Satellite Definition and 671 Threads

Imagine a spherical, nonrotating planet of mass M, radius R, that has no atmosphere. A satellite is fired from the surface of the planet with speed vo at 30 degrees to the local vertical. In its subsequent orbit the satellite reaches a maximal distance of 5R/2 from the center of the planet...

When a satellite is in a circular orbit around the Earth how does a rocket thrust from the satellite effect the orbit. Example when the rocket is fired toward the Earth and another example when the rocket is fired orthogonal to the plane of the orbit. Thank you

I have a satellite antenna in my backyard (the big antenna, not the small one from Direct TV) and I don't know how to use it. I did some research and I think it's called the C-band antenna and I do have to pay around $30 for service/month just like we have to pay for cable TV. I have a receiver...

Dear Forum friends, Here's a problem I can't solve: The space shuttle Atlantis tries to put a satellite in a circular orbit with vo velocity. But they make a mistake and the actual velocity is vo(1+e). I have to find the eccentricity of the orbit when e>0 and e<0, considering |e|<<1...

It was a little after sunset and I noticed a star at an Altitude of about 90 degrees. It wasn’t moving and it looked like any other star, but all of a sudden it started to get dimmer. I thought maybe a cloud was passing over, and there were a few small clouds around, but none I could see...

Hi People ,Could You Please help me with this question... There's a satellite called Meteostat which in the geostationary orbit.Could you explain me why its periodic time is not exactly equal to 24 when it is viewed by an observer positioned at a point on the equator...

Hi people, could someone please help with these: On 19th June 1981, an experimental meterological satellite of mass m=700kg, was placed in a geostationary orbit using the launch vehicle Ariane. Calculate: i. The radius of the geostationary orbit given that the period of revolution of the...

Hi People I had problems solvin this question could you please help me, The question: On 19th June 1981,an experimental meteorological satellite of mass m=700 kg,was placed in a geostationary orbit usingthe launch vehicle Ariane. Calculate: a) the radius of geostationary orbit...

Hi, I study electrical engineering and I was thinking about some projects. I was thinking about constructing a guided zeppelin. I would also add a GPS so I could program its course. I was thinking about the possible problems. I don't know how could it be controlled in the case of wind. I...

Hi folks, If I have the elements of a spacecraft 's (eliptical) orbit (a,e,i,etc) and the lat/long of a ground station, how can I calculate the times at which the spacecraft will be visibile from the groundstation (preferably in terms of time since perifocal passage)? I've been googling for...

If a satellite in orbit has been slowed down, why does it spiral inwards? The explanation I have been given is that the gravitational force on the satellite is constant but the centripetal acceleration has reduced and therefore there is some spare gravitational force to pull the satellite...

Do man-made solar satellites all have roughly the same orientation of orbit around the sun?

Finally something interesting in the news. Check it out . http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html

http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html

I am a first-year physics/chemistry major in First-term Calculus-based Physics. Normally, I have no trouble with my physics assignments, but this problem...man, i have no idea even where to start, even after analyzing it for two hours straight! Any help would be appreciated! 5. You are an...

can a pendulum clock be used in an Earth satellite

hello everybody: A satellite of mass m used in a cellular telephone network is in a circular orbit at a height of h above the surface of the earth. What is the gravitational force on the satellite? Take the gravitational constant to be G , the mass of the Earth to be m_e , and the radius...

OBL Found!:National Security Agency satellite http://quote.bloomberg.com/apps/news?pid=10000087&sid=awJVc6Kiq75c&refer=top_world_news The area is under surveillance from a satellite while forces await orders, the newspaper said in its early Sunday edition, AFP reported. Bin Laden's...

A 1700 kg satellite is orbitting the Earth in a circular orbit with an altitude of 1800 km. a) How much energy does it take just to get it to this altitude? . . . Ok, I just need help getting the setup on this first part. The amount of energy need to get to this altitude would the...

Imagine a universe with nothing in it exept for the earth. Now if you were to put a satalite up in space with a geosyncronized orbit, the gravity of Earth would not pull the object down. but how can that happen if the Earth is not spinning? At least not spinning relative to anything(because...

I have always had a fascination of Pluto, is it labeled as a lost satellite of Neptune, or a planet on it's own because of Charon?