Plate Definition and 1000 Threads

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.

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  1. mishima

    Food Hot Plate vs Science Hot Plate

    "Food" Hot Plate vs "Science" Hot Plate I want to pick up a cheap hot plate for doing high school level demonstrations in chemistry. Is there any reason getting a normal hot plate would be a bad idea? Like this one? Thanks.
  2. S

    Analytical solution for thermal stresses in a rectangular plate

    Hello everybody, I am solving a 2D problem of thermal stresses in a rectangular plate in which temperature is changing only y direction. Plate has fixed displacement conditions. Could anyone help me to find out analytical solution of thermal stresses for my problem? Does anyone suggest me...
  3. S

    Three Plate Capacitor and Force

    Homework Statement This is basically question 3.18 in Purcell. You have a plate being suspended into the middle of two other plates, and then you need to determine the force downward on the hanging plate given that the separation between it and either side of the other conductor is s; the...
  4. B

    Voltage, capacitance and EM energy of a parallel plate capacitor

    Homework Statement This is an EM waves class, but we are given the following problem, which seems deceptively simple. I'd like some feedback to see if this is done correctly. Homework Equations Consider a parallel plate capacitor connected with a resistor with resistance R, as shown in the...
  5. tomwilliam2

    Charge on a parallel plate capacitor

    Homework Statement If a parallel plate capacitor is charged with charge Q and -Q on its plates, respectively, and then isolated, then we place a dielectric into the space between the plates, does the charge on the plates decrease, or stay the same.Homework Equations U=(QV)/2The Attempt at a...
  6. U

    How Do You Calculate the Bounce Distance R(H, h) for a Marble?

    Homework Statement A marble has been dropped from a given height H + h. There is a metal plate directly below the marble at height h. The marble drops and hits the plate which is at 45 degrees and lands a distance away, R. Find an equation for R(H,h), that is finding the distance the marble...
  7. P

    How to determine the surface charge density for a parallel plate capacitor

    Homework Statement The problem statement is given in the figure below Homework Equations E=σ/(2* ε) The Attempt at a Solution The top plate is assumed to be negative charge. The bottom plate is assumed to be positive charge. Since negative charge pulls and positive charge pushes...
  8. T

    How Can Vibrations of a Thin Plate in Space Be Analyzed and Modeled?

    Hi, I'm triyng to model electric drive with a load in simulink. The load is a thin plate of a known dimensions, axis of rotation is passes through the center of mass parallel to the lower and upper edges. The motor is direct drive and moves the plate on a known angle with a known...
  9. K

    Earths core and mantle producing plate tectonics?

    If Earths core were larger taking up say 70% of its radius and the mantle were smaller. Would there be more or less plate tectonics?
  10. StevieTNZ

    Quarter Wave Plate: 45 & 135 Degree Polarization Output

    Hi there, If we have a quarter wave plate orientated at 45 degrees in reference to the incident light, if the input photon was 45 degrees polarised, what would the output be? Similiarily with 135 polarised photons? And what happens if the photon is written as -|45> compared to |45>? Does that...
  11. E

    Heat Transfer Rate of 2 Heating Coils on Aluminium Plate

    Homework Statement ==================== <---- aluminium plate ⁣⁣⁣⁣⁣⁢⁢⁢⁠⁡⁡⁢⁢⁢...O .....O... <---- heat coil(O) Given an aluminium plate put on 2 heating coil(O), assuming no heat loss, how much is the heat transfer rate from the coil to the plate? Put the power of each coil as W...
  12. U

    Heat transfer with a plate heat exchanger.

    First off, I can't believe I never decided to search for a forum like this, I love smart people! lol. Anyways I am working on a Liquid cooling project for a highly overclocked computer system. Originally I wasn't going to use a heat exchanger(Matter of fact, until I stumbled across one on a...
  13. T

    Fluid mechanics. Plate pulled within viscous fluid.

    Homework Statement I have the statement, variables and given/known data in the picture along with relevant equations and solution attempt. Homework Equations The Attempt at a Solution I think I did the first part right. But I'm unsure about part B. The distance between the...
  14. K

    Plate tectonics on exoplanets/moon.

    What would be the minimum mass for an exoplanet or moon to sustain plate tectonics? I would think its 0.2 Earth masses.
  15. A

    Electric field at point inside a parallel plate capacitor

    This doubt is nagging in my mind for couple of days,and its makes the rest of the things so dizzy and confusing.Heres what i thought- What is the electric field at a point inside a parallel plate capacitor? I thought of this-When i place a guassian surface of ,well maybe any...
  16. T

    What's this steel bearing plate going to do under this steel I beam?

    I'm doing some work on my house at the moment, and have had a design produced by a structural engineer for a steel I-beam to span a newly made (4 meter) opening in a brick wall. They've given me a design (see the attached picture for my interpretation) for the bearing of the I-beam which I...
  17. G

    How thick should a steel plate be to support a load of 1300 N in a 3 point bend?

    I'm using the basic deflection equation to determine how thick a plate of steel would have to be to support a load of approximately 1300 N in a 3 point bend, with surface dimensions of of 420 x 630 mm. I = bh3/12; δ = FL3/(C1EI); Esteel = 200 GPa = 200 N/mm; δ = 50 mm (arbitrary); h3 =...
  18. S

    Diffusion Equation on a plate - 2 dimensions

    Homework Statement The edges of a thin plate are held at the temperature described below. Determine the steady-state temperature distribution in the plate. Assume the large flat surfaces to be insulated. If the plate is lying along the x-y plane, then one corner would be at the origin...
  19. S

    Thermo-ish diffusion/wave equation - metal plate and temperature difference

    Homework Statement The edges of a thin plate are held at the temperature described below. Determine the steady-state temperature distribution in the plate. Assume the large flat surfaces to be insulated. If the plate is lying along the x-y plane, then one corner would be at the origin. The...
  20. A

    Do Plate Materials Affect Capacitor Performance?

    Hi I was wondering about an issue i thought about while attending a masters thesis dissertation earlier does the material of the plate (not the filling dielectric) affect capacitance (even if in the fringing level) ? Check the attached picture , for a better explanation
  21. C

    Changes in Capacitance During Discharge of Parallel Plate Capacitor

    Homework Statement I've been studying the changes in capacitance (presumably due to fringe capacitance) as a parallel plate capacitor discharges. The data is entirely as I would expect, excluding the last few data points, which were taken at voltages less than two mV. The capacitance shows...
  22. N

    Force on dielectric in parallel plate capicitor

    Force act on dielectric slab on inserting between the parallel plate = [8.85 * 10^-12]b(k-1)(V^2)/2d where b = width of the plate , d = distance b/w the plates , V is the constant potential difference across the plates and k = dielectric constant Which force is acting on dielectric...
  23. R

    Marine (nautical not marine corps) - forces acting on an interceptor plate

    Despite the name interceptor, this is marine as in water, not marine as in marine corps. Interceptor plate on a boat is like a horizontal flap (airbrake, alieron, elevator) on an aircraft but is mounted below the water. Usually it's a flat rectangle (not airfoil) that drops down from the bottom...
  24. 5

    How the find the temp of the middle plate

    Homework Statement We are having two the same metal plates. Plate one is having a temp of 127 degree celsius and plate two is 27 degrees celsius. Then a third plate, the same as the other two, is paced in the middle. What is his temperature? Homework Equations Don't really know. Maybe...
  25. W

    Conceptual Question on Parallel Plate Capacitors

    Homework Statement Two capacitors, C1 and C2, are separately charged to 166 C and 348 C, respectively. They are then attached in parallel so that the + plate of one goes to the - plate of the other, and vice versa, as shown on the diagram below (notice how C2 was rotated 180 degrees before...
  26. AGNuke

    Potential difference between two large plate changing with time

    The potential difference between two large parallel plates is varied as V=at; a is a positive constant and t is time. An electron starts from rest at t=0 from the plate which is at lower potential. If the distance between the plates is L, mass of electron m and charge on electron -e then find...
  27. U

    Parrallel Plate Capacitor Model Question

    Hello, i am new to the forums here so forgive me if I have mistakenly started a matching thread that already exists. So i have a task for building a parallel plate capacitor for two aluminum plates connected to a battery on opposite terminals. The target capacitance is 2000 microfarads. with...
  28. V

    Equilibrium Position of Charged Ball near Charged Plate

    Homework Statement A small positively charged sphere of mass m is attached to a very large positively charged vertical plate by a string and hangs due to gravity. The charge density on the plate, σ, is uniform. a) Calculate the equilibrium position of the ball as a function of the (uniformly...
  29. A

    Find torque in the x direction given moment of inertia tensor for plate.

    This is for prelim study. Just wondering if this solution is correct. Problem A thin homogeneous plate lies in the x-y plane. Its moment of inertia tensor in the x,y,z basis is given by \textbf{I}=σl^{4}\begin{pmatrix} 2 & -2 &0 \\ -1 & 2 & 0 \\ 0 & 0 & 4\end{pmatrix} If the plate...
  30. T

    Electromagnetics - parallel plate capacitor energy storage

    Electromagnetics -- parallel plate capacitor energy storage Homework Statement A parallel-plate capacitor 0.5m by 1.0m has a separation distance of 2cm and a voltage difference of 10V. Find the stored energy, assuming that ε=εo. If a 200-volt potential is applied in the capacitor, (a)...
  31. ArcanaNoir

    Math-y or Nerdy License Plate Ideas

    It's that time of year again...time to renew my license plate! I currently have a generic one. Boring! So I'm trying to think up a new one. Some ideas I've thought of or heard: LIMSUP, LIMINF, RLANLYS, PR MTH, AXMFCHC. So I like math. But anything geeky could work. Ideas anyone? (Limit to 7...
  32. N

    Parallel plate conductors question

    Homework Statement "An electron is fired from a negative plate towards a hole in a positive plate. It then passes between two parallel plates that are 3 cm long and 2 cm apart with a voltage of 550 volts across them. If the accelerating voltage across the two original plates is 900 volts what...
  33. P

    Homework help:Heat transfer coefficient of flow over a flat plate

    A 2-m x 3-m flat plate is suspended in a room, and is subjected to air flow parallel to its surfaces along its 3-m-long side. The free stream temperature and velocity of the air are 20oC and 7m/s. the total drag force acting on the plate is measured to be 0.86N. Determine the average heat...
  34. P

    Hi ,i need books, sites about Mindlin's Theory for thin plate

    Hi ,i need books, sites... about Mindlin's Theory for thin plate Hi , i need books, sites... about Mindlin's Theory for thin plate (Vibrations). Thanks pmcr
  35. K

    Non uniformly charged circular plate

    Homework Statement Find the electric field above the center of a flat circular plate of radius a when the charge distribution is br^{2}δ(z) for r≤aHomework Equations The Attempt at a Solution i didn't get the intgeral resulting form coulomb's law working, so i tried with the potential, the...
  36. J

    Convection over plate (top and bottom)

    Homework Statement Consider a flat plate subject to parrallel flow (top and bottom) characterized by u∞ = 5 m/s and T∞ = 20°C. Determine the average convection heat transfer coefficient and convective heat transfer rate with an L = 2m long and w = 2m wide flat plate for airflow and...
  37. T

    Plate Boundaries: Collision, India & Himalayas

    Hi. I am confused about plate boundaries. In school we always drew diagrams where the continental crust sat on top of the oceanic crust. With that in mind, what is a collision boundary? Is this where continental crust sits on top of the mantle? How did India collide with Asia? Is the Indian...
  38. N

    Pith ball and parallel plate capacitor prolem

    Homework Statement A 10 gram pith ball having a charge of 1μC is electrostatically attracted to one of the inside surfaces of a large parallel plate capacitor by an electric field between the plates. The plates are vertically oriented so that the electric field between the plates is...
  39. K

    Solving flexural rigidity of a composite plate

    Hi there, I need help about how to solve the flexural rigidity (D) of a composite. For instance, if I have two plies of a plate each with different material properties, i.e. ply 1 has different Young modulus from ply 2. Therefore, how can I determine the value of the overall D of the plate...
  40. S

    Parallel plate capacitor by an electric field between the plates

    Homework Statement A 10 gram pith ball having a charge of 1μC is electrostatically attracted to one of the inside surfaces of a large parallel plate capacitor by an electric field between the plates. The plates are vertically oriented so that the electric field between the plates is...
  41. M

    I with understanding of Inertia of a slender rod and plate?

    Hello, Before I get barraged with comments about this being a homework question it isn't. It is about helping me understand inertia. I am trying to understand how to chose which form of equation for the rod and which form of equation for the plate in the diagram attached. Am i right in...
  42. E

    Parallel plate waveguide, step discontinuity

    Hello! You can find in the picture attached a parallel plate waveguide which has an a1 height before the step and an a2 height after the step. The plates are perfect conductors and the step is ideal. I can't determine which physical quantities are continuous across this discontinuity. Suppose...
  43. A

    Field of the parallel plate capacitor

    Homework Statement A vacuum parallel plate capacitor is given. Its plates are of thickness h, width L (in the plane of the figure) and their distance is D. The plates of the capacitor are perpendicular to the plane of the figure, which is at the same time the symmetry plane of the...
  44. I

    Standing waves on a circular plate.

    Suppose I have a rigid circular metal plate that takes sound X microseconds to cross. What frequency would I have to vibrate that plate to get standing waves that form seven concentric circles? The obvious answer is 14X but I'm not sure. BTW, this is not homework.
  45. T

    Parallel plate capacitor with two dielectric materials?

    Homework Statement Use Gauss' law to find an expression for the electric field within a charged parallel plate capacitor with two layers of dielectric materials (?r1 and ?r2). (See attached image, this is for question 2a). The Attempt at a Solution My approach would be to split the...
  46. P

    Plate four points bending equation for a plate

    Hello, I am no mechanical engineer and my knowledge in bending is limited to Euler-Bernouilli beam theory. I wish to analytically calculate the normal stress of a plate bent by four points bending. I have already calculated this stress for a beam. However I cannot apply the beam theory...
  47. L

    Falling mass onto flat plate pressure exerted

    Homework Statement hi I'm trying to design a small experiment based on soil pressure i've not had much use of some of the equations and principles for a few years so I'm a little rusty basicly I'm trying to exert pressures onto grass seeds (lolium perenne) in a rough field experiment in...
  48. F

    Second Moment of Area Problem for Floor Plate with Cross Beams

    Homework Statement So I need to know how to attack a problem for a solid metal plate. The plate is used as a manhole cover, so it needs to withstand a certain load. The load is calculated by placing a large weight at the centre of area 25x25. I can't for the life of me figure out how to do...
  49. K

    Conceptual problem regarding parallel plate conductors

    Homework Statement if two plates are kept parallel P1 and P2. one has a charge (q)..the outer surface of this plate has a charge let's say (x) thus the inner surface has a charge (q-x)..this (q-x) induces an opposite charge -(q-x) on inner surface of P2. the outer surface of P2 is grounded...
  50. S

    What is the force exerted on a point charge in a parallel plate capacitor?

    Homework Statement In a region of space between the plates of a parallel plate capacitor 14.0 cm apart, the electric field is 5.50 V/m everywhere. What force would be exerted on a point charge of charge value 2.50 C located 1 cm below the positive plate? 1 cm above the negative plate...
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