# plates

1. ### Question about perminant magnetic fi induced in steel plates by current carrying wire

I'm relatively new to picking up advanced physics as a hobby, currently on special relativity and field theory, and I was hoping to help explain something to my brother. He's interested in a phenemonon possibly discovered by someone living in florida in the 20-50s named Ed Leedskalnin, who...

ty
3. ### What is the electrostatic energy between two charged plates?

Electrostatic energy = kq1q2/r Or U = qE?
4. ### flow in parallel plates

Hello to everyone, I am attending a course of advanced fluid mechanics and i was given the following exercise in the attached picture which from what i understand should not be so tough. But since my knowledge is still very restricted, i had only basic fluids some years ago, how should i...
5. ### Parallel Plates Electric Field

Hello, I wonder if anyone could check my answer to this problem. Thanks in advance An electron is liberated from the lower of two parallel plates separated by a distance of 5mm. The upper plate has a p.d. of 1000v relative to the lower plate. How long does it it take for the electron to reach...
6. ### Electric Fields and Parallel Plates

Hi there, I was wondering if someone could check my answers to this past examination question. Thanks in advance. A negatively charged oil drop, mass 2.4 x 10^–12 kg, is stationary between two horizontal metal plates spaced 1 cm apart. Find the number of electrons (to the nearest whole...
7. ### Polarized Plates

We want to rotate 90 ° to the direction of polarization of a beam of polarized light causing it to pass through one or more polarizing plates. (a) What is the required number of plates? (b) What is the required number of plates so that the transmitted intensity is more than 60% of initial intensity?
8. ### acceleration of electron in between charged plates

dear.if the x-component and y-component of velocity is given i.e Vx &Vy.and E (electric field) is also given. then what equation should i use to find acceleration of the electron. i only know about E=F/e(relation of electric field and force) F=ma.if i want to find the "acceleration" if Vx ,Vy...
9. ### acceleration of electron in between charged plates

dear.if the x-component and y-component of velocity is given i.e Vx &Vy.and E (electric field) is also given. then what equation should i use to find acceleration of the electron. i only know about E=F/e(relation of electric field and force) F=ma.if i want to find the "acceleration" if Vx ,Vy...
10. ### velocity of electron moving between charged plates

whts the relation of velocity V and electric field E??? i only know about E=F/e(relation of electric field E and Force F) any one like to answer???
11. ### electric field between two plates

Two 10 cm x 10cm square plates that are charged with ±12 nC and are 6 mm apart. What is the magnitude of the electric field between the two plates? I need help setting up this problem because I honestly have no idea where to start and didn't see any similar problems in my physics book. Any...
12. ### parallel plates

I dont know where to begin with these one could somebody help me with it (Sweating) Two large, parallel metal plates carry opposite charges of equal magnitude. theyh are separated by 45mm and the potential difference between them is 360 volts. a) what is the magnitude of the electric field...
13. ### Force between capacitor plates during seperation.

A capacitor consists of two metal plates in air. the distance between the plates is 0.005m and the capacitance is 72pF. the potential difference between the plates is raised to 12.0V by a battery. the battery is disconnected and the distance between the plates is increased to 0.01m. what is the...
14. ### Force between parallel plates in a capacitor

Hey guys. So, I got this problem. According to their hint I'm suppose to calculate the work of moving one of the plates and from their, get to the force. I don't have a clue how to do that. I can't find a single formula that can help with that. Can I please have some help...?(Smile) Thanks.
15. ### Charged Plates

Please explain and solve the questions a and b, thank you...
16. ### Movement of an electron between two plates

Hey guys. Where is the force which is created by the electric field, directed to? I think it's towered the bottom plate but I'm not sure. 10x.