Orbit Definition and 1000 Threads

Tom and Jerry decide to go space travel. They are in a spaceship traveling in a circular orbit completing one revolution in 12 hrs (43200seconds) a. Calculate speed of the spaceship relative to the centre of the Earth b. Calculate Tom's weight while he is in orbit around the Earth.

There is a nuance of special relativity that I cannot seem to grasp. This may be very similar to the twin paradox, so I am trying to find out what the critical points are. If I hop into my spaceship and orbit Earth at 0.995C for, say, 100 years, I will see Earth's clock progress at an...

The Galactic Center of the Milky Way is about 25,900 light years away from the solar system. Its mass is 4.31E6*(Mass of the Sun). What I would like to know is what is the elliptical, circular, or etc orbit around the singularity especially the vector v and vector r. And if there is one, the...

As topic says Can we see Nuclear Explosion form orbit altitued? or even form space? Just curious.

Hii guys.I have this problem.Can anybody help me on this.tq Homework Statement A satellite is in a circular polar orbit at a height of 870 km, the orbital period being approximately 102 min. The satellite orbit passes directly over a beacon at sea level. Assuming an average value of...

elliptical orbit question please help Homework Statement see attachmentHomework Equations 2a (average distance of satellite from central body) = A (aphelium) + P (perihelium) ME = KE + PE ME = -GMm/24 KE = .5mv^2 PE = -GMm/r ME orignall = ME final The Attempt at a Solution I tried to put ME =...

[SIZE="5"] We know that the Earth revolves around the sun in an oval orbit the sun occupies one of its centers On this basis, the distance from the sun is not constant and the land closest to the sun in Maicon on Jan. 3 and and be further from the sun on July 4, the difference between the...

An asteroid is orbiting around the sun at a distance of 4.2x 1011 m. If the Earth orbits around the Sun at a distance of 1.5 x 1011 m with a period of 3.2 x107 s, what is the period of the asteroid? Im thinking it was 9.0 x 10^7 s ?

Homework Statement An electron orbits in a 5.76 mT field with an angular momentum of 6.10 x 10-26 kg m2/s. What is the radius of the orbit (in m)? Homework Equations F = mv2/r F= QRB The Attempt at a Solution MV2/r = qrb v = wr so i plugged and my answer is still wrong .any help...

Sorry if this is in the wrong forum. I have the equation r = \frac{a(1-e^2)}{1+e \cos \theta} , and I'm wondering what the physical significance of the numerator is. More specifically, what is 'a' (since e is what it usually is)? I've seen various other representations with terms like...

Homework Statement a satellite is set to orbit a planet of mass 4X 10^20 kg . It is placed at a distance of separation of 10^7m with a velocity of 30 degrees to the line connecting the center of the planet and the satellite. What will be its eccentrity fo orbit? (Answer is .89) Homework...

Hi guys, I've been trying to make a longitude and drift rate propagator for a geostationary satellite but the equations do not take into account other perturbing forces apart from the Earth's triaxiality. Longitude = Initial Longitude + Initial Drift Rate * Elapsed Time + 0.5 *...

Homework Statement Two satellites have mistakenly been put in identical Earth orbits of radius R. Satellite A with mass "m" is orbiting clockwise while satellite B with mass "2m" is orbiting counterclocwise. The two satellites have a head on collision and move as one body after the collision...

Homework Statement a planet in elliptical orbit about a star has speed of 100 m/s at its closest approach of 1X 10^10m . what is the speed at its furthest approach of 3X10^10m? What has happened to its total mechanical energy? Homework Equations The Attempt at a Solution

Imagine a planet in elliptical orbit around a star, without any perturbation from third bodies and moving in perfect vacuum. The only force acting in the system is gravity. As the planet gets closer to the star, gravity acts in the direction of its motion, so it gains speed and KE but loses...

Homework Statement Determine the time it takes for a satellite to orbit the Earth in a circular "near-Earth" orbit. The definition of "near-Earth" orbit is one which is at a height above the surface of the Earth which is small compared to the radius of the Earth, so that you may take the...

Homework Statement The 4p → 4s transition in 19K produces a pair of lines at 766.49nm and 769.90nm. Estimate the value of <(1/r)dV/dr> for the optically active electron in 19 K Homework Equations The Attempt at a Solution help needed urgently please. All i know so far is...

Protons having momentum 7.63*10^-16 kg*m/s are held in a circular orbit of radius 1 km by an upward magnetic field. What is the magnitude of the field? Answer in units of T (Tesla). r=mv/qB; where r is the radius of the circular orbit, m is the mass of the particle, v is the velocity of...

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 5e10 m (inside the orbit of Mercury), at which point its speed is 9e4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6e12 m from the Sun...

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 5e10 m (inside the orbit of Mercury), at which point its speed is 9e4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6e12 m from the Sun...

last night i was watching a public broadcasting special about climate change, and they mentioned that 125,000 years ago there was a large peak in CO2 in the atmosphere which caused a rise in global temp. they stated that the effect was caused by a "change in the Earth's orbit around the sun."...

I am curious how easily my theory can be disproven... I have never heard anyone mention it, and as well I have no knowledge to support it. I was daydreaming of what would cause a planet simular to ours, to lose all of its elemental resources. It could be the fact that I am reading a book on...

I have a Question: suppose we have a satellite (m=400kg, V[SIZE="1"]0=40m/s) and we want to put it in a 1000km orbit (r=1000km)...what should be the launch angle? P.S: is this question complete?[SIZE="1"](For Lack Of A Better Word) .. I mean do we have a formula which relates these...

our suns galactic orbit?? Friends, I have always heard that it would be almost impossible to track the path of the sun through the galaxy. Yet I have come across this paper: ICE AGE EPOCHS AND THE SUN’S PATH THROUGH THE GALAXY D. R. Gies and J. W. Helsel Department of Physics and...

Homework Statement It is required to put a satellite into an orbit with apogee of 5R/2, where R is the radius of the planet. The satellite is to be launched from the surface with a speed Vo at 30degrees to the local vertical. If M is the mass of the planet, show that (Vo)^2 = 5GM/4R. Assume...

Could someone explain the idea, method of how Earth orbit was derived, in non-mathematical terms (well, some math is fine too)? I am more interested in the (ingenious) engineering/experimental approach behind it. I guess it's related to or requires the determination of Earth mass, and from the...

We're doing orbits and such in physics at the moment, and out teacher said "if a geostationary satellite gets further away, it has to go faster". I get this, because with a bigger orbit it would have to move faster to stay above the same point on earth, more distance to travel in the same time...

An Earth satellite remains in orbit at a distance of 6104 km from the center of the Earth. What speed would it have to maintain? The universal gravitational constant is 6.67X10^-11 N m^2/kg^2. The mass of the Earth it 5.88X10^24 kg. Answer in units of m/s. So again, missed the class. I'm...

Homework Statement Pluto moves in a fairly elliptical orbit around the sun. Pluto's speed at its closest approach of 4.43x109km is 6.12km/s. What is Pluto's speed at the most distant point in its orbit, where it is 7.30x109km from the sun? Homework Equations Conservation of energy...

Homework Statement One of the n=5 states of hydrogen is split by spin-orbit coupling into two levels with an energy difference of 0.0039 cm^-1 . Determine the 'l' quantum number for this state and predict the analogous splitting for doubly ionised Li . Homework Equations The fine...

Homework Statement A spaceship of mass m circles a planet (mass = M) in an orbit of radius R. How much energy is required to transfer the spaceship to a circular orbit of radius 3R? Homework Equations K=.5mv^{2} U_{g}=-\frac{GMm}{r} v=2(pi)r/T v=(ar)^.5 The Attempt at a Solution I...

can someone explain how bohr used the mass of the nucleus in helium to develop a ratio of 4.0016 of the original rydberg constant for hydrogen? I can't seem to find the proof anywhere, I read vaguely that he found this value by calculating the increased charge in the nucleus and using the mass...

From Carroll and Ostlie “An Introduction to Modern Astrophysics” prob 2.6 b After determining angular momentum of sun-jupiter orbit system in part a, the question then asks you “What contribution does the sun make toward the total orbital angular momentum. It says assume Jupiter is in a...

The International Space Station, with a mass of 370,000 kg, is orbiting the Earth at a height 335 km and needs to be boosted to an orbit of 352 km. Calculate the energy needed to boost the ISS to its new height. m = 370,000 kg M = 5.98 x 10^24 kg G = 6.67 x 10^-11 Nm^2/kg^2 Initial...

Hello all: I'm interested in minor planet.Could you tell me how to calculate the orbit of a minor planet accurately? Is there any software to calculate it? And how to get the latest information of the minor planets?Any websites of famous international institutes who observe and...

I understand that planets orbit follows a curve in spacetime created by the sun. Most of the planets follow the curve with seemingly a consistent radius. However Pluto follows an ellipse around the sun an appears to be inconsistent with the curve in spacetime created by the sun. Apologies if...

I've heard that the moon is very slowly moving away from Earth. Will it eventually escape Earth's orbit?

http://www.science27.com/forum/coworbit.jpg How much relative stronger force would it require to keep a bull in orbit when the radius was 4 times shorter. And how can this are calculated...? (The bull only wants to move straight ahead , weight and speed is the same) 4 times ? 2...

Homework Statement A 600kg satellite moving in a stable circular orbit about the Earth at a height of 4000km (G=6.67x10^-11 NM^2/kg^2, Re=6380km, Me=5.98x10^24kg). Calculate the speed of the satellite at that height. Calculate the orbital period (T), the time for one revolution Calculate...

How much energy would it require (per second or per orbit) to keep the moon in orbit, if gravity did not exist? Pretend the gravity from Earth did not exist, and the moons still should orbit like it does. Does it exist a equation to calculate that?

At radius 1: Acceleration Due to Gravity (ADG) is 16 times as strong as at radius 4. The object at radius 1 has 4 times so much KE and 4 times so little time to change the course (into a continues circular orbit) hence ADG must be 4*4 times so strong, = ADG 16 at radius 1,- to keep the...

Homework Statement An Earth's satelite is in equatorial orbit at 352,000 km above earth. What is the orbital velocity (m/s) of the satelite (4 sig figs) Homework Equations g1d1^2=g2d2^2 to find gravity at the height of the satellite The Attempt at a Solution I don't really know...

Homework Statement A distant star has a single planet circling it in a circular orbit of radius 3.33 × 1011 m. The period of the planet’s motion about the star is 836 days. What is the mass of the star? The value of the universal gravitational constant is 6.67259 × 10−11 N · m2/kg2...

Homework Statement High above the surface of the Earth, charged particles (such as electrons and protons) can become trapped in the Earth's magnetic field in regions known as Van Allen belts. A typical electron in a Van Allen belt has an energy of 55 keV and travels in a roughly circular orbit...

Homework Statement Ok so i had all of this typed up and some work typed out and then the page refreshed and i lost it all so this one is going to be shorter and more brief. I have to create a spreadsheet and graph of altitude vs time and speed vs altitude. My goal is to place a rocket into a...

If you were to measure the area of a sector that a planet would sweep out in one week around the sun. It would be the same no matter what time of the year it was. What conservation principle is this example demonstrating? Linear, angular or both? and why?

Hallo, i have a question here, hope someone can answer it. :) As we know, two object attract each other. The closer the object, the stronger the force of attraction. This explain why Earth is attract by sun, but moon is attract by earth. (i guess.) But here i got a question, we know that...

The following is the equation for a Keplerian stable orbit at the equator around a Kerr black hole- \tag{1}v_s=\frac{\pm\sqrt{M}(r^2\mp2a\sqrt{Mr}+a^2 )}{\sqrt{\Delta}(r^{3/2}\pm a\sqrt{M})} where M=Gm/c^2,\ a=J/mc and \Delta=r^2-2Mr+a^2 which for a static black hole would reduce to -...

At what horizontal velocity would a satellite have to be launched from the top of Mt. Everest (elevation 8848 m) to be placed in a circular orbit around Earth? I'm not sure where I'd start here, any tips?

Every time Neptune scatters bodies to Jupiter, Neptune gains energy and its orbit becomes larger. How much mass would Neptune have to scatter to Jupiter for Neptune’s orbit to have changed from a circular orbit at 22AU to a circular orbit at 30AU? Give the answer in terms of Neptune’s mass...