Satellite Definition and 687 Threads

Homework Statement If a satellite drops to a lower orbit, how does this affect its centripetal force, period, tangential speed, and angular velocity? Homework Equations Fc=m(v2/r) The Attempt at a Solution Because of the formula above, the satellite experiences an increase in Fc...

Homework Statement A satellite moves in a circular orbit around the Earth at a speed of 6.6 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. The value of the universal gravitational...

how is an artificial satellite set on an orbit around the earth?

Geostationary satellites need to be in equatorial plane. Now my first doubt is what exactly is the equatorial plane? Is it just locus of all points have 0 latitude or locus of all points having a fixed latitude say 5. {Like does a orbit in equatorial plane mean that its latitude is 0...

Homework Statement If there's a satellite(not man-made although I wonder it would matter) is chaotically orbiting around two planets, will it ever cross the same orbital path twice or not? Homework Equations The Attempt at a Solution I think if the system is chaotic, it will not...

Homework Statement The gravitational field strength on the moon, which has a radius of 1.74 x 10^6 m, is approximately 0.17 as large as the gravitational field strength at the surface of the earth. The satellite is at an altitude of 100km above the moon. What is the radius of the orbit of...

No source of friction in space to slow you down. So if you want to stop motion, you have to rely on other forces. Consider the problem of a moving satellite using only the following commands: 1) turn on the main thruster 2) tun off the main thruster 3) rotate 180 degrees how fast can...

Homework Statement If the space station orbits the Earth 225 km above the surface , what are the satellites orbital speed and period ? The mass of the Earth is 5.97 E24 kg and the radius is 6.38 E6 m. Homework Equations The Attempt at a Solution I already have the speed ( v ) , I...

Homework Statement Suppose that a satellite is in a circular orbit at a height of 2.00x10^6 m above Earth's surface. What is the tangential speed of a satellite in this orbit? Homework Equations vt=rw The Attempt at a Solution I have been stuck for almsot 30 minutes, I think that...

Homework Statement Question 1: What speed must a satellite have to orbit the Earth at a distance 7.8 x 10^7 m/s from the Earth's centre, where the acceleration due to gravity is 0.065 m/s^2? Question 2: An object orbits the Earth at a constant speed in a circle of radius 6.38 x 10^6 m...

Hi guys. I do not know artificial satellite revolve around Earth in a circular path or an ellipse path but do we have physics and mathematical proof that artificial satellite revolve around Earth in circular/ellipse path?

Homework Statement Calculate the total energy of a geosynchronous satellite (one that orbits over a fixed spot) with a mass of 1500kg, orbiting Earth at a height of 325km with an orbital speed of 5000m/s Homework Equations ET=Ek+Ep Ek=(0.5)(m)(v)^2 Ep=(m)(g)(h) The Attempt at a Solution...

Hi, I'm familiar with the use of orbital elements to describe the motion of a satellite, and using those to calculate the state vector (position and velocity as a function of time) of the satellite. I am wondering how it is possible to use this information to calculate when a satellite...

Homework Statement Freq band uplink: 13 - 14 GHz downlink: 10 - 11 GHz transponder bandwidth: 5 transponder x 54 MHz channel using linear polarization EIRP = 59 dBW G/T = 13.5 (max) dB/K QPSK modulation Homework Equations If each user is offered data rate of 256 kbps, with bit...

Homework Statement A satellite is designed to orbit Earth at an altitude above its surface that will place it in a gravitational field with a strength of 4.5 N/kg. a) Calculate the distance above the surface of Earth at which the satellite must orbit. b)Assuming the orbit is circular...

Homework Statement http://img194.imageshack.us/img194/4638/001ofa.jpg Homework Equations Not too sure to be honest. The Attempt at a Solution Well, r1 cross product m v1 = r2 cross m v2 But, there is a force applied so I have to take that into account. I was thinking, The moment of...

Homework Statement http://img577.imageshack.us/img577/5457/gmblrekp.th.jpg Homework Equations The Attempt at a Solution Proof was asked from me. How do i proof it. In "w^2 sub. uydu", uydu means satellite.

Homework Statement Planet X has a mass of 6.42x10^20 kg and a radius of 2400km. A satellite with a mass of 1500kg is in orbit around Planet X at an altitude of 300km. a) what is the Force of Gravity? b) What is the acceleration of the satellite while in orbit? c) Find the speed of the...

Homework Statement Determine the radial orbit and velocity for a geosynchronous satellite in orbit around the earth. Remember that geosynchronous satellites are located directly above the equator and they remain above a fixed point on the equator as the Earth rotates Homework Equations...

Homework Statement Determine how much energy is needed to move a satellite of mass 500kg to an orbit of height equal to Earth's radius.Homework Equations Gravitational Potential: V = \frac{-GMm}{R} Where M is the mass of Earth (6*10^24kg), m is the mass of the satellite (500kg) and R is the...

Homework Statement A satellite of mass m kg is sent into orbit at a distance of 5R, where R is the radius of the earth. Write down an expression for: a) The potential energy of the satellite in orbit. b) The kinetic energy of the satellite in orbit. c) The minimum work needed to sent...

Hi, can anyone explain satellite beam weights, I think more precisely, phase weights and amplitude weights. I am starting a job next week and at my interview they mentioned these. I am trying to read up on these before I start and can't find anything useful on the internet. Many thanks.

Homework Statement Estimate the speed of a satellite orbiting Earth at an height of 400km. Also determine the period of the orbit. Homework Equations Centripetal acceleration: F=\frac{mv^2}{r} Newton's Law of Universal gravitation: F=\frac{G(MassEarth)(MassSatellite)}{R^2} G =...

1. A 962kg satellite orbits the Earth at a constant altitude of 99km. How much energy must be added to the system to move the satellite into a circular orbit with altitude 195km? 2. Homework Equations : E = (-GMm)/2r \Delta E = Ef - Ei 3. My work (which produced the wrong answer)...

Hello. I was wondering about something the last few weeks and that is if the solar wind can affect communication systems between satellites. I am not referring to the physical damage that the solar wind might produce to the satellite, but the interference it might have on the radio signal that...

Homework Statement A nonrotating spherical planet with mass M and no atmosphere has radius R. A particle is fired off the surface at 3/4 the escape speed. Calculate the farthest distance it reaches from the center of the planet if it's fired of tangentially. Homework Equations l = r x p...

Homework Statement In order for a satellite to move in a stable circular orbit of radius 6736 km at a constant speed, its centripetal acceleration must be inversely proportional to the square of the radius r of the orbit. What is the speed of the satellite? The universal gravitational constant...

"Cutting the cord" to cable and satellite TV Last year, fewer people in the US subscribed to cable or satellite TV. The only areas with increases were the largest metropolitan areas. People are wondering how much of this is due to the economic downturn (with many people needing to cut spending...

Homework Statement A satellite of mass 4600 kg orbits the Earth (mass = 6.0 1024 kg) and has a period of 5500 s. (a) Find the magnitude of the Earth's gravitational force on the satellite. (b) Find the altitude of the satelite Homework Equations Kepler's Equation: R^3/T^2 Fg=...

Homework Statement Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 3600 km.Homework Equations v2=Gm/r F=(Gm1m2/r2 g=(Gm)/r2 G=6.67x10-11Nm2/kg2 rE=6380km=6.3x106m----(Radius of Earth) mE=5.98x1024kg---------(Mass of Earth) The Attempt at a...

Homework Statement A. Suppose you are at the Earth's equator and observe a satellite passing directly overhead and moving from west to east in the sky. Exactly 15.0 hours later, you again observe this satellite to be directly overhead. How far above the Earth's surface is the satellite's...

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 Given: G = 6.67259 × 10−11 Nm2/kg2 The acceleration of gravity on the surface of a planet of radius R = 4190 km is 6.5 m/s2. What is the period T of a satellite in circu- lar orbit h = 14120.3 km above the surface? Answer in units of s. Homework Equations...

I've been putting this off for a while, but I saw something kinda neat last month (mid-late September actually) and I'm curious to see how common it is and to understand it a little better. My husband, daughter and I were staying at a cabin in the mountains and got back to it one night when...

Homework Statement Find Velocity of satellite in GS orbit around Earth but you cannot use r in the solution And find r of satellite in GS orbit but you cannot use velocity in the solution Homework Equations V=Sqroot of G*Me/r, Me being the mass of the Earth but you can't use r from this...

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...

This is not a connection. I just want ot know how they dervied this formula from gain Consider a geosynchronous satellite whose global beam covers all of the visible Earth's surface. The radius of the Earth is about 6400km, and the altitude of the satellite is 36,000km. How would you work...

Homework Statement What is the period of an Earth satellite orbiting at a height of 1.80 x 10^7m above the surface of the earth? Use G = 6.67 x 10^-11 N.m2 Kg-2 Homework Equations T = SQRT 4*pi^2 * R^3/G*Mass of the earth The Attempt at a Solution I added the Earth mass and the...

Homework Statement The space shuttle launches an 890-kg satellite by ejecting it from the cargo bay. The ejection mechanism is activated and is in contact with the satellite for 3.0 seconds to give it a velocity of 0.20 m/s in the z-direction relative to the shuttle. The mass of the shuttle is...

Homework Statement So I just finished a physics test and I'm not sure if I approached a question correctly... Our professor gave us the mass of a satellite, and the mass of an imaginary planet and its radius. Then he gave us the amount of initial kinetic energy given to the satellite when...

1. Homework Statement [/b] calculate the velocity of a satellite 3600 km above the surface of the earth. Homework Equations Fnet= mg=ma mg=ma g=V2/r r=3600000 The Attempt at a Solution 5940 m/s I am pretty sure this is correct just want to make sure.

In certain cases, using both the momentum principle and energy principle to analyze a system is useful, as they each can reveal different information. You will use the both momentum principle and the energy principle in this problem. A satellite of mass 4000 kg orbits the Earth in a circular...

THeres probably an explanation for these, but the forum I discussed it on is a music forum so people are presuming UFO's/ExtraTerr Check this link out http://www.flashearth.com/?lat=38.643836 Its supposedly NASA's daily satellite images of the Earths surface now zoom in on thick clouds and...

Suppose a nut becomes loose and gets detached from a satellite revolving around the earth. The nut will continue in its orbit due to its inertia. My question is how can an astronaut make it land on earth?

This is a statement in my book - "The relative velocity of a satellite moving in the direction of Earth's rotation (for an observer on earth) is given as Vs - Ve." We always define relative velocity of a particle say P in a frame of reference S1 accelerating w.r.t to an inertial frame of...

Will the results from the PLanck satellite shed any light on Loop Quantum Cosmology or any other form of matter bounce?

Homework Statement An Object is fired vertically upward from the surface of the Earth ( of radius RE ) with an initial speed vi that is comparable to but less than the escape speed vesc Show that the object attains a maximum height h given by h=\stackrel{R_{E}v^{2}_{i}}{v^{2}_{esc}-v^{2}_{i}}...

Homework Statement An 870-lb satellite is placed in a circular orbit 3973 mi above the surface of the earth. At this elevation the acceleration of gravity is 8.03 ft/s2. Determine the kinetic energy of the satellite, knowing that its orbital speed is 12,500 mi/h. Homework Equations...

Homework Statement The weight of a satellite in a circular orbit round the Earth is half of its weight on the surface of the Earth. If the mass of the satellite is 800kg, determine (i)the altitude of the satellite (ii)the speed of the satellite in the orbit (iii)the minimum energy required...

Homework Statement A satellite is spinning clockwise and has four low-mass panels sticking out. A tiny meteor rips through one of the panels and continues in the same direction, but with reduced speed. Afterward, calculate vx and vy components of the center-mass velocity of the satellite. Here...