Orbit Definition and 1000 Threads

At what altitude will a satellite complete a circular orbit of the Earth in 1.8 hours? i used r=(GMT^2/4pi^2)^1/3 -Radius of the earth. but I am keep getting wrong answer please help

Homework Statement satellite is in a circular orbit around the earth. The period of the satellite is 25.4 hr. Calculate the radius of the orbit of the satellite. Data: Mass of the Earth = 5.98 x 1024 kg

In the Northern Hemisphere of North America is the sun closest in the elliptical motion in the winter but the tilt is away from its intensity at the Tropic Of Capricorn? In the summer is the sun farthest in the elliptical motion but the tilt is toward the Tropic of Cancer and North America?

Homework Statement A satellite of mass m, initially at rest on the earth, is launched into a circular orbit at a height equal to radius of the earth. What is the the minimum energy required for this purpose? Homework Equations GMm/r^2 = mv^2/r PE at surface = -GMm/R PE at orbit =...

To help me you will need tho know Excel VBA very well. Earth has an elliptical orbit around the sun. JPL's website has the data to calculate this orbit: http://ssd.jpl.nasa.gov/txt/p_elem_t1.txt In the spreadsheet the parameters are calculated from widely used equations and some of my...

11. Which one of the following sets of quantum numbers (n, l, ml, ms) could not possibly describe one electron of an arsenic atom (Z = 33) in its ground state? (A) 2, 1, -1, 1/2 (B) 4, 2, 2, -1/2 (C) 3, 0, 0, -1/2 (D) 3, 2, -2, 1/2 (E) 4, 1, 0, 1/2 Solution: Electron configuration...

A long time ago, I wrote a program that takes bunches of particles and applies Newtonian gravity to each so they interact. Lately I've rewritten this program, in an effort to simulate planetary motion. However I've ran into a bit of a snag, I can get a Sun-Earth system to behave properly, and I...

SpaceX's Falcon1 Rocket Achieves Orbit! Here's an article on Wired.com with an embedded Youtube video! http://blog.wired.com/wiredscience/2008/09/space-x-did-it.html Woohoo! Let the private space age begin! :cool:

Homework Statement 1. One of Jupiter's moons has a mass of 4.80E+23 kg and a radius of 3000.0 km. How high above the surface of the moon should a satellite of mass 183.0 kg be so that it undergoes geosynchronous orbit about the moon? The rotational period of the moon is 0.2639 days. 2...

a)Calculate the altitude of a geosynchronous orbit (an orbit that has an orbital period of one sidereal day)(altitude is measured from the surface of the earth/ The "r" in gravitational equations is always measured from the center of mass of an object. one may assume a circular orbit.) b) how...

This question has been stumping me on my Astronomy homework for the past couple of days. I've tried to input the question into any of the other formulae that we've studied, but I keep drawing a blank on it. Homework Statement Given the size of Triton's orbit(a = 355,000,000 meters) and...

Homework Statement Suppose the moon were held in its orbit not by gravity but by the tension in a massless cable. You are given that the period of the moon's orbit is T = 27.3 days, the mean distance from the Earth to the moon is R = 3.85 x 10^8 m, and the mass of the moon is M = 7.35 x 10^22...

Homework Statement a 2000kg lunar lander is in orbit 40km above the surface of the moon. it needs to move out to a 500km orbit in oder to link up with a mothership that will take the astronauts home. it wants the answer in joules Homework Equations ??E2-E1=Work done by non conservative...

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

This came up on another website I read, and it got me to wondering, so I am certain someone here could answer this. The sun is constantly losing mass, as it converts its mass to energy. As it loses mass, its gravitational field weakens, because the gravitational field of a body is directly...

If the Earth's period is 365.25 days and its distance to the (center of the) Sun is one astronomical unit (AU), what is the period, to the nearest day, of an asteroid in a circular orbit about the Sun with a radius of 3.04 AU? please show steps so that I can learn. thanks a lot.

I'm working on this project and I've kind of come to a roadblock. Here's a little background: we have a 1 solar mass star and a planet orbiting it. The planet is defined by 5 orbital elements (period, mass, eccentricity, longitude of periastron, and mean anomaly). I wrote a code that will plot...

Homework Statement A satellite is in an elliptical orbit about the Earth. The center of the Earth is a focus of the elliptical orbit. The perigee (C) is the point in the orbit where the satellite is closest to the Earth's center (F). The perigee distance (P) is the distance from the perigee...

How do you work out the distance of a geostationary satellite from the Earth's surface? Cheers

Many derivations of mercury precession angle per orbit \Delta\Phi, equate this to extra angle per orbit \delta in excess of 2\pi that is \delta = \Delta\Phi But I am getting this relation \sqrt{4\pi\delta}= \Delta\Phi from arc length of helix and circular orbit. What am I doing...

My question is: Photons that orbit at the event horizon, require relativistic time to circumvent the circumference of the black hole relative to an observer external to the black hole, keeping Mr. Einsteins second postulate in mind, that being the velocity of light is constant through vacuum (...

I have been given that this planet has a diameter of 1600km with a uniform density of 52000 per cubic metre. And if its moon is in a geostationary orbit around the planet and assuming that the sidereal is exactly 24 hours. How far is the geostationary orbit above the surface of the planet. And i...

Homework Statement Find the speed of a satellite in geosynchronous orbit? in finding the speed for geosnychronous orbit the Time is 1 day, or 24hours , 86400 seconds. I tried using T^2=4(pi)^2(r)^3/GM is the eqn. I manipluated it into: r=(GM_earth_T/4(pi)^2)1/3 Once I found r I...

Homework Statement Mars's orbit has a diameter 1.52 times that of Earth's orbit. How long does it take Mars to orbit the Sun? in years. Homework Equations I tried using T^2=4(pi)^2r^3/GM I got 1.88years...but its wrong... The Attempt at a Solution

A particle moves in an elliptical orbit in an inverse-square law central force field. If the ratio of the maximum angular velocity to the minimum angular velocity of the particle in its orbit is n, then show that the eccentricity of the orbit is \epsilon = \frac{\sqrt{n}-1}{\sqrt{n}+1}...

At what altitude and velocity is an orbit geosynchronous? Please include calculations. I am too old for this to be a homework problem - just exercising my mind.

A moving "orbit"? I'm using the term orbit in a non-mathematical sense, because I don't know what it is I've just thought up! It seems very interesting to me, does anyone know what it is I've stumbled on? Imagine an algorithm that is iterated as follows: *I must stress that g( ), f( )...

What are the phenomenon so far encountered by scientists, that happens in Earth orbit? I mean observational anomaly One of such phenomenon is pioneer anomaly. what are the others? Anyone please add to the list, or refer me to some reading resource

Hi there I have a question regarding the attom Not saying its possible but if it was what would happen to matter if you could slow the speed of the electron orbit? I am not into physics but very curious. Thanks in advance

Orbit Simulation logic I'm building an Orbit Simulator (this is what I build every time I learn a new language). I'm looking for the pseudocode for calculating the acceleration. I know the formula: G*m/(d2-d1)^2, I'm trying to figure out why I'd need the hypotenuse. You see, I can...

Q.Calculate the velocity of a satellite moving in a stable circular orbit around the Earth at a height of 5200km. A. I wasn't sure which formula to use on this problem is it Ac=(V^2)/r

Hi, Is to possible to have an orbit (say around the sun) where the planet (say the earth) would be slightly tilted (as it is) but would present the same hemisphere (say the north one) toward the sun all the time ? It would mean that the Earth would have to wobble? Is that possible ? It...

What is the significance of negative mechanical eneregy of a body? Eg. electron in 1st orbit of H atom

if i know a meter is observed at an altitude of 6km, to be traveling with an initial velocity of 20 km/s and the decelerating at a rate dv/dt=0.2km/s^2, which formula i should use to get the length of the semimajor axis of the meteor'orbit?

Homework Statement I'm just trying to rearrange a few equations for gravity, period, radius etc., and am a tad confused. Homework Equations (G*M)/R^2 = (4*pi^2*R)/T^2 Want to rearrange for T and R. :) The Attempt at a Solution I got T to a point of... T^2 = (4*pi^2*R)*(R^2)/GM I...

Homework Statement (a) Consider a system composed of two electrons with orbital angular momentum quantum numbers l_1 = 4 and l_2 = 2. Give all the possible values of (i) the total orbital angular momentum quantum number L, (ii) the total angular momentum quantum number J. [8] (b) Explain...

We started learning about gravitational force and how gravity is different everywhere. But than we talked about circular orbits and how we can find its period and such So to remain in circular orbit the gravitational force between 2 planets pull each other, but doesn't those opposite reaction...

What would be required to cause photons to orbit an object?

If it takes the moon 27.4 days to complete one orbit about the Earth, why does it take 29.5 days between a full moon to full moon cycle? Any mathematical proof would be helpful, thanks.

help deriving this elliptical orbit equation?? Hi guys, this is my first post on these boards. just found out about this forum and I am really happy because i often find i need a place like this to ask questions and my prayers are answered! im a physics/computer science major in my second year...

Im trying to learn how to calculate orbits. Comet 17P Holmes e: 0.432668 q: 2.053207 Ascending Node: 326.8586 w: 24.2856 Inclination: 19.1134 Epoch: 2454600.5 (2000) Tp: 20070504.5695 I can calculate Semi Major Axis, Semi Minor Axis, semi-latus rectum, Period in years a =...

[SOLVED] Density of a planet using orbit of a satellite Homework Statement A satellite is in a circular orbit about a planet of radius R. If the altitude of the satellite is h and its period is T, show that the density of the planet is \rho=\frac{3\pi}{GT^2}(1+\frac{h}{R})^3 The...

[SOLVED] Energy required to place a satellite in orbit Homework Statement A 200-kg satellite is placed in Earth orbit 200 km above the surface. What is the minimum energy necessary to place this satellite in orbit (assuming no air friction)? The Attempt at a Solution To solve this...

Hi I have a question regarding the Moon's orbit and general relativity. I think I understand the concept of space time, that an object placed in the fabric of space time distorts the fabric of space time. I also understand how "Classicly" the moon stays in orbit. Going back to GR and...

If the Earth orbits the sun how can astronauts fell no attraction to the sun in space. Even pluto which is 4500 million years away, still orbits the sun.

A 619 kg satellite is in circular orbit 7.84x106 m above the surface of the Earth. Find: a) the acceleration due to gravity created by the Earth at the distance of the satellite. correct check mark m/s2 b) the weight of a 70.4 kg astronaut inside the satellite. Equations: Fg = G M...

[SOLVED] satellite in low-eart orbit Homework Statement If a satellite is in a sufficiently low orbit, it will encounter air drag from the Earth's atmosphere. Since air drag does negative work (the force of air drag is directed opposite the motion), the mechanical energy will decrease. If E...

Two photons are traveling parallel to one another. Can the photons orbit one another perpendicular to the direction of travel? That is can the photons follow a stable long spiral path in flat space-time. The photons have no rest mass but they are not at rest. If they are traveling (...

Homework Statement An open orbit in a monovalent tetragonal metal connects opposite faces of a Brillioun zone. A magnetic field is normal to the plane of the open orbit. Describe in real space the motion of the electron on this orbit in the presence of the magnetic field. Homework...

Hi, I was just going over some equations for velocity with respect to bodies revolving around the sun. I wanted to figure out the ratio of tangential linear velocity (i.e. speed) of a body when it is at its perihelion to its velocity at aphelion. In other words, I wanted to solve for...