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. G

    Flat plate, circular hole center of mass

    Homework Statement A uniform flat plate of metal with a circular hole, where it is a rectangle starting from -6 to 7 from the length, and the height is -3 to 3. The circle has a radius of 2, and it starts at 1 to 5. Calculate the x-coordinate of the center of mass xcm of the metal plate...
  2. C

    TLC plate in regards to polarity

    I used a "normal" phase alumina TLC plate with 20% (v/v) dichloromethane/hexanes. I found the substance that traveled the furthest to be the most polar one (though the substance is not very polar, xanthohyll). Why would this be? I was under the impression that since the plate is polar and a...
  3. K

    Application of Gauss' Laws: Large area parallel plate capacitor

    Homework Statement The plates of a large area parallel plate capacitor of area A are separated by a short distance. The plates carry an equal but opposite charge \pm q. (a) What is the electric field strength E(q,A) inside the capacitor? (b) By how many percent does the electric field...
  4. E

    Equation of a Plate: Wave Equation for Road Impact

    Hey, does anyone have any ideas how to formulate the wave equation for a road subjected to a singular impact?
  5. C

    Average Shear Stress on a Plate

    1. Problem Statement The long bolt passes through the 30-mm-thick plate. If the force in the bolt shank is 8kN, determine the average normal stress in the shank, the average shear stress along the cylindrical area of the plate defined by the section lines a-a, and the average shear stress in the...
  6. F

    Will a 304 SST Plate Bend Under a 460 Lbs Load at a 21 Degree Angle?

    So I have a plate connected to a metal wall that is riveted to the wall with 5 rivets. This plate then has a ball joint connected to the one end which has a load of 460 Lbs. at a 21 degree angle. All the drawings have been attached. I need to prove that the plate will indeed bend under such...
  7. P

    Parallel plate capacitor with dielectric. Find capacitance

    Homework Statement The plates of a parallel plate capacitor measure 15cm x 15cm, and they are separated by 6cm. The capacitor is charged with a potential difference of 18V, then removed from the voltage source and kept isolated. A 15cm x 15cm x 3cm slab of dielectric material (k = 2.5) is...
  8. Z

    What is the moment of inertia of the plate about z axis?

    Homework Statement What is the moment of inertia of the plate about z axis? Homework Equations The Attempt at a Solution Consider the isosceles triangle to be a part of a square of side l/root(2) Its mass will be 2M We know that its moment of inertia about the centre...
  9. M

    How to Size a Flat Plate Solar Collector for One Hot Shower per Hour?

    Homework Statement We wish to size a flat plate collector to provide water for one hot shower per hour. We have determined that a shower uses 80 liters of 40°C water that has been heated from a 15°C supply line. The receiver temperature must be greater than the desired water temperature of...
  10. T

    Aligning 3 point plate - vector cross product useful?

    Homework Statement Hello, I have a plate that needs levelling. I can only twist the back 2 feet threaded feet, while the single front foot is fixed, as in the diagram: As mentioned above I can only TWIST the back two feet (separately or together) causing the plate to tilt around the...
  11. A

    Got my Thank you for your Service Lic Plate

    Got my "Thank you for your Service" Lic Plate today I got my state Disabled Veteran Tag. Not for vanity reasons, though a lot of veterans get various veterans tags for that purpose. I have nothing against it. But the DAV tag and a few others have a very special purpose, and why they have...
  12. A

    What is the Energy Stored in a Parallel Plate Capacitor?

    Given: There are two parallel plates. The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The magnitude of the electric field between the plates is 100 kV/m. The plates each have an area of 2 × 10-3 m2, and the spacing...
  13. D

    Parallel plate capacitor book problem

    Homework Statement Two parallel plates 0.700 cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at the surface of the positive plate. How far from the negative plate is the...
  14. S

    Speed of sound through a plate

    Speed of sound through a plate! Hi, I wanted to know the formula for the transverse velocity and longitudinal velocity of sound through a rectangular plate. Any help will be greatly appreciated!.. Thanks
  15. K

    Cantilever Effect on Different Thickness Plate

    I'm working on some stress analysis for work. I'm analyzing the design of a plate, part of which is meant to deflect under a load. Due to this sheet metal plate being somewhat non-straight forward geometry, calculating correctly is a bit tricky. I'm putting an undercut into the plate to allow...
  16. P

    What is the speed of the electron as it strikes the second plate?

    Homework Statement A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 2.6 cm away, in a time 3.8 x 10-8 s. (a) What is the speed...
  17. D

    Orifice plate study in water tunnel

    I am tasked to design an orifice plate to be inserted into a water tunnel in an experiment and do a research on the dynamics of the fluid movement. The problem is that the currently water tunnel facility is already available in my lab. The water tank is very similar to a normal aquarium tank...
  18. R

    Plate deflection theory vs FEA: same problem, same parameters, different results

    Hello. I'm trying to simulate a plate deflection using finite element analysis software ALGOR. Previously I made analytical calculations and I got the maximum deflection like this: (My plate is simply supported on all edges, so I used Navier's Method. Got the theory from Szilard's Theories and...
  19. K

    Magnitude of the charge on each plate

    Homework Statement A small plastic ball of mass 9.51 X 10^-3kg and charge of +0.206 micro Coulombs is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, with the thread making an angle of 30.0 degrees with respect to the vertical. The...
  20. Q

    Resonant modes of simply supported square plate

    I did this in ANSYS, but I am wondering what is the analytical solution to this. Does anyone know?
  21. M

    Optimizing Plate Surface for a Weighted DC Motor

    Hey guys, I have a DC motor and i want to glue to it's rotor a round plate (make a hole through it and stick the rotor in that hole :) )(consider the plate weightless) and on this plate i will glue a weight, doesn't matter what the weight is...just know that it's constant. My question is this...
  22. B

    2 Dielectrics in a Parallel Plate Capacitor

    So, I know what happens with the first two cases, but what if the dielectrics are on a diagonal?
  23. Crowxe

    Trapping Iron Plate Motion Using Magnetic Shield

    An iron plate would glide through magnetic field lines from the more separated towards the more condensed of a permanent magnet. If we use a magnetic shield to make a trap where that iron plate finds itself in dead area (no magnetic field lines) then it would continue the motion it gained...
  24. A

    Capacitor of different plate dimensions

    1. Is it possible to calculate the capacitance of a system where the top plate has the dimension d1 and the bottom plate has a dimension d2 and d1<<d2. Now, the difference between the plates are t. Is it possible to calculate the capacitance of this system where the dielectric is oil? 2. In...
  25. J

    2d temperature in a plate using Matrix Inversion and MATLAB

    Hi, I think i should have posted here instead of where I posted before. I don't know how I missed the homework help section... anyway Well, I'm required to solve this heat transfer problem. T1 is 25c and q'' is 100w/m2 Ok, so I can get it to do it in 1 dimension and my numbers...
  26. M

    Have You Explored Orifice Plate FlowMeters in Pipe Research?

    Hello People, I was just wondering if any of you done any similar investigation on the following topic. Basically, i currently doing a research on orifice plate in a pipe. It would be great if you guys know any journals that i can refer to.
  27. T

    Finding Fluid Force on Plate Submerged in Fluid

    2. A plate shaped as in the figure [picture.jpg is attached] is submerged vertically in a fluid as indicted. Find the fluid force on the plate if the fluid has weight density 62.4 lb/ft^3 The integral I set up was the limits being -5 to -1 and the integral being (5-y)(-7/4y - 7/4) dy...
  28. S

    Dielectric in parallel plate capacitor

    Homework Statement Two capacitors, identical except for the dielectric material between their plates, are connected in parallel. One has a material with a material with a dielectric constant of 2, while the other has a material with a dielectric constant of 3. What is the dielectric constant...
  29. S

    Simple parallel plate speed of charge question

    Homework Statement An alpha particle of +2 elementary charge and mass 6.7*10^-27 can be given some speed by placing it at rest on the positive side of the parallel plate. Ignoring gravity effects what speed does the partial have when it reaches negative plate. Homework Equations...
  30. S

    Voltage caused by change in capacitor plate seperation

    Homework Statement A parallel plate capacitor having two square plates each of side length 10mm has a plate separation of 100μm. It is used to make a microphone where the sound waves cause the plate separation to change by +/- 10μm. The microphone capacitor is connected in series...
  31. L

    Solving Electron Deflection in a Parallel Plate Apparatus

    Homework Statement Question Reads: An electron enters a parallel plate apparatus 10 cm long and 2.0 wide, moving horizontally at 8.0 10 ^7 m/s. if the potential difference across the plates is 600V, determine a) the vertical deflection of the electron from its original path...
  32. U

    Small Reynolds Number Flow around Flat Plate

    Hello, I have a problem I am trying to model analytically (please note: I am NOT a fluid mechanics expert -- I come from a chemistry background): A semi-infinite plate is oriented axially in the direction of flow. Please refer to the following page for an illustration of my problem...
  33. P

    What's the best way to make a warm metal plate?

    As the title says (and yes, I know it sounds a bit weird), what's the best way to make a warmable metal plate (70*45 cm big), using electrical warming? I've been thinking about using induction heating to make the plate warm, but I don't know the best way to do it. It should be battery driven and...
  34. I

    Energy Lost when Steel Sphere collides with a soft plate of material

    Hi everyone. This isn't a homework question; just something I was thinking about and would like some advice on how I should tackle it. Homework Statement How can I approximate the Kinetic Energy Lost of a Steel Sphere when it collides with a soft sheet of material. A solid steel sphere of...
  35. D

    Metal plate leaning against a wall

    Homework Statement A metal plate (with mass = 7kg and Length = 1.6m) is leaning against a frictionless wall and made an angle (Phi). The foot of the plate is made of circular edge that is situated at a V-grooved gap with angle (Theta). There are three normal force: F(wall) for the normal force...
  36. M

    How Does a Multi-Dielectric Parallel Plate Capacitor Calculate Its Capacitance?

    We have got a parallel plate capacitor . The distance between the plates is 2*h and each plate's dimensions are a,b . Between the plates there exists dielectric e1 in the volume 0<z<h and e2 in the volume h<z<2*h (out of the plates e0 ) , with e1,e2>>e0 . At z=h we place another plate with...
  37. GRB 080319B

    Why Does Placing a Plate Over a Horseshoe Magnet Affect its Magnetic Field?

    After a demonstration, my professor placed a metal plate over the two ends of a horseshoe magnet in order to prevent it from attracting other materials. I was wondering if this has to do with there being some type of "magnetic resistance" between the poles, where it is easier for the field to be...
  38. K

    Stress dtbn around Torqued hole in center of plate

    Anybody have an idea where I can find a theoretical solution for a torqued hole in the center of a flat plate or cube? I have looked at 5-6 stress mechanics textbooks but no luck. I ask because I want to verify the results of my Solidworks and Inventor simulation.
  39. A

    Can You Calculate the Charges on Capacitor Plates in a Series Circuit?

    Hi I have a question regarding the charge Q that would build up on capacitors in series when there is a potential difference between the plates. Consider the attached circuit. 1. Knowing the potentials \phi_A, \phi_B and the capacitances C_A, C_B, but not \phi_C is there a way of...
  40. M

    Paralle plate capacitor, LIH dielectric, fringing field

    Hey, all. If we partially introduce a linear, isotropic and homogeneous dielectric slab in a charged, isolated, parallel plate capacitor, we know that it experiences a forces pulling it into the dielectric, and we can obtain the expression of this force using energy considerations. However...
  41. T

    Modal amplitudes of circular plate

    Hi all, I'm a final year acoustics student in the UK attempting to model the modal response of a circular plate as part of my thesis. Essentially, i have this equation : and I am trying to deal with the left term of the LHS. I'm trying to find out whether the full version of...
  42. L

    Calculating Potential Difference and Work in a Parallel Plate Capacitor

    Homework Statement The area of the plates of a parallel plate capacitor is 1 m2, the spacing between the plates is 10 cm, the potential difference between the plates is 1500 V. After beign charged, the plates are disonnected electrically from the surroundings. The plates are then pulled...
  43. S

    Stored Energy in two Parallel Plate Capacitors

    Homework Statement The two-parallel-plate capacitors shown, C1=C and C2=KC, have identical plate area and plate separation. The switch S is closed, connecting the capacitors to a constant voltage power supply providing a potential difference of V. The capacitors are allowed to fully charge...
  44. Z

    Plate Capacitor: Distance Increases, C Decreases, V & Energy Increase

    Homework Statement charge a plate capacitor, disconnect the battery, increase the distance between the plates: capacitance decreases (C=keA/d, as d increases, C must decrease), V increases (q=CV, q is constant, C decreases, V must increase), electric field stays constant (E=V/d, both V and...
  45. T

    How Is Energy Loss Calculated in Connected Capacitors?

    Homework Statement A capacitor C1 (the one on top in the diagram) of capacitance 4 mu F is charged until its charge is 200 mu C and another capacitor C2 (the one below) of capacitance 3 mu F is charged until its charge is 300 mu C . Then both capacitors are connected in the circuit as shown in...
  46. R

    Hydrostatic pressure on triangular plate

    Homework Statement A triangle with base 3 m and height 4 m is submerged vertically in water so that the tip is even with the surface. Express the hydrostatic force against one side of the plate as an integral and evaluate it. Homework Equations \int_{a}^{b}{\rho}g(x)w(x)dx The Attempt at...
  47. T

    How Do You Calculate the Diameter of Plates in a Parallel Plate Capacitor?

    Homework Statement A parallel plate capacitor is made of two circular disks. The distance between the disks is very small compared to their diameter. Initially, the disks are electrically neutral. After transferring 3.9x10^9 electrons from one disk to the other, the electric field...
  48. S

    Square Plate Parallel, with angle, Capacitance Problem

    Given two parallel plates, length a. One being on the x axis, starting at the origin. The other starting a distance, d up the y-axis at an angle theta (parallel to the x axis), for theta being small. I need to find an equation for an approximation of the capacitance. I know that if the...
  49. S

    Distance of ions from photographic plate

    Homework Statement How far would the spot on the photographic plate be from the entry point for each ion, assuming that each ion completes half an orbit? I am given three ions, N+subscript2, O+subscript2, NO+ They have atomic masses of N=14.0031amu and O=15.9949amu. I am given the...
  50. P

    Understanding the Behavior of a Parallel Plate Capacitor: True or False?

    Homework Statement The diagram shows a parallel plate capacitor with plate area A and spacing d. The capacitor can be connected to a battery of potential difference V by closing the switch. Assume d² << A. 1. The force on plate 1 due to plate 2 is F = Q²/(4πε0d²) î, where Q is the...
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