Orbital Definition and 820 Threads

Hi all, I've got some conceptual questions that I need to clear before my exam I hope someone can help me out here. I understand that a geostationary satellite must orbit in the plane including the Earth's centre, in order to stay above a particular surface of the earth. However, can a...

If ocean levels go up enough, will they have an impact on the Earth's rotational speed and the Moon's orbital radius? If so what will the effect be? It seems that all these things are tide to one another.

This is really cool. [PLAIN]"[MEDIA=youtube[/URL] I notice the balls change speeds proportionate to their height on the wall as they follow their elliptical paths. Does their speed follow Kepler's 2nd Law?

(unrelated to my other post about an asteroid) 1] I would like to check a postulation with someone who has an orbital simulator, or a good head for orbital mechanics. Given an object such as a comet with orbital period of about 150 years, could it have a perihelion at a distance between...

I don't know how to answer this question without a given altitude, but since one isn't given then I probably don't need one. Any ideas? Determine the minimum velocity an Earth satellite must have in order to purse a stable orbit without falling to the ground.

Here's an interesting question inspired by a homework probem (not mine) - what is the orbital period (proper time) for someone in a circular orbit around a black hole as a function of the radius of their orbit (Schwarzschild r-coordinate). By setting the derivative of the effective potential to...

Ok so the total energy of a body following a given trajectory around a much larger body (eg. Earth and sun), is described by : E(total) = (1/2)mv^2 + U (where U = grav. potential energy) E(total) = (1/2)mv^2 - (GMm)/r (1/2)mv^2 can then be expanded to give : E(total)...

Hi all, The Final Theory" by Mark McCutcheon offers a lot of new (strange) thinking, but can anyone out there, in laymans terms, and assuming one is familar with "The Final Theory", tell me how the heck orbits are done, ie, Moon around the Earth? If the whole universe is expanding, how do...

This just in: They just re-acquired signal with the MRO after it went around the far side of Mars. They are waiting to ensure it is in the correct orbit right now.

I'm a bit unclear about the description of orbital motion in a plane by using the polar coordinates (r,\theta). This coordinate system changes its orientation in the inertial reference frame, that it is rotating as the orbiting object moves along its path. In the derivation of the equations of...

Hello, Let's consider a small 3 planet system. One of the planet's is fixed and is a lot heavier than the others. The acelleration is mP2 * aP2 = - FP3 - FP1 From with the velocity is derived with allows to calculate the positions of the planet's in a simulator program. After running the...

I am reasonably familiar with conventional elliptical orbits under gravity but how do they change as orbital velocities get very fast and start approaching the speed of light? let us initially neglect any energy losses due to gravitational radiation. I have been searching the web for some time...

p orbital, π bond, and lots of questions :) I’m a little bit confused, and I APOLOGIZE if I’m asking too simple and stupid questions. OK, we have two atoms, each with one p orbital (8), occupied with one electron and they form π bond. You all know how π bond looks 8=8, and I wondered why...

Is this true? (excerpted from http://www.astro.uni-bonn.de/~bertoldi/ub313/" about 2003 UB313) "...Its very elongated orbit takes it up to 97 times farther from the Sun than is the Earth - almost twice as far as the most distant point of Pluto's orbit – so that it takes twice as long as...

hey where r my recent posts on orbital properties and electron energies?

I had to buy a new orbital sander today. The instructions warn not to use it around dust.

Hi. I'm having some trouble trying to grasp a concept. I know that mathmatically Force perpendicular to motion is zero work. I can't seem to grasp this conceptually. First It seems That is an object is moving right and a force acts straight up on it, it will cause the object to move in a...

Consider the Earth's orbit around the sun to be in a plane A and the moon's orbit around the Earth to be in a plane B. How do these planes intersect? Are they parallel or perpendicular? At what angle do they intersect themselves? Does the angle stay the same, or does it vary.

Hi, I need to calculate and visualize molecular orbitals (HOMOs) of few simple organic molecules (may be using DFT method). The molecules are positivly charged. Can anybody please help me with this calculations?

The position of a particle of mass m moving in a circular orbit with radius r = ro is given by: r(t) = ro <er> Show using Newton's second law of motion, that if the force responsible for this motion is given by: F = -k/r^2 <er> a) the angular velocity is constant in time, and b) the...

Hi. I have been trying to find the MO diagram for BrF5 since it is not in my textbook. I have been searching the web, and Google but I haven't been able to find anything, if someone knows of a MO diagram on the web I would be thankful If you would tell me where to find it.

A rocket is 1.00x10^10m from a moving star moving at a speed of 1.00x10^5 m/s with a total energy of -1.67x10^17 J when it experiences a gravitational force magnitude of 6.67x10^7 N. It turns on its thrusters and its speed as well its distance to the star doubles by the time the thrusters are...

why my answer is wrong? --- remove electron from orbital question: In forming Ni+ and Ni2+, the nickel atom loses electrons from which orbital(s)? I looked at the periodic tale, and Ni is in the middle, where the 3d orbital located. so when you need to remove one or two electrons, you...

Unless you have orbital geometry down cold this might take a little thinking. SET UP A large independent planet with a thick atmosphere included is 100 Mega-meters in diameter. Beyond that diameter we can consider that we have a real vacuum outside that diameter. “Independent” only means...

I used to understand this -- a few years ago -- but it has completely slipped my mind. What is going on with al this 1s2 and Like Cs[Xe]6s1? Thanks a lot, Mk

Is there anyone who knows the answers of these two long-standing questions? 1. How can the orbital electron rotate permanently without energy supply? 2. How can the orbital electron keeps its position without merging into its nucleus when an external pressure applied on it if its kinetic...

Hello, I need help on deriving a equations for the moon's acceleration around the earth. I've already found the total acceleration (a=Gm/r^2) but what i need to do is split this acceleration up into its x and y components, and derive equations in terms of a, r, x, and/or y for any given position...

Suppose there is a planetary system in which a planet with an average distance of 6 AU from the star has an orbital period of 3 years. What is the mass of the star? The answer should be in SOLAR MASSES. I tried to use the formula: P^2 = (4pi^2*a^3)/G(m+M) but it didnt work:( any...

To make the moon deviate from it's straight line path requires a force and I assume this force requires energy. Considering the mass of the moon and the billions of years it has been orbiting the Earth this seems like a tremendous amount of energy expended. With regard to the conservation of...

Am very interested in why the inner shells have 2 electrons, the next couple have a couple more, and the rest all the same. If you would like to argue that its related to the diameter of the orbit then of course you have MAJOR issues to deal with. This is important and I'm hoping...

Here's the problem...unfortunately I don't remember much about orbital motion. I'm a bit stuck on where to begin. If somebody could give me a little advice on how to tackle this problem I would appreciate it. Recall that the magnetic force on a charge q moving with velocity v in a magnetic...

The wikipedia entry on strange matter didn't tell me all I wanted to know, so I'll have to ask here: Is strange matter a fluid like 'neutronium' matter is? i.e. given advanced enough technology, could a cube or other non-spherical shape of strange matter be created? Or would it form a sphere...

Hi everyone, My latest acquisition is an 8"-dobsonian mounted telescope, and I thought I'd try a bit of asteroid observing. What I would like to do is record the asteroid's position over the course of several observations and as a mathematical exercise, calculate its orbit. I know how to use to...

orbit n orbital! hi, what is the difference between Orbit and Orbital? when electron is moving so fast, how can we assume of arranging them in an arbital? I am unable to get the actual concept!

this is the expression ofr the orbital period T= 2*pi*R^(3/2)/sqrt(G*M) that i found now the next question asks me to find an expression for T^2=?

Can anyone give me a clear and good explanation of Newtons Law of Gravitation, Keplers Law & Orbital Motion.

A communications satellite is in a circular orbit around Earth at radius R and velocity v. A rocket accidently fires quite suddenly, giving the satellite an outward radial velocity v in addition to its original velocity. a) Calculate the ratio of the new energy to the old and new angular...

Is there a resource showing relative distances between the planets charted for different times of the year? Specifically, I'm looking for tables or software where I can type in a date, and a starting location, say Mars, and see the distance to a selected body in the solar system, say Jupiter...

1. A proton of mass rotates with an angular speed of 2*10^6 rad/s in a circle of radius 0.8m in a cyclotron. What is the orbital angular momentum of the proton? 2.An object's angular momentum changes by 10Kgm/s^2. What magnitude average torque acted on this object? 3. A pulsar which emits...

I need to find the orbital radius of a satilite, while only knowing its orbital period. i tried.. a = 4π²r/T² Fnet = Fg a = Gm/r² Gm/r² = 4π²r/T² r = cuberoot(T²Gm/4π²) didnt work out..

Came across another question during my exam review. Seems to me like there is insufficient data again. When the space shuttle delivers a crew to the international space station, it usually boosts the orbit of the station from about 320 km to 350 km. How much energy does the shuttle add to the...

Im having a little trouble finding the orbital period of Earth using: t_{years}=2\pi\sqrt{\frac{a^3}{GM}} "M" being the mass of the central body, obviously the sun, at 2 x 10^30 kg "a" being the semi-major distance in Au = 1 So, \approx...

What path do electrons actually take in an orbital... If electrons are found somewhere within an orbital, what kind of path do they travel within it? ie- is it similar to the orbits of the planets or more random like? Thanks. :smile:

Yo, I don't understand the concept of the M.O. Theory and I don't know how to draw these diagrams. Are these closely related to Hybridization drawings and resonance structures? Please help me, I'm confused with all the bonding/anti bonding symbols etc. Thank you,

im not getting this problem AT ALL: You are an astronaut in the space shuttle pursuing a satellite in need of repair. You find yourself in a circular orbit of the same radius as the satellite, but 30.7 km behind it. How long will it take to reach the satellite if you reduce your orbital...

How do you determine the symmetry of the orbitals and whether they overlap in a molecular orbital diagram?

The orbital period of Comet Halley is calculated to be 75.5 years. Many other comets have orbits that extend much farther from the sun, and hence have much longer periods. At aphelion, a typical long-period comet is about 8*10^12 km from the sun; at perihelion, it passes inside the Earth's...

Alright, I have a question regarding quantum physics, but I don't want to post in that forum, because it scares me. I saw a website, it had an atom fill up electrons in orbital, as it got high, a rather unusual thing happened, an electron from an S orbital jumped to fill a P sub-orbital. I was...

Hi guys and gals I have been given this question and have spent so far around 4 hours pondering calculating researching and reading and have got no where except into a large state of confusion! Its probably really really simple but i just can't seem to get logical answers and now i have...

The nucleus of Tungsten conssits of 74protons and 110 neutrons. SUppose all of the electrons were stripped off, but one, leaving a W+73 atom. Using the Bohr idea of the atom (not anything else!) How much energy nrequired to remove this last electron from orbit?? The energy of the elctron...