Satellite Definition and 687 Threads

Homework Statement An Earth satellite is revolving in a circular orbit of radius 'a' with velocity 'v0'. A gun is in the satellite and is aimed directly towards the earth.A bullet is fired from the gun with muzzle velocity v0/2.Neglecting resistance offered by cosmic dust and recoil of...

Homework Statement A satellite will crash int the Earth if its velocity: stays constant increases dramatically decreases dramatically Answer: decreases dramatically.??

Homework Statement A satellite is describing a circular orbit around a massive planet of radius R. The altitude of the satellite above the surface of planet is 3R and its speed is v_0. To place the satellite in an elliptical orbit which will bring it closer to the planet, its velocity is...

I think we can find flight 370 if we have satellite images of the flight. The question is, do we have any such images of the actual flight as it was in progress? It was a clear night. Even if the images are low resolution, as long as the color of the plane is distinguishable from its...

Homework Statement The average speed of an orbiting satellite is 20,000 mph. How much time is required for the satellite to orbit Earth? (the satellite is orbiting 250 miles above the Earth’s surface, and remember that the Earth has a radius of 3,963 miles.) Homework Equations t=d/v...

Homework Statement A communications satellite is in a synchronous orbit that is 3.33×107 m directly above the equator. The satellite is located midway between Quito, Equador, and Belem, Brazil, two cities almost on the equator that are separated by a distance of 3.30×106 m. Calculate the time...

So I found this problem in my 10th grade Physics workbook and since its test time tomorrow I must be able to work everything out. The problem I'm having here is just the calculations which give me a time short of one hour from the answer on the book. Anysways, please have a go: Homework...

1. Determine the ratio of the masses of the planets Earth and Mars by using only information about their orbital periods and orbital radii about the sun. Assume the planets can be treated as points with mass and assume circular orbits. Homework Equations Gravitational force: F_g = G m_1 m_2 /...

Homework Statement It is required to put a satellite of mass m into orbit with apogee 2.5 times the radius of the planet of mass M. The satellite is to be launched from the surface with speed v0 at an angle of 30° to the local vertical. Use conservation of energy and angular momentum to...

"Perpetual Motion" From Satellite Revolution This is going to sound very far fetched, and I know very little about the laws of physics, admittedly (I don't even know if I'm posting this in the right area), but curiosity compels me. I was wondering if it would be possible to harvest energy...

Hello. Below I have a problem I can't quite understand to the full: http://www.israup.net/images/027d25c3acde86a09bcb9e1ed869560a.png http://www.israup.net/images/6757f5c30cbcfe051295b1b1e4614489.png And that is the suggested solution...

Homework Statement At a certain instant, the earth, the moon, and a stationary 1030kg spacecraft lie at the vertices of an equilateral triangle whose sides are 3.84×10^5km in length. Find the magnitude of the net gravitational force exerted on the spacecraft by the Earth and moon.Homework...

Hi, Homework Statement A satellite with mass m orbits a planet of mass M in a circular path with radius r and velocity v. Due to some internal technical failure, the satellite breaks into two, similar parts with mass m/2 each. In the satellite's frame of reference, it appears the two parts...

Hey Dear forum, I know I'm wrong, but I don't know why: Since the Earth's descends 5 meters for every 8km, a horizontal speed of 8km/sec will put an object to rotate around the Earth (neglecting air resistance). I.e. in one second it will fall 5m below it's initial height, but so will the...

Homework Statement R is Earth radius. A satellite is launched 2R from the center of the earth, vertically above the northpole, at an angle of 60° to the vertical. The satellite crashes on the southpole. Find the launch velocity and the maximum distance to the center of the Earth from its...

Warning read on your own risk: This is my first post here. I'm new to english, sorry for my bad grammar. Homework Statement A satellite is launched one time Earth radius straight above the northpole (two times radius from center), with an angle of 60° to vertical. Find the launch velocity...

I'm doing a research paper based on mining asteroids or near Earth objects. I was wondering, could we pull/move a relatively large asteroid About half as large as the moon could we use is as an anchor to launch missions? Thanks!

[b]1. Homework Statement A 7655 kg satellite has an elliptical orbit. The point on the orbit that is farthest from the Earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the Earth is called the perigee and is at the far left side...

Homework Statement An Earth satellite has a speed of 29300 km/hr when it is at its perigee, 246 km above Earth's surface. Find the apogee distance, the speed at apogee, and the period of revolution. I thought I had this problem but I must be doing something silly because my answers are wrong...

Homework Statement a satellite will remain in orbit such that the centripetal acceleration is equal to the acceleration due to gravity. The radius of the satellites orbit is 6.37*10^6m. What speed must the satellite travel to stay in orbit? Homework Equations ac=v^2/r The Attempt at...

Homework Statement Estimate (in the order of magnitude) the size of a satellite lens (aperture radius) required to resolve a human face at the surface of the Earth if the satellite is orbiting at an altitude of 100km. Assume λ to be 600nm.Homework Equations θ = 1.22 (λ/D)The Attempt at a...

I may be being stupid here... But I'm trying to derive such an equation to no avail. Maybe such a formula requires more than one variable - but I would like to easily display this graphically. To start out the derivation I stated that the Surface Velocity = (2pi/T)-(v/r) where v/r=angular...

Homework Statement An Earth satellite moves in a circular orbit 790 km above the Earth's surface. The period of the motion is 100.5 min. (a) What is the speed of the satellite? (b) What is the magnitude of the centripetal acceleration of the satellite?Homework Equations a= v2 / r T = (2 Pi...

Homework Statement a. What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth? Homework Equations Velocity of a satellite= v^2= G (Me/r) The Attempt at a Solution V^2= 6.67E-11 (5.98E24/6.37E6) I calculated this and my answer...

Finding the distance a satellite travels. Help! Homework Statement A satellite orbits at a distance from the Earth's center of about 6.20 Earth radii and takes 21.7 hours to go around once. What distance (in meters) does the satellite travel in one day? Homework Equations Velocity will...

Homework Statement A 135 kg satellite experiences a gravitational force by the Earth of 960 N. What is the radius of the satellite's orbit. And altitude? I already found the radius and I came up with 7489.99 km. I just need help finding the altitude. Homework Equations Equation for...

Homework Statement A 100 kg satellite is surrounded by four asteroids. Asteroid A has a mass of 8.5x10^5 kg and is 800 km North of the satellite. Asteroid D has a mass of 9.0x10^4 kg and is 500 km West of the satellite. Asteroid B is 1200 km south of the satellite and asteroid C is 1500 km...

I am trying to write a program to show the flight of a satellite in the neighbourhood of two large planets. In all of this the mass of the satellite is negligible. I have the potential energy from planet1 = pe1 and the potential energy from planet2 = pe2 and the kinetic energy of the...

Homework Statement GPS determines your distance from a satellite by measuring how long it takes an electromagnetic wave to travel from the satellite to you. Imagine that a satellite is located at a distance of 127.2km and is moving away from you at a speed of 12.0km/s. a)how long will it...

how the direction of artifical satellites are changing in outer space by controlling from earth? how the reaction force is created at space without any medium .

Homework Statement What multiple of the distance between the centre of the Earth and that of the moon is the distance between the centre of the Earth and a geostationary satellite which above a fixed location on the equator?Take the cycle of revolution to the moon around the Earth to be 27...

Homework Statement An artificial satellite is traveling in a circular orbit around the earth.The radius of the orbit from the Earth's center is r.Assume that the Earth is a uniform sphere of radius R.The magnitude of acceleration due to gravity at the surface is g.What is the period of the...

I know of the concept of a space elevator, and that right now it's not technologically in our grasp, but I thought up a variation on the concept. Using a cord with huge tensile strength, could an object on, or very close to, Earth be levitated off of the ground if it was connected with this...

As I understand it, if Hubble was turned on the Earth in a geo-stationary orbit it would struggle to pick out a couple of tanks on the ground. So how large would a telescopic satellite need to be (geo-stationary) to pick out a nickel on the ground? Is it even technically possible? I gather...

Homework Statement Homework Equations The Attempt at a Solution Parts I'm unsure of: Sketching of graphs in (a) and (b). I know increasing its energy will shift the entire graph upwards. But does it shift it rightwards if the angular momentum is increased? Last part, they said to ignore the...

Would it be possible to have a satellite orbiting Earth slowly enough that it always stays between Earth and the sun? Not necessarily directly between so that its shadow is always on Earth, but such that, with an orbit that would take it "behind" Earth, it would orbit at a speed such that when...

I'm trying to get the transfer function of this rigid control system that uses rate feedback to stabilize it. Using k=1 and kv=0 Attempt at a solution. When kv=0, the rate feedback is removed. In the block diagram, I moved the pickoff point and used the cascade rule to get 1/s^2 and...

If the spy satellite, which is 200km above the earth, uses a concave mirror 2m in diameter and yellow light at 600 nm find the answer. show all formulas and work to support the correct solution. with that resolving power what could the spy satellite actually see? (ignore variations in air...

Homework Statement A geostationary satellite of mass m, speed v orbits earth. (a) Find expressions for (i) Radius of the orbit, r0. (ii) Satellite's Speed (b) A meteorite with mass m and speed v approaches in the direction towards the centre of the Earth and collides with the satellite...

Thanks in advance - this problem has been bothering me for a while! I'm working with an unpowered spaceship orbiting a large mass M. The orbit is circular and it is following the geodesic freely. It has an orbit radies of r = R. My question is this. The metric of the space-time curvature...

Homework Statement A satellite is in an elliptic orbit around the Earth. Its speed at pedigree A is 8650 m/s. (a) Use conservation of energy to determine its speed at B. The radius of the Earth is 6380 km. Use conservation of energy to determine the speed at the apogee C. Homework...

Universe as an Infant: Fatter Than Expected and Kind of Lumpy http://www.nytimes.com/2013/03/22/science/space/planck-satellite-shows-image-of-infant-universe.html?nl=todaysheadlines&emc=edit_th_20130322the universe may be 13.8 B years old [a bit older than thought] and expanding more slowly...

A satellite of mass 7500 kg orbits the Earth in a circular orbit of radius of 7.3(10^6) m (this is above the Earth's atmosphere). The mass of the Earth is 6.0(10^24) kg. What is the minimum amount of energy required to move the satellite from this orbit to a location very far away from the...

1. At what altitude will a satellite complete a circular orbit of the Earth in 4.4 hours? Homework Equations T^2 = ((4π^2)(r^3))/GM The Attempt at a Solution Used the equation and plugged all the information, and solved, but for a weird reason it comes wrong, maybe I should...

Dear Members, I would like to ask if we plot the Roll data of a satellite in degrees vs. the time, and if we take the area under the curve of this roll will give something meaningful? Looking forward for your reply. Regards,

Homework Statement Hi I have a question about a satellite moving in an elliptic motion. It begins its motion on the x axis, when x=2Re, and with a velocity: Vx=0, Vy=v0, Vz=-0.5V0. Re is radius of the earth. Solving this I arrived at: r0 = 10Re/4. e=1/4. Rmin = 2Re. Rmax = 10Re/3. Given all...

As far as I understand it... Each satellite transmits a signal that the receiver receives. This signal consists of (at least) a satellite identification together with a time-stamp of when the signal was sent and its position at that time. The receiver calculates the distance from the...

Homework Statement How fast must a satellite 10,000 miles above Earth's surface travel, and how long does it take to complete one orbit of Earth? Homework Equations v^2 = g*r The Attempt at a Solution 10,000 miles + radius of Earth = 14,000mi = v^2 = (9.8)(2.253*10^7m)...

Scientists want to place a 2900.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.6 times the radius of Mars above the surface of the planet. Here is some information that will help solve this problem: mmars = 6.4191 x 10^23 kg rmars =...

Homework Statement A 1 034-kg satellite orbits the Earth at a constant altitude of 102-km. (a) How much energy must be added to the system to move the satellite into a circular orbit with altitude 191 km? (b) What is the change in the system's kinetic energy? (c) What is the change in...