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. B

    Parallel Plate Conductor Question

    Homework Statement There are 2 parallel plates of unknown area. The area between the 2 plates is completely filled with 150 kg of water. The capacitance is .3 mirofaradays. K of water is 120 and had density of 1000 kg/m^3. Also Eo = 9.1 x 10^-12 C^2/(NxM^2). Determine the distance between...
  2. T

    Archived Heat transfer calculation across a flat plate

    Heat Transfer Qts Engine oil at 60 oC flows over flat plate whose temperature is at 20 oC with a velocity of 2 m s-1. The length of the plate is 5m. What is the film temperature and the rate of heat transfer per unit width of the entire plate? Additional information (at the film temperature)...
  3. C

    Fluid pressure close to an accelerating plate

    Hi all, I need to calculate the pressure in a fluid at some fixed distance from a flat plate which is accelerating (normal to its surface) through a fluid. If you assume the plate to be infinite (i.e. a rigid half-space), then I think the problem can be formalised as a one dimensional...
  4. S

    Thin circular plate in pure bending

    Homework Statement Finding shear in terms of r My problem, is that i want t o find the shear force and if i want take a section , i need to know the reactions, but i can't find the value of reaction in terms of r I attached the problem (look at A) and my solution(in which i wasn't able to...
  5. F

    Electric field in parallel plate capacitor

    Homework Statement The parameters of an air-filled parallel plate capacitor are: d = 5mm and A = 500cm2. The charge of the electrodes are Q = 10nC and −Q. Inside of the capacitor in the middle point there is a point charge of 0, 02Q. Find the magnitude of the force acting to the point charge...
  6. D

    Calculating Moment Capacity of A36 steel plate

    I am using an 8" steel plate as a beam that will undergo moment forces and deflections. I am not sure how to calculate the maximum moment capacity of a plate like this. I think that the deflection would = Fb*L^3/(48*E*I). Does this look correct? I know how to calculate the max moment in the...
  7. M

    How to Calculate Final Charge on Capacitors Connected in Series?

    Homework Statement If a 3.0-μF capacitor charged to 40 V and a 5.0-μF capacitor charged to 18 V are connected to each other, with the positive plate of each connected to the negative plate of the other, what is the final charge on the 3.0-μF capacitor? a . 11 μC b. 15 μC c. 19 μC d...
  8. B

    Initial speed of proton between parallel plate=?

    Homework Statement So I just wrote my midterm in physics, and I was curious on how to do the last question. Parallel plates, length 5.5cm, Distance between them is 0.3 cm Electric Field (E) is 5.4x10^4 Asking what is the initial speed of a proton going through the parallel plates if it just...
  9. U

    E-B crossed fields parallel plate

    Homework Statement A parallel plate has p.d. V with one end 0V and the other +V. B-field of strength B has direction along plates. An electron is released from rest at 0V plate. Show that if V is less than e(DB)2/(2m) the electron will not reach the other plate. Homework Equations...
  10. M

    Plate conductor in electrostatic equilibrium

    Homework Statement A thin, square, conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 x 10-8 C is placed on the plate. Find (a) the charge density on each face of the plate, (b) the electric field just above the plate, and (c) the electric field just below the...
  11. V

    Buckling limit of a square plate over a circular hole

    Hi, I am carrying out a series of experiments which consist of a square plate object placed over a circular hole. The experiment is done in such a way that I can apply a point force at the center of the plate and see how much force is required to pull the plate through the hole. I should add...
  12. fluidistic

    Capacitance of a parallel plate capacitor with dielectrics

    Homework Statement I'm asked to find 1)The capacitance 2)The electric field 3)The surface charge density 4)The polarization charge at the interface between the dielectrics. Of 2 set ups. The first one is a parallel plate capacitor which is half filled with a dielectric ##\varepsilon _1## and...
  13. B

    What is the total charge stored by parallel plate capacitors?

    Hello, I am currently reading about what has been alluded to in the title of this thread. I attached a diagram, as it will be of some help. Okay, in my textbook it says: After the battery is attached to the circuit, the capacitors quickly reach their maximum charge. Let’s call the maximum...
  14. H

    Kinetic energy from plate A to plate B

    Homework Statement An electron acquires 3.45x10^(-16) J of kinetic energy when it is accelerated by an electric field in a computer monitor from plate A to plate B. What is the potential difference between the plates, and which plate is at the higher potential? Homework Equations...
  15. U

    Capacitance and E-field of a parallel plate capacitor

    Homework Statement The Attempt at a Solution I know that the E-field is definitely affected by the presence of the space charges. Since one side is positive, the positive charges in the air get pushed towards the negative plate. so Enet = Eplate - Echarges But the thing is...
  16. W

    Work done by E field to move electron from negative plate to postive.

    The facing surfaces of two large parallel conducting plates separated by 10.0 cm have uniform surface charge densities that are equal in magnitude but opposite in sign. The difference in potential between the plates is 500 V. An electron is released from rest next to the negatively charged...
  17. W

    Does Jupiters moon Io exhibit plate tectonics?

    From what i understand Io is extreamly active on geologically. So does it also produce plate tectonics?
  18. A

    Parallel plate - uniform electric field help

    Homework Statement A parallel-plate uniform electric field with a strength of 325 N/C is oriented as shown below. An electron (q = 1.6 × 10-19 C, m = 9.11 × 10-31 kg) is released (from rest) inside the field and moves 3.2 cm to the left. What is the final speed of the electron at the end of...
  19. W

    Find Center of Mass of Thin Plate in Region Bounded by y-Axis, x=y-y^3

    Homework Statement find the center of mass of a thin plate with constant density in the given region. region bounded by y-axis, x=y-y^3 ; 0<=y<=1Homework Equations x(bar) = (integral)(a to b) α(x) * x * (f(x) - g(x)) ---------------------------------- (integral)(a to...
  20. A

    Eliminate T to Show SHM of a Rectangular Plate

    Q:A rectangular plate of sides a and b is supended from a ceiling by two parallel strings of length L each(Fig). The Separation between the strings is d. The plate is displaced slightly in its plane keeping the strings tight. Show that it will execute SHM. Find the time period...
  21. W

    Find the center of mass of a thin plate of constant density

    Homework Statement Find the center of mass of a thin plate of constant density (δ covering the triangular region in this first quadrant between the circle x^2 + y^2 = 4 and the lines x=2 ; y=2. Homework Equations x^2 + y^2 = 4 and the lines x=2 ; y=2. The Attempt at a Solution...
  22. S

    Electrostatic force on a parallel plate

    I'm tasked to find the force one parallel plate exert on the other plate in a capacitor. somehow the force isn't just F=qE, where E=Q/2εA What am I missing here?
  23. 0

    (Very Basic) Movement of Charged Particles Through Parallel Plate Apparatus

    Homework Statement What is the electric potential two-fifths of the way through a parallel-plate apparatus (from the positive plate) if the plates have a total separation of 5cm and field strength of 5000N/C.Homework Equations Difference Potential Energy = Electric Field Strength x Distance V =...
  24. R

    Suction caused by an air jet acting on a plate, why?

    Homework Statement We set up in a lab a vertical pointing air jet giving a constant output and gradually increased the height of the plate above the jet whilst measuring the force upon it as imparted by the jet using a Newton-metre. At a big distance the air jet was imparting an upthrust on...
  25. E

    Beam welded to plate. Plate stress?

    I have a design where a beam gets welded to a plate. The plate is not against a wall or foundation, but for simplicity I can say that the edges of the plate are fixed. I am concerned about the stress in the plate, and the deflection in the beam. I have access to solidworks simulation, but I want...
  26. T

    Role of ground in charging a parallel plate capacitor

    I am new with the topic Capacitors .I have read that a capacitor can be charged in two ways .One using the battery which I understand .The other is by charging one plate and grounding the other plate .I am not able to understand how this is done . Suppose +q charge is given to a plate ,say...
  27. T

    Parallel Plate Capacitor having equal charges on plates

    Homework Statement Q .1 The plates of a parallel plate capacitor are given equal positive charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and on the outer surfaces? Q.2 Each plate of a parallel plate capacitor has a...
  28. W

    What is the Area of a Capacitor Plate?

    Homework Statement Homework Equations capacitance = charge/volt capacitance = Esub0 (side of parallel plates^2)/(distance apart) The Attempt at a Solution capacitance = (3*10^-6 C)/(150v) capacitance = 2 * 10 ^ - 8 F 2 * 10 ^ - 8 F = (8.85 * 10 ^ -12)(side of parallel plate) ^ 2/(.90...
  29. J

    If the positive plate on a charged capacitor will pass current to the negative

    ...plate of a different capacitor, why won't the positive end of a battery (lets say AA) pass current to the negative plate of a different AA battery. Does it have something to do with the chemical reaction that happens inside the battery?
  30. C

    The speed at which a proton strikes the positive plate (uniform electric field).

    Homework Statement Here is the problem given. The answer is E. Homework Equations No equations are given. Assumed use of standard equations for electric field and force involving electric field. The Attempt at a Solution I tried using a few equations (E = F/q0), (F = mv^2)...
  31. S

    Finding Kinetic Energy of Ions Leaving a Charged Plate

    I need to know how to find the kinetic energy of ions leaving a charged plate. I figure I can find the electric potential energy, but all i know is the power being supplied to the plate and the plate's cross-sectional area. Any ideas? Thanks in advance!
  32. R

    Odd question concerning the sedimentation of particles from a plate

    Hi there, I had clumps of particles on the underside of a plate. A ball bearing was dropped onto the plate which caused the clumps to detach and fall a short distance through still air onto a gel-coated microscope slide. Presumably, the distribution of clump sizes was altered during the fall...
  33. P

    Plate floating on oil - linear momentum equation

    Homework Statement 1: Determine the wall shear stress that acts at the lower side of the plate. 2: Determine the force Fx that is needed to give the plate a speed of u = 1m/s. 3: Determine the speed V, that is leaves an air jet that blows against the plate and which creates the same force...
  34. A

    Can we transfer the charge on a plate of a capacitor elsewhere?

    I know it is hard , but can we transfer the charge on a capacitor plate elsewhere? For example if i had a capacitor with capacitance of 56 μF and charged at 200 volts , if i wanted to transfer the charge on the cathode to a metal rod , how can I do it ?
  35. A

    Are There Design Standards for Spiral Plate Heat Exchangers Similar to TEMA?

    Hi guys ! Is there any Standards for thermal designing of spiral plate heat exchanger, like TEMA for shell and tube heat exchangers ?
  36. P

    Attraction force of atoms inside a metal sphere, near a charged plate

    Hi, I have read about electric charge and tried to understand one particular thing but still couldnt: If we positively charge a big metal plate with very high voltage and approach to it a small solid neutral metal sphere, the smaller sphere obviously will get attracted, i.e. a force will...
  37. I

    Calculating volume flow rate per unit width of a plate ( Fluid Mechanics )

    This is the question The flow of a fluid between two large flat parallel plates normal to the y direction is fully developed and steady. The plates are a distance 2h apart in the y direction and the velocity profile, assuming y=0 is at the midpoint between the plate is V(y) = V_0(1-(y/h)^2)...
  38. C

    Find M, Mx, and My for a thin plate if density=ky

    Homework Statement Set up integrals to find M, Mx, and My for the thin plate if d(x)=ky bounded by y=2-x and y = 4-x^2 or x = sqrt(4-y) Homework Equations M = \int dm = \intd(x)dA Mx = \intydm My = \intxdm The Attempt at a Solution I broke this down into three equations. x1 =...
  39. Seydlitz

    Potential Energy of an electron in a parallel plate capacitor

    Homework Statement What is the potential energy of an electron in a parallel plate capacitor if kept on the negative plate before being released? Homework Equations 1/2mv^2 = qV = PE Capacitor Energy = 1/2QV The Attempt at a Solution 1/2mv^2 = qV = PE However if I'm not mistaken there's...
  40. D

    Electrostatic Printer and two plate capacitors deflecting charged ink droplets

    Homework Statement One type of ink-jet printer, called an electrostatic ink-jet printer, forms letters by using deflecting electrodes to steer charged ink drops up and down vertically as the ink jet sweeps horizontally across the page. The ink jet forms 30-μm-diameter drops of ink, charged...
  41. M

    Linearly polarized light on a quarter wave plate

    Homework Statement A linearly polarized beam propagates in the z-direction with its E-field oscillating in the y-direction. It is incident on a quarter wave plate (QWP) located in the x-y plane at the origin. a. How should the fast and slow axes of the QWP be oriented if the beam emerging from...
  42. R

    Determine the focal length of a Fresnel Zone Plate

    Homework Statement Derive an expression for the Fresnel Zone Plate's focal length Homework Equations The fresnel zone plate has a transmittance function 1/2 (1+cos (ar^2)circ(r/2l)The Attempt at a Solution Using Eulers formula. this splits into e^(iar^2)+e^(-iar^2) Since the transmittance...
  43. Gh778

    Faraday cage in a parallel plate capacitor

    Hi, A parallel plate capacitor is charged from fixed voltage, after I cut voltage source. Now, what's happened if I place a Faraday cage inside capacitor (without touch capacitor) ? Capacity changed ? So energy of capacitor changed ?
  44. U

    Circular Plate with eccentric hole

    Hi everybody, I'm looking for a way to determine the maximum moment of a uniformly loaded circular plate (diameter = 10") with eccentric circular hole (diameter = 4"). The plate is clamped at outer edge and free at inner edge. The ultimate objectif is to determine the minimum thickness of...
  45. R

    Dielectric and Parallel Plate Capacitor, the point?

    Hi, so I'm having a little trouble understanding why... you would put a dielectric in between a parallel plate capacitor? I know it increases the capacitance but it does so by lowering the potential difference sooo... The charge is still the same, I believe the potential energy also decreases as...
  46. J

    Parallel Plate Super-Capacitor

    Just throwing this idea out there and wondering if there is any reason it would not work. In a parallel plate capacitor, the maximum voltage is controlled by the dielectric strength and the thickness of the dielectric. When using vacuum as a dielectric, there is a voltage dependant leakage...
  47. X

    Moment of inertia of a triangular plate

    Homework Statement see attachment Homework Equations integration The Attempt at a Solution answers: a. mH2/6 + mt2/12 b. mB2/2 + mt2/12 c. mH2/6 + mB2/2 d. -mBH/4 e. 0, 0 If the plate were thin t can be ignored. Ok so e is because of symmetry so I get that. a-d on the...
  48. J

    Cross Polarizers with a wave plate retardation

    Homework Statement "Consider a wave plate with a retardation τ=(η_0-n_e)*w*L/c. Show that when it is placed between crossed polarizers with its optical axis at an angle of θ with respect to the polarizer axis, the transmitted intensity is given by: I_out/I_in= (sin^2(2θ)(sin^2(τ/2)) In...
  49. D

    MHB Finding Temperature in a Rectangular Plate: $\nabla^2u=0$

    The steady state temperature $u(x,y)$ in a rectangular plate $0\leq x\leq L$, $0\leq y\leq M$, is sought, under the condition that the edge $x = 0$ is maintained at zero degrees, $x = L$ is kept at $u(L,y) = y$ degrees, and the edges $y = 0$ and $y = M$ are insulated. The appropriate...
  50. S

    Find the drag over a flat plate with laminar and turbulent boundary layers

    Homework Statement Consider a flat plate moving at V = 105 ft/s in an atmosphere with P = 2100 psf and T = 75F, with a viscosity of vis = 3.7373e-7 slug/ft-s. The plate has a 2 foot chord and a 3.5 foot span. a. Find the drag on the plate for: i. A boundary layer that is laminar over the...
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