As minor planet discoveries are confirmed, they are given a permanent number by the IAU's Minor Planet Center (MPC), and the discoverers can then submit names for them, following the IAU's naming conventions. The list below concerns those minor planets in the specified number-range that have received names, and explains the meanings of those names.
Official naming citations of newly named small Solar System bodies are approved and published in a bulletin by IAU's Working Group Small Body Nomenclature (WGSBN). Before May 2021, citations were published in MPC's Minor Planet Circulars for many decades. Recent citations can also be found on the JPL Small-Body Database (SBDB). Until his death in 2016, German astronomer Lutz D. Schmadel compiled these citations into the Dictionary of Minor Planet Names (DMP) and regularly updated the collection. Based on Paul Herget's The Names of the Minor Planets, Schmadel also researched the unclear origin of numerous asteroids, most of which had been named prior to World War II. This article incorporates public domain material from the United States Government document: "SBDB". New namings may only be added to this list below after official publication as the preannouncement of names is condemned by the WGSBN.
Homework Statement
Hi everyone, I'm new here at posting but have found this forum very useful in the past. I have hit a snag with a capacitor problem... any thoughts?
Assume you have a parallel plate capacitor separated by one cm of air and one cm of a dielectric with a dielectric constant of...
I'm doing stress analysis on a circular region on this part where an o-ring seals against.
There is a 7500 PSI normal force being applied on it.
So you can think about it as an annular circular flat plate (like a washer) with the 7500 PSI force uniformally distributed on the surface.
I want...
Homework Statement
A charged plate (record) is rotating with frequency "f". What is the magnetic field generated in the middle of the record?
Homework Equations
R...radius
f...frequency
Q...electric charge
B=?
The Attempt at a Solution
My idea was that the field in the middle is...
Hi,
I have a capacitor in which the first plate is connected to 3.3V and the second plate is connected to ground.
A third plate which is connected to 2.5V is inserted in between the two plates.
Will the capacitance between 3.3V and ground remains? If yes, will it be larger?
Thank you...
There's a circuit with voltage source V resistance R and current i.
One section of the circuit has a conductive 'plate' element, connected like this:
-----wire-------metal plate------wire----rest of circuit
How does the current through the plate vary within the plate? I'm fairly...
http://en.wikipedia.org/wiki/Drag_coefficient
from wikipedia, it is written 1.98-2.05 for flat plate perpendicular to flow(2D) , but I have a differrent b/h ratio plate, where h=157mm and b=816mm , b/h=5.197
how to get the drag coefficient in this case?
Thanks.
A very, large, thin conducting plate lies in the x-y plane. The plate carries a current in the y direction. The current is uniformly distributed over the plate with σ amperes flowing across each meter of length perpendicular to the current. Use Ampere's Law to find the magnetic field at some...
I have performed the Millikan oil drop experiment, but after a acquiring data for 14 drops it was impossible to collect anymore data because the drops would keep moving out of view under the influence of an electric field.
The thing is I made sure that everything was as level as possible and I...
Hi everyone,
Hoping someone can point me in the right direction.
I'm trying to find (a theoretical approximation of) the flow rate through a pipe where the pressure is provided by an axial flow impeller, but restricted by an orifice plate.
I have (or can get hold of) all the physical...
Homework Statement
Charge is distributed uniformly over the surface of a very large thin
insulating plate to a density of 5.00 x 10–6 C/m2 . An insulating string
connects a tiny charged bob to the vertical plate as shown in the
diagram. If the mass of the object is .001 g and the string...
Ok I took E&M about 3 years ago and decided I needed to review it. I'm up to gauss' law and am getting confused about one thing. If you have two infinitely long oppositely charged plates, solving for the total e field inside is done by making two gaussian surfaces that enclose each plate. Doing...
If you have a simple circuit with only a battery and a parallel plate capacitor with a dielectric, what exactly happens when the battery is turned on?
Also, if the voltage of a capacitor with a dielectric is less than the EMF of the battery, what happens to the rest of the voltage?
One...
Homework Statement
A parallel-plate capacitor is charged by being connected to a battery and is then disconnected from the battery. The separation between the plates is then doubled. How does the electric field change? The potential difference? The total energy? Explain your reasoning...
Homework Statement
How does a parallel plate capacitor work (conceptually)? Also how does each plate get charged?
Homework Equations
The Attempt at a Solution
Homework Statement
A 5800-nF parallel plate capacitor is connected to a 14-V battery and charged.
What is the charge Q on the positive plate of the capacitor?
Homework Equations
C = Q/V
The Attempt at a Solution
This looks like a very simple question. The capacitor is fully charged...
I have a question. I am working on a small project for class. We have locking Geneva mechanism that turns a table made of cast iron 72* in .5 seconds. The table mass is calculated to be 7300 kg (D=1.25m, h=.350m).
Based on the 72* in .5 seconds, I calculated alpha to be 10.08 rad/s^2...
Hi community member,
Regarding the book that I'm reading original writer has used Ni = ai + bi*x + ci*y shape function for the formulation of stiffness matrix for thick triangular plates.
The writer has not mentioned in the article that the resulting stiffness matrix is required to be...
Homework Statement
Two parallel plates, each having area A = 3118cm2 are connected to the terminals of a battery of voltage Vb = 6 V as shown. The plates are separated by a distance d = 0.35cm. You may assume (contrary to the drawing) that the separation between the plates is small compared...
A parallel-plate air capacitor is made by using two plates 16 cm square, spaced 3.7 mm apart. It is connected to a 12-V battery. What is the capacitance? What is the charge on each plate? What is the electric field between the plates? What is the energy stored in the capacitor?
What I...
http://img94.imageshack.us/img94/4392/ppcapqs2.png
http://img267.imageshack.us/img267/5059/ppcapqs1.png
In this question the charge is calculated by isolating Q in E=surface charge density/absalon not
My question is, the electric field of an infinite charged plane is E=surface charge...
Why is it that the field magnitude between two plates in a parallel plate capacitor is given by q/(εA)? In my book it is stated that one plate is of charge +q and the other -q. But if each plate is charged, wouldn't you need to account for the electric field produced by both places making...
Homework Statement
Consider a parallel plate air filled capacitor with plate area 10cm2
seperated by a distance 2mm.The potential difference across the plate varies
as V=360 sin(2π 106t) volts, where t is in seconds.Neglecting
the fringe effects calculate the displacement current flowing...
Two parallel plates are 2.0 cm apart and the electric field strength between
them is 1.0 × 10^4 N/C. An electron is launched at a 45 degree angle from the
positive plate. What is the maximum initial speed v0 the electron can have
without hitting the negative plate?
i think the answer is...
Homework Statement
An infinite sheet of charge that has a surface charge density of 25.9 nC/ m2 lies in the yz plane, passes through the origin, and is at a potential of 1.32 kV at the point y = 0, z = 0. A long wire having a linear charge density of 81.1 nC/ m lies parallel to the y-axis...
Homework Statement
This is problem 13.2.2 in Mathematical Methods in Physical Sciences by Mary Boa.
Find the steady state temperature distribution using the Laplace Equation on a semi-infinite plate extending in the y direction with the following boundary conditions:
On the lines y =...
Hello, I’m trying to solve the following problem: a composite plate with circular steel in the lower left corner. The upper and lower surfaces are insulated, on the right the temperature is constant, and on the left exits natural convection. The analysis is steady-state.
I’m using a...
Consider the system on the attached picture showing a rectangular plate attached to a pole by two screws - one in A and one in B. Now to figure out the condition for equilibrium one would calculate the torques around point A and B to find that one screw must be pulling and the other one pushing...
hi all,
I've created the small program which deals with the calculation of plate bending with quadrilateral finite element, program is written with Fortran. I've included all the source files that need to compile the program ,I've even added the executable file (along with input file...
I have to simulate in Matlab the variation of temperature in a metal plate/block, heated at just one end. One suggestion I received is that I have to use partial differential equations and the energy balance law but I don't know how to start. I study computer science, so physics is a bit off to...
Three boards are in the x axis. the middle one is in x=0 and charged in a positive sign density is: σ. the other 2 boards are in : x=d and x=-2d. This 2 boards are grounded. The area of the boards is A (A>>d).
I found that on the middle plate the charge is divided in 2:1 ratio: The electric...
Homework Statement
Hi all, I was wondering if anyone can help with this?
A uniform Steel strut (material Modulus of Elasticity 210 GN/m2, Poisson’s Ratio 0.3) of length 400mm and width 80 mm is restrained as appropriate at one end and under an axial tensile load of 20 KN applied to the...
hi,
I'm studying the book for elasticity theory and I stuck at one of the equation in that book, the stiffness matrix for elements(thin or thick plate) in bending is given in that form
ke= t∫∫BT*Db*B*det(J)dζdη+∫∫BT*Ds*B*det(J)dζdη
B is the strain matrix(5x12) where the inner...
Hello,
I am trying to determine the calculation to use to determine the force at which a disk plate will fail for the following set up.
The disk is slid onto a metal bung for a roll, the disk is supported from the inside diameter for around 50mm. A force is then applied on the oppsite side...
Show that the work done by the driver plate during a stress accumulation phase is W=\frac{2m2g2fd}{k}(fs-fdI'm not sure where to start with this. I am given several equations but can't reach the desired equation.
Fn=ρghA
m=ρA3/2
θ=\frac{fs}{fd}
X=\frac{xG}{2fsρghA1/2}...
Dear all,
I would like to know from you the solution about this problem (which is not a homework, but a topic of my Master thesis!): I need the strain energy density related to a circle of radius r0 centered in an arbitrary point of a square plate, under the boundary conditions described in...
i don't know if i am in right part of forum.
i want to build some sort of wind turbine for a school project. all the diy project are 6 or 9 coils with 8 or 12 magnets. the coils are on non magnetic board and the magnets on steel plate.
why on steel, the steel plate increase the total...
Hey Guys,
I really did my best to locate the best sub-forum for my question (I was hesitating between the Homework one and this one), so please bear with me if my choice is wrong ...
Now to my question: So in my kitchen, I have a hot plate appliance, and it says on it that power...
A child with poor table manners is sliding his 240 dinner plate back and forth in SHM with an amplitude of 0.120 on a horizontal surface. At a point a distance 7.00×10−2 away from equilibrium, the speed of the plate is 0.370 .
(a) What is the period
(b)What is the displacement when the speed...
Hello All.
I'm trying to evaluate a design based on first principles.
I have 2 trusses made from RHS (simple A frame) between which I wish to tech-screw a sheet of 2.9 mm galvanised sheet.
Loading will primarily be from material (i.e. soil to a max depth of 400 mm) being placed on the...
Homework Statement
a parallel plate capacitor of 10pF is charged to 10kV ( air dielectric). It is then isolated from battery.The plates are pulled away from each other until distance is 10 times more than before. what is the energy needed to pull the plates.
Homework Equations
c=εA/d ...
Homework Statement
I have a circular plate made of some metal and it is shaped like the equation x^2 + y^2 \leqslant 1
The temperature at any given point in this plate is given by the function T(x,y) = x^2 -x+2y^2
I'm supposed to find the hottest and the coldest points.
Homework...
Just wondering if the formula C=εA/d is a realistic formula for a parallel plate capacitor, surely its making an approximation about the plates being HUGE or that at the edges the electric field doesn't go in nice straight lines from one plate to the other?
If it is an approximation does...
1. An experiment is run to determine the validity of numerous electrostatic principles. A small ball of mass 6.50 x 10-3 kg with a charge of ±1.50 μC is suspended from a non-conductive wire and hangs between two parallel plate capacitors. An angle of 30.0° is measured between the wire and the...
Homework Statement
The problem wants us to develop an equation for velocity distribution and the mass flow rate of a fluid, flowing between 2 parallel plates:
The distance between the two plates is a.
The top plate is maintained at constant T1; the bottom plate is maintained at...
The Asthenosphere and Lithosphere
We can all agree that the Earth is rotating on its axis, making one rotation about every twenty-four hours. We can also agree that the Earth is revolving around the sun in its happy 364-day elliptical orbit. Correct? But why? We have proof to support these...
Homework Statement
A zone plate is to be set up on an optical bench, where it will be used as an enlarging lens. Its innermost zone is to be 0.2250 mm in diameter and monochromatic blue-green light of wavelength 480 nm from a cadmium arc is to be used. If the magnitude of the enlargements is...
Homework Statement
Dual plate capacitor with two dielectric slabs placed between the capacitors and a battery supply's a voltage across the capacitors. The slabs are not equal in dielectric permeability. What is the charge at the interface of the two slabs?
Homework Equations
The...
Hi :)
Well this is my first post here in the forum, I hope I put it into the right category.
Im hoping that someone here might be able to help me with a little problem that I can't find the solution to. I am not a lab geek, unfortunately but I am trying to describe a process where I found...
Homework Statement
A capacitor is charged with some potential difference. A charge will developed on both of it's plates. Now remove this capacitor from battery and ground/earth one of the plate through a wire. What will happen??
Homework Equations
gauss law
The Attempt at a Solution...
Homework Statement
Toby is on a merry-go-round. The coefficient of static friction between his feet and
the merry-go-round is 0.5. Toby is located 2 m from the center.
a. Once Toby starts to slide he is going to slide outward until he falls off the merry-go-round at radius = 3m. How...