Orbital Definition and 820 Threads

  1. H

    Determining the Mass of Jupiter Using Io's Orbital Parameters

    Homework Statement Io, a satellite of Jupiter has an orbital period of 1.77 days and an orbital radius of 4.22 x 10^5 km. From this Data determine the mass of Jupiter Homework Equations 4pie^2/GM Kepler's Third Law The Attempt at a Solution I keep getting turned around. I know the...
  2. K

    Mass of Star HD 179949: 8.77x10^31 kg

    In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term "hot Jupiter"). The orbit was just {1 \over 9} the distance of Mercury from our sun, and it takes the planet only 3.09 days to make one orbit (assumed to be...
  3. C

    Does energy of an electron tells anything about its orbital it's in?

    Does the energy of an electron happen to be related by any chance to En= -13.6/n2?
  4. R

    What Is the Correct Method to Calculate the Orbital Period of GPS Satellites?

    GPS (Global Positioning System) satellites orbit at an altitude of 2.0×10^7 m. Find the orbital period.(hours)I use the equation T=(2pi/sqrt(GM))r^(3/2). Shouldnt that be the correct way of doing it? I know I am supposed to add the altitude to the radius of the earth, G is known, M of Earth is...
  5. M

    Trying to find orbital radius of a satellite

    Homework Statement A geostationary satellite in orbit around the Earth has a period identical to that of the Earth's daily rotation; the radius of such an orbit is 4.23 \times 10^4 kilometers. A system of satellites is proposed such that 15 satellites are in orbit at the same radius and each...
  6. M

    Orbital Radius of 15 Geostationary Satellites for 14 Daily Passes

    A geostationary satellite in orbit around the Earth has a period identical to that of the Earth's daily rotation; the radius of such an orbit is 4.23 \times 10^4 kilometers. A system of satellites is proposed such that 15 satellites are in orbit at the same radius and each passes over a point...
  7. I

    Probability of finding a state with azimuthal orbital quantum number

    STATEMENT: A system is known to be in the normalized state described by the wave function \psi(\theta,\phi)=\frac{1}{\sqrt{30}}(5Y_4^3+Y_6^3-2Y_6^0) What is the probaility of finding the system in a state with azmithual orbital quantum number m=3?WHAT I HAVE: We know that...
  8. J

    What is the Orbital Speed of a Satellite at 7000 km Altitude?

    Homework Statement A satellite is in circular orbit above the Earth at an altitude of 7000 km. What is the orbital speed of the satellite?Homework Equations Well, knowing that the mass of Earth of 5.98 X 10^24 kg And the radius of Earth is 6.38 x 10^6 m What equation do I start with here...
  9. U

    Calculating Sputnik I's Orbital Period

    1.Sputnik I, the first artificial satellite to circle the planet (October 1957) had a mean orbital radius of 6957 km. Compute its period in seconds 2. I am using the equation T^2 = R^3/C 3. I converted 6957 km to AU's which equals 4.638 E-5. When I plug in the numbers, and convert...
  10. H

    How to solve planet orbital question

    Ok I remeber a question on my physics test. where there's a planet orbiting a star in some other solar system. heres what was given to me. the radius,and the time it took for it to finish 1 revolution. I was asked to find the mass of the sun, that the planet was orbiting around so here's what...
  11. H

    What is the Orbital Period of Mars in Earth Years?

    Mars travels in a nearly circular orbit of radius 2.28 x 10^11 m around the Sun. The mass o Mars is 6.27 x 10^23 kg. The gravitational force of attraction between Mars and the sun has a magnitude of 1.63 x 10^21 N. a) what is the speed of Mars? i got 2.4 x 10^4 m/s b)Determine the period...
  12. 1

    Do Orbital Inclinations Affect Hohmann Transfer Efficiency?

    My first post on this site, been reading for a while but joined up today so please bear with me :) I've got an assignment for my University orbital mechanics course. I couldn't find the place in the 'Homework' section, so i thought here would be ok. I've got a few pretty simple...
  13. P

    Calculate the orbital period of a spacecraft around the moon

    1. During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of 100km. How long did it take to go around the Moon once? 2. T= 2(pi)(r^3/2) / root (GM) mass of moon = 7.35 X 10^22 radius of moon= 1.74 X 10^6 3. I think that is the...
  14. G

    HELP Can you find an electron in the exact middle of an S orbital?

    I have been fighting about this with my inorganic chemistry professor for the past week. As far as I can tell when you take the radial wave function for the 1 s orbital, square it, then times it by r^2, you get a zero probability to find the electron in the middle of the 1s orbital, and a local...
  15. Z

    How To measure Moon Orbital Velocity ?

    Im doing a school project where we need to come up with an accurate way to measure the moons orbital velocity with an experiment... My plan was to find the radius of the moons orbit, then its period, and based on a distance over time find its velocity. However i realize I am making a serious...
  16. S

    Orbital Frequency of Electron-Positron Pair: Calculating 1.0nm Separation

    Can someone tell me how or an idea on how to start this problem? A positron is an elementary particle identical to an electron except that its charge is +e. An electron and a positron can rotate about their center of mass as if they were a dumbbell connected by a massless rod. What is the...
  17. T

    Orbital question(elliptical vs circular orbit)

    are there two points or one in an elliptical orbit where the speed is equal to the speed of a circular orbit at the same radius? if so what is the expression for this point? Thank you
  18. S

    Does Mass Affect the Orbital Velocity of Satellites?

    Homework Statement A science group put in a satellite of mass m kg into a circular Earth orbit of radius r. The orbital velocity it needs to remain in this orbit is v. They now put another satellite into a similar orbit at the same altitude. Its mass is 3 times m. What orbital velocity would...
  19. R

    Wave orbital velocity components

    I am having trouble with the equation below for the U component of the orbital velocity in the x direction for a particle in a wave. I have the encountered data and therefore the static data also. I am wondering if I should use the encountered wave number, k, or the static one? If I use the...
  20. J

    Finding distance of a planet whose orbital period is 2x Earth

    A small planet has an orbital period that is twice that of Earth. What is the planet's orbital distance? From Kepler's 3rd law of planetary motion, I can assume that: rp3 / rE3 = Tp2 / TE2 where rp is the orbital radius of the planet and Tp is the orbital period of the planet...
  21. S

    Orbital and spin angular momentum

    what are the formulas for orbital and spin angular momentum? Or both have the same formula? The formula J=mvr is for orbital or spin angular momentum?
  22. B

    Calculating the Force Opposing Gravity in Orbital Simulations

    I am writing a program to do some orbital simulations. For ease of conversation, let's start with the sun and the earth. If the Earth were standing still, the sun would pull it in quite rapidly. As the Earth is moving at about 1.47 kilometers per second, that movement creates a force opposing...
  23. J

    Q on satellite orbits + orbital drift

    Im aware that due to the oblate nature of the Earth, the satellite's line of apside and line of nodes rotate according to the following formulas (where i = angle of inclination of orbit to Earth and K is mean motion per day) Variance in right ascension of ascending node (\Omega) due to...
  24. Q

    Understanding Atom Orbital Calculations: Wave Equations, Calculus, and Matrices

    I know they must use some sort of wave equation to calculate the exact orbitals of an atom, but I'm interested how they can be so absolutely sure that their calculated configurations are not wrong, what do they use calculus...matrices...etc?
  25. L

    Why Does the Momentum Operator Yield Different Results in Rotations?

    Hello, sorry I am new to this forum, I hope I found the right category. I have a question about the momentum operator as in Sakurai's "modern quantum mechanics" on p. 196 If I let 1-\frac{i}{\hbar} d\phi L_{z} = 1-\frac{i}{\hbar} d\phi (xp_{y}-yp_{x}) act on an eigenket | x,y,z...
  26. maverick_starstrider

    QFT and Electrons: Is Instantaneous Orbital Change Possible?

    My mathematical knowledge of QFT is nonexistant (I'm only just starting grad school) so I was wondering if anyone could clear up a questions I have: 1) Can the time it takes for an electron (which has just absorbed a photon of the correct frequency) to move to a higher orbital be said to be...
  27. T

    Easy - determining n from orbital radius

    Homework Statement For the hydrogen atom, determine the principle quantum number corresponding to an orbital of radius Rn=0.01mm Homework Equations I'm using the following formula: Rn=(n^2)(Ao)/Z Where Rn is the orbital radius (0.01mm), n is the principle quantum number (wanted) Ao...
  28. W

    Hubble Space Telescope Orbital Period

    Use Kepler’s laws to determine the period of the Hubble Space Telescope which orbits the Earth at an altitude of 610 km. I'm using the equation i know to find the period of an object revolving around another object T^2=Kr^3 T^2=(4pi^2/GM)*r^3 G=6.67 x 10^-11 M=5.98× 10^24 (Mass of...
  29. B

    Two engineers, a physicist, and an orbital mechanist can't figure this out

    Homework Statement Friend's fiancee gave this problem on a final she was administering and isn't sure how the answer key is right: Boyle's law describes the inverse variation between the volume of a gas and the pressure, y, exerted on it. A balloon with a volume of 2.25 liters is sealed in...
  30. M

    ClO3+: Hybrid Orbital of Chlorine Atom

    Decribe the hybrid orbital on the chlorine atom for ClO3+ ion. The book says sp2 hybrid with double bonds on each O. But it seems like: 1) Cl should donate 2 electrons to 2 O's 2) lose 1 electron for + charge on ion. 3) form two singles and one double bond with the O's From this I...
  31. N

    Orbital Frequencies: Single Atomic & Covalent Electron Determination

    How are the orbital frequencies of single atomic electrons, and covalent electrons determined?
  32. B

    What is Orbiter Space Flight Simulator?

    I am toying with the idea of creating a general orbital simulator. Possibly lacking the proper terminology, here is a basic description of my goal, make that wild dream. Step 1. Working in 2 dimensions, user enters the mass of 1 to N object, their initial position, their initial velocity...
  33. K

    Orbital Light Speed: Is it Possible?

    Hi, Is it possible for a man made object to remain in a circular solar orbit at speeds approaching light speed without a coriolis force destroying the object or disrupting the orbit. If so, what distance from the sun would be required and what would the orbital period be?KodeK reel8.co.uk
  34. K

    Chemistry: Stability of Atomic Orbitals

    Hey just need help regarding a few questions. 1. Which is more stable, C 2s or C 2p? Why? Choose the best answers from below: (a)higher shielding (b) lower shielding (c) lower n value (d) lower l value 2. Which is more stable, Ar 5p or Ar+ 5p? Why? Choose the best answers from below: (a)higher...
  35. Holocene

    Orbital speed of stars within galaxies?

    I have read some information, from various sources, pertaining to the orbital speed of stars about the center of galaxies, and some of it appears to be conflicting. Some sources claim that the stars closer to the galactic center orbit faster, while those father out, orbit slower. This of...
  36. S

    Is the Root 2 Relationship Valid for Orbital Mechanics on the Moon?

    I had thought that for an object in a simple circular orbit, the escape velocity would be root 2 times it's orbital speed. And that this should approximately apply for the Moon too. However Wikipedia here http://en.wikipedia.org/wiki/Moon gives the moon's escape velocity as 2.38 km/sec...
  37. D

    How can I design a strong and efficient orbital shaking platform for my needs?

    i need help designing a orbital shaking platform with a pitch of 20 mm, shaking at speed of upto 300RPM (extended range 500 RPM) with platform size of 525mm x 525 mm, capable of carrying loads of upto 10 Kg without considering the weight of platform itself. How to undertake mechanical...
  38. R

    Calculating the Orbital Speed of Mars: An Easy Guide

    orbital speed of mars! help!? Mars is 230 million km from the sun. It completes one orbit in a period of approximately 687 days. Calculate the orbital speed of Mars in mph. OK so gave me the formula which 2*pi*r/ Period r= distance from the planet to the sun. and cirmumference = 2*pi* r...
  39. N

    What Hybridized Orbitals Explain Water's Bond Angle?

    this is the question from our project/ assignment: The experimentally observed H-O-H bond angle of water is 104.5 degrees in water. Determine a hybridized orbital scheme that could account for the observed bong angle of 104.5 degrees. Redraw a fully labeled orbital overlap diagram using the...
  40. B

    Calculating Earth's Orbital Speed Using Star Spectra

    How can the earth’s orbital speed be determined from observations of the spectrum of a star? Thanks
  41. R

    Orbital Speed of Earth: Calculating the Speed of Earth's Orbit Around the Sun

    Orbital speed of Earth! help! The Earth is 150 million km from the sun. IT completes one orbit in a period of approximately 365.25 days. Calculate the orbital speed of Earth in mph? OK guys so they give me the formula which is 2*pI*r /Period r= distance from the planet to the sun. and...
  42. N

    How Do You Calculate the Orbital Frequency of an Electron and Positron System?

    [b]1. A positron is an elementary particle identical to an electron except that its charge is + e. An electron and a positron can rotate about their center of mass as if they were a dumbbell connected by a massless rod. What is the orbital frequency for an electron and a positron 1.70 nm...
  43. L

    Where is the Zero Gravitational Field Strength Point Between Earth and Moon?

    Homework Statement 100 ton rocks are "thrown" from the moon to the earth. (a) Calculate the location of the point, between the Earth and the Moon, where the gravitational field strength is zero. Give your answer in km, from the center of the Earth. (b) What is the difference in PE between the...
  44. G

    Is This Calculation of Sz for Molecular Orbitals Correct?

    [SOLVED] molecular orbital wavefunctions http://img255.imageshack.us/img255/7012/37626561fb6.jpg starting with Sz(total) = Sz1 + Sz2 Sz(alpha) = +(1/2)hbar(alpha) Sz(beta) = -(1/2)hbar(beta) I first found the determinant and then simplified psi =...
  45. K

    Calculating Kinetic Energy at Perihelion: Orbital Energetics Help

    Given: Planet is orbiting a star G = 6.67259 x 10^-11 Nm^2/kg^2 Mstar = 1.99 x 10^30 kg mplanet = 5.98 x 10^24 kg distance from perihelion to star = 1.69 x 10^11 m distance from aphelion to star = 1.745 x 10^11 m potential energy at perihelion = -4.698 x 10^33 J Need: Kinetic...
  46. A

    Is it possible to create Orbital construction yards for Spaceships?

    can mankind do like the ISS and launch many sections of a orbital space-dock into the orbit and use these as a platform to build large ships required to transport people to other solar systems?
  47. C

    Solving Orbital Plane Alignment of Two Planets

    Im trying to solve (approximately) the following problem: Suppose that i have 2 planets with mass m1 and m2 orbiting around the sun and i take into account the following interactions: a) Interaction between planet 1 and the sun b) Interaction between planet 2 and the sun c) Interaction...
  48. I

    Electron orbital angular momentum

    Why can't an electron in a coulomb field have an orbital angular momentum quantum number higher than it's principal quantum number (ie there is no 1p state etc.) I think is probably something I learned at one point, but I've forgotten and can't seem to find anything about it anywhere. I know...
  49. T

    Need Check On Orbital Satellite Problem

    Homework Statement A 347 kg satellite orbits mercury and makes 6.6 orbits in 1 day. Mercury ---- Radius 2.44*10^6 meters ----- Mass 3.27*10^23 kg 1.Find the Period of Revolution 2.Calculate the Tangential Velocity 3.Calculate the height above the surface of the planet that the...
  50. P

    What is the Orbital Period of Jupiter in Earth Years?

    Jupiter is 5.2 times farther than Earth from the sun. Find Jupiter's orbital period in Earth years. Equation to use is: T^2 = Kr^3 Radius of Earth is 6378100 m and radius of Jupiter is 71492000 m. I rearrange the equation to K = T^2/r^3 and set k of Earth equal to k of Jupiter. I enter...
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