. I have some issue understanding the statement "for each mole of feed 0.15 mol of vapor is condensed at the feed plate". I assumed that...

Homework Statement A 5.02 pF air-filled capacitor with circular parallel plates is to be used in a circuit where it will be subjected to potentials of up to 95 V. The electric field between the plates is to be no greater than 1.40×104 N/C. As an electrical engineer for Live-Wire Electronics...

Homework Statement A droplet of oil, carrying an extra charge of one electron, is held motionless between parallel plates separated by 1.89 cm, with a potential difference of 39.8 kV. What is the mass of the droplet? 2. Homework Equations E=0.5QV C=Q/V The Attempt at a Solution Really...

How exactly do the electrons move from the capacitor to the rest of the circuit? Do they fly between the capacitors plates, or can they only travel where there is a wire connection? (I.e., if a small chunk of our circuit looks like this: A-------| |-------B can an electron start from A, go to...

Homework Statement I am trying to solve a problem from Jackson's book (in chapter 8). I must describe the propagation of a TEM mode through a transmission line that consists of two infinite conductor plates that are parallel to each other and separated by a distance a. There's a dielectric...

Homework Statement An electron traveling horizontally east passes between two horizontal, oppositely charged plates and is deflected downward. Part A: Passing through the same space between the plates, in what direction (if any) a proton traveling horizontally east would be deflected? Part B...

Hi I'm looking for a equation (or equations) needed to calculate the electric field between to plates with the same charge. For example, two plates with positive charge. Any help is appreciated.

Homework Statement Two large, flat metal plates are separated by a distance that is very small compared to their height and width. The conductors are given equal but opposite uniform surface charge densities +σ and -σ. Ignore edge effects and use Gauss's law to show a) the electric field...

I have a very fundamental question about interference and quarter-wave-plates. My setup contains only few elements: lightsource, QWPs, double slit and some detectors to see the interference pattern. (Detectors are missing from the bottom of the figure.) An important thing is that the two QWPs...

Homework Statement At what angle will the electrons in the image leave the uniform electric field at the end of the parallel plates (point P) ? Assume the plates are .049 m long, E = 5x10^3 N/C and v0 = 1x10^7 m/s. Ignore fringing of the field. Homework Equations E = kQ/r^2 F=ma F= kQ1Q2/r^2...

Hi I was thinking about two parallel plates with same charges (there's no electrical field between them). How can we calculate the repulsive force? Does anyone have any ideas besides numerical integration? Thanks

Greetings, I am just confused in something , Is there a difference when calculating the electric field , or a force exerted on a charge between two plates , if the two plates were : a) both plates are charged ( connected to a power source) , OR b) both plates are charged...

Homework Statement *Is the a difference when calculating the electric field , or a force exerted on a charge between two plates , if the two plates were : a) both plates are charged ( connected to a power source) , b) both plates are charged ( connected to a power source), but the negative...

Hello. I just want to know if you guys know a website, place, or store where you can use their apparatus and work on a stainless steel plate? Right now I'm planning to create a Hydrogen generator using water with catalyst. Thank you.

If both the plates of a capacitor are connected to positve voltage, (but has a potential differnce between them) will the capacitor be charged? And how?

Homework Statement Three conducting capacitor plates are kept horizontally, above each other with a gap 'd'. If a charge ##+1\mu C## is kept on the middle plate what is the charge on the plates? Homework Equations (This question is theoretical) The Attempt at a Solution My textbook gave the...

Homework Statement Between two plates (distant 4cm) there's an electric field (E = 100N/C). A proton starts moving from the positive plate and an electron starts moving from the negative plate. At what distance from the positive plate do they meet? (is "meet the right verb here? :biggrin:)...

Hi, I am interested to simulate the capacitor with plates having an angle of 195 degrees between them. https://dl.dropboxusercontent.com/u/32847378/cp1.jpg I know that if the angle between of plates is 180 deg, then electric lines of forces will follow a elliptical path and equipotential...

Let us take a charged capacitor and move the plates such that it the distance between them be constant. For example, one moves towards left and other moves upwards. Assuming only overlapping area affects capacitance... WILL THE CHARGE STORED IN CAPACITOR CHANGE? I know the capacitance changes.

Homework Statement A charged ball of mass 0.2[gr] and q=6E-9[Coulomb] hangs on a string between 2 plates that are 5[cm] apart. the ball makes 300 with the vertical. what is the voltage difference of the plates. Homework Equations Electric field: $$E[\frac{N}{Coulomb}]=\frac{V}{S[m]}$$ The...

Homework Statement Two large plates are parallel and close to each other, vacuum is between them. they are held at 2000K and 3000K. What is the energy transfer rate between them. Homework Equations The energy emission rate per unit area-the Stefan-Boltzmann Law: $$R=\varepsilon\sigma T^4$$...