Hi,
I know that the angular momentum eigenfunctions in spherical coordinates are spherical harmonics, Ylm ( \theta, \phi ) \propto (-1)mPlm(cos\theta)eim\phi.
Applying the parity operator to Ylm ( \theta,\phi ) means that \theta -> \pi - \theta and \phi -> \phi +\pi.
This implies that...
Hi
I have questions related to the electronic configurations of elements of d and f-block.
First I want to ask a question about the E.C. of Lanthanium. This element has E.C. [Xe]5d16s2, but according to Bohr-Bury rule 4f-orbitals should be filled prior to 5d-orbital and then Lanthanium’s E.C...
The problem is stated here:
http://i56.tinypic.com/iderfc.jpg
I have included my work until the point I got stuck on.
I have worked out problem 9b) but can't figure out how to solve 9a) and 9c)
Thank you for any help.
Homework Statement
I'm attempting to find the orbital radius for a binary system based on the parallax of the system and angular seperation:
1. A visual binary system that is 5 pc away is seen edge-on (i.e. we are in the plane of the orbit). The maximum angular separation of the two stars is...
Homework Statement
An impulse Engine, A, is located in Earth orbit with an orbital period of 9.6 hours. Another Impulse Engine, B, is located in Earth Orbit with an orbital period of 24.0 hours.
a) What is the orbital radius and orbital velocity of IEA?
b) What is the orbital radius and...
Not sure this is the right section for this question, but it seems the closest so...
I'm part of a small team that's working on designing a scifi space-based realtime strategy (RTS) game. One of the things that we'd like to incorporate into the game is relatively realistic Newtonian physics...
Homework Statement
What is the mass of a planet (in kg and in percent of the mass of the sun), if:
its period is 3.09 days,
the radius of the circular orbit is 6.43E9 m,
and the orbital velocity is 151 km/s.Homework Equations
I'm unsure what formulas to use, though these seem relevant.
F=...
Homework Statement
Two stars are in a circular visual binary system. The orbital
period of the binary is 30 years. The distance to the binary is 20
parsecs. The angular radius of the orbit of each star is 1". What
are the masses of the two stars?
Homework Equations
I am assuming that...
Homework Statement
A satellite is in a circular orbit around the sun, radius r_{e}, the radius of Earth's orbit. After a short rocket thrust parallel to its velocity, it is in a new orbit with aphelion at Jupiter's orbital radius, r_{j}. What is the ratio of the speed's just before and after...
Homework Statement
Use the information in Section A.3 and the data in Table A.19 to calculate the heliocentric radial distance (in AU) of Comet Halley at 12h UT on July 16, 1994.
- Done, Section A.3 just talked about finding dates using Epochs and such.
Table 19 had comet details which will...
Homework Statement
I know how to do this problem, I'm just having trouble actually doing it.
A particle moves in a force field described by,
F(r)=-k(ar+1)\frac{e^{-ar}}{r^2}
1. Obtain the condition for a circular orbit of radius r0
2. Apply a perturbation to the circular orbit and find the...
Homework Statement
A satellite is in orbit around a planet. The orbital radius is 34 km and the gravitational acceleration at that height is 2.3 m/s^2 What is the sattelites orbital speed in m/s
Homework Statement
Basically says that a geostationary satellite requires a distance of 35 900 km above Earth's surface. I need to find its orbital velocity.
Homework Equations
The Attempt at a Solution
I find the circumference of the orbit = 225566.3525km then change units to...
Homework Statement
The polar orbiting satellite NOAA-N was launched in May 2005. The satellite is now moving in a circular orbit above the Earth's surface at an altidude of 870 km. THe mass of the Earth is 5.97 x1024kg and its mean radius is 6.38 x106m.
Show that the orbital speed of the...
Homework Statement
The orbit of the Space Shuttle is usually circular with an average altitude above the Earth of around 210 miles. The mass of the Space Shuttle on orbit is about 100,000 kg.
1. What is the distance of the Space Shuttle (shuttle) from the center of the Earth?
2...
Problem: Orbital Period - eclipse time - Illumination time ??
Homework Statement
An educational institute has decided to launch a small satellite having mass and volume of CubeSat specifications i.e. mass of 1.33kg and volume of 10 cm cube. Due to some launch constraints, there are three...
Hey all, I have a layman's question that's been bothering me for a while. As I understand it, the orbit of a given planetary body around a high-gravity object (like a sun) is determined by the balance between its tangential velocity and the force being applied on it by the high-gravity object...
Homework Statement
PHYSICS Gravity exercise!?
What is the acceleration due to Earth's gravity at a distance from the center of the Earth equal to the What is the acceleration due to Earth's gravity at a distance from the center of the Earth equal to the orbital radius of the Moon?
a =...
Homework Statement
The 2s electron has a greater probability to be close to the nucleus than the 2p electron, and also a greater probability to be farther away. Make an analogy to classical orbits to explain how this is possible.
Homework Equations
The Attempt at a Solution
I can...
I keep seeing density of states and sometimes density of orbitals. What is the difference between a state and an orbital?
Also, due to Pauli exclusion principle, does each orbital contain 1 or 2 electrons? I'm guessing each orbital have 1 electron, and there can be 2 orbitals with same...
How do you calculate the orbital period of an object, eg. a satellite, if the only known values are the radius of the orbit and the mass of the central object?
I am taking a class which discusses orbital angular momentum in a pseudo-quantum way, and it was explained that the orbital angular momentum is zero if the time average of the individual "L vectors" sum to zero. I am considering p-orbitals. The argument is that, if there are 3 electrons in the...
Hello PFers, a chemistry question that I need help with awaits!
Homework Statement
10.42 Describe the types of bonds and orbitals in the following: (a) NO3-; (b) CS2; (c) CH2O; (d) FNO; (e) C2F4.
Homework Equations
The Attempt at a Solution
I tried to visualize the kind of...
Homework Statement
The space shuttle is in a 290-mile-high orbit. What is the shuttles orbital speed?
Homework Equations
v=√GM/R+h
The Attempt at a Solution
Period:
Me= 5.98x10^24kg
Re= 6.38x10^6m
H= 290miles * 1609m = 466610m
v= √(6.67x10^-11 N)(5.98x10^24 kg)/ (6.38x10^6...
Hi,
I'm a 4th year undergrad AE major and have been thinking about my career choices and graduate school choices a lot. Out of all the topics covered in my classes so far, I found orbital mechanics/ spacecraft mission design the most interesting.
My question is, is it difficult to find...
Homework Statement
We will compute the orbit of Eris, the infamous \tenth planet" that caused Pluto
to be demoted to \dwarf planet" status. Eris (also called 2003 UB313 in the
textbook) has a semimajor axis a = 68:048 AU and eccentricity e = 0:4336 based
on the best current observations...
I am trying to understand the existence of orbits apart from the elliptical one. I have used the following line of thought.
Consider an object moving from infinity towards a planet. The object has kinetic energy alone at infinity. But it develops a potential energy as it comes closer to the...
Hello,
I'm a bit confused learning about how an electron can be found anywhere within the probability density. What exactly are the bounds of the probability density? Could the electron (with an insanely low probability) be found light years away from the nucleus?
This question has been bugging me... I've rephrased the question a bit so it shouldn't require much astrophysics knowledge to understand, just a bit of regular physics.
Consider a binary star system. By doing some geometry based on visual observations of the positions of the two stars over...
I've been working on this for five hours and I am on the verge of despair!
Can anybody help with this question? All I need is an equation!
There are two extrasolar planets (X and Y) that are orbiting two stars with the same mass as our Sun (1.9891 × 10^30 kg), i.e. the planets are in two...
Homework Statement
Basically I don't understand how you do this - the course I'm doing keeps mentioning the orbital radius of extrasolar planets but doesn't tell you HOW to find it?
Can anyone please help - in plain English, please, I'm not a natural scientist!
Homework Equations...
Homework Statement
Show that the sp2 hybrid wavefunctions given by the below equations produce a three-lobed charge distribution 120deg apart
Homework Equations
sorry if the image is hard to read, I was having issues with the formatting otherwise
The Attempt at a Solution
So...
Hi
I think it's all descriped in the title:
Why don't electrons in the same orbital repel..
I don't want the expected answer: because the direction of the magnetic field arising from the electron spin motion of each is opposite to the other... I don't get it.. how does a magnetic field...
Edit: perhaps this might belong in one of the Physics help forums? Oops. Mods, please move if so!
Homework Statement
Show that a transit of Venus across the Sun’s disk lasts at most about 8 hours. The synodic period of Venus is 584 days and its orbital radius is 0.723 A.U. The Sun’s angular...
Homework Statement
A satellite of mass 600kg is in a circular orbit about the Earth at a height above the Earth equal to the Earth's mean radius. Find:
a) the satellite's orbital speed
b) the period of its revolution
c) graviational force acting on it
Homework Equations
a) v^2 =...
I am trying to to teach myself the basics of quantum mechanics and need a bit of help. I am a non-mathematician so go easy on the maths in any reply.
I think I have understood the difference between the wave function, probability density and probability distribution in terms of describing...
I am fairly new to astronomy, having just finished a course this past semester in high school, and I have a question about orbital velocity.
Now, I know that the event horizon is the boundary at which the escape velocity is equal to the speed of light, but is there any significance to the...
Hi,
This question might be a little too specific, but does anyone know how (or where I might find literature) to generate basis set files used by the program TURBOMOLE. I am attempting to fit simple gaussian orbitals to dummy atoms but no luck so far.
Thanks
Homework Statement
There is a binary system accreting via Rcohe lobe overflow, where mass is transferred fromthe donor to the accretor and then lost in an isotropic wind.
State an expression for the orbital angular momentum of the accretor, J1 and then use keplers third law to find an...
I don't know if this is a thermodynamics issue or a quantum mechanics one. It seems like there should be some relationship between the average heat and pressure of a system and the behavior of electrons orbiting nuclei. Does anyone know if there are any observations and experiments that have...
I have been told that there is no interaction between the gravitational fields of the sun and any planet, but the issue continues to stimulate my curiosity.
If the Earth orbits the sun at 30km/s, how could anything achieve an orbital speed around Earth at greater than 30km/s without...
how is Hamiltonian energy of orbital differ from orbital in certain atom with another atom although the two orbital have the same no. of electrons...
ex...Hamiltonian energy differ in lithium and hydrogen although both have one electron in last orbital
please help me quickly
I was working on some side problems and came across one that confused me. Why is the magnitude of acceleration greatest at periapsis? I know that the a there is only centripetal a at that point. But if we look at another point, say theta = 90, there is both tangental and centripetal...
I'm trying to use the tensor formulation of GR to calculate the velocity of a particle in a circular orbit around a black hole.
Here is the work I have done so far.
What concerns me is that I end up getting zero velocity when applying the metric to the differential equations I get from the...
¿Are conserved the spin and orbital parts of the angular momentum?
For example , we have a particle decay into two photons, and you want to see if the angular momentum is conserved:
J(total angular momentum)=S(spin)+L(orbital)
The question is:
-¿only total J is conserved? (and s or l...
Might one place a telescope in Mars orbit, in order to obtain 6" to 1 ft resolution, looking for closeup geological views; such as mars' stromatolytic fossils, or mars' ice (rock) on the surface, in form of a smooth surface that seems a bit odd? Might billions year old Mars' ice be opaque to...
Homework Statement
An electron has a magnetic quantum number m=2.What is the magnitude of the orbital magnetic moment.
Homework Equations
mu=eL/2m
The Attempt at a Solution
Now i figured that the above equation gives the magnitude of the orbital moment and the equation for the z...