# Why must the centre of the satellite orbit coincide with the centre of the Earth?

25,161 results, page 17

### French =)

Please could you check my French homework for mistakes? The first part is a presentation and the second part is my half of a role play. Also do you know of any websites that can help you with pronunciation? Hugh Heffner Mesdames et messieurs, je vous prèsente Mosieur Hugh ...

### physics

A satellite circling the earth has an average power consumption of 370.0 W. Assuming 5.4% efficiency for conversion of solar energy to electrical energy, what area is required for the solar panels?

### Physics

What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)

### science help pls pls

A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? measure the parallax and use it in calculations measure the red shift of emitted light and use it ...

### math

Based on the data collected by the National Centre for health Statistics and made available to the public in the Sample Adult database, it was found that the percentage of adults who have at some point in their life been told that they have hypertension was 15%. Suppose that a...

### math!!!

Molten plastic is injected into the centre of a circular mold of constant height, H, through a small hole. The rate of injection is such that the radius of the plastic inside the mould increases so that r(t)= 3t^2 -2t^3 where the mold has maximum radius of one unit. Compute ...

### Application prob. for Trig.

Hi, A fountain in a shopping centre has a single jet of water. The height of the jet of water varies according to a sinusoidal function. A student notes that, in exactly one minute, the jet goes from a minimum height of 2m to a maximum height of 6m and back to 2m. At 13:00, ...

### physics

a square with side length 2.0 cm has a charge of -1.0x10^-6C at every corner. What is the magnitude and direction of the electric force on each charge? What is the force on a fifth charge placed in the centre of this square? Does the sign of the fifth charge affect the ...

### sociology

how does race-conflict approach coincide with or oppose the concept of multiculturalismy

### Physics

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^-11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated.

### Physics

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^-11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated.

### Statistics

The national centre of health statistics reports that the mean systolic blood pressure for males 35-44 years of age is 128 and a standard deviation of 15. A group of 50 executives selected at random are tested and found to have an avarage of 132.3. Is there statistical ...

### Physics

if mars orbits the sun at an angular velocity of 1.06x10-7 rad/s, how long is a year on mars in earth days assuming it travels in a circular orbit?pls explain

### physics

Two people, George who has a mass of 93.0 kg and Victoria who has a mass of 60.0 kg, are on a frozen circular pond. They stand at the very centre and push off of each other. The distance from one side of the pond to the other is 83.0 m and it takes George 15.0 s to reach the ...

### Calculus

A sphere with radius 1m has temperature 15 degrees C. It lies inside a con- centric sphere with radius 2m and temperature 25 degrees C: The temperature T(r) at a distance r from the common centre of the spheres satisfi es the differential equation: d^(2)T/dr^2 + 2/r(dT/dr) = ...

### Physics

Singly charged positive ions are kept on a circular orbit in a cyclotron. The magnetic field inside the cyclotron is 0.947 T. The mass of the ions is 3.01×10-26 kg, and speed of the ions is 3.45 percent of the speed of the light. What is the diameter of the orbit? (The speed ...

### French

Can someone please check my work? Read what the following people are doing and then explain why, using "avoir" and one of the expressions in the list. faim soif chaud froid model: Alice mange une pizza. (Elle a faim.) 1. Je mets mon pull. (J'ai froid.) 2. Nous allons à la caf...

### science help pls pls pls

A new object, Object Y, was discovered outside our solar system. Object Y is small and rocky, is not a satellite of any other object, and it does not have enough gravity to clear away smaller objects near its orbit. The characteristics of Object Y most closely resemble those ...

### Reiny to Gina (logic)

I saw your reply re my late night solution to your pumpkin question http://www.jiskha.com/display.cgi?id=1224212047 I did indeed make two typing errors, which even though they do not change the actual answer, nevertheless would have caused confusion. I will repeat my solution ...

### Physics

Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite towards the first ...

### Science

I know what a baseline is, but what baseline is used in astronomy? y do we need vary the length of baselines we use? Is the baseline the diameter of the earth's orbit? I really do not get the 2nd part.

### astronomy

what is controversy of PLuto's status as a planet Here are a couple: It has a much more eccentric and tilted orbit than any of the other planets. Its orbit is tilted at an angle to the plane of the orbits of the other planets. It’s smaller than some of the planetary moons in...

### English

Here are some more sentences for you to check. Thank you. 1)The trip showed me that there is a big world outside.I decided to take (??) the trip to keep my family good company and to know them better. 2)The journey on car (by car) was very boring. 3)The trip by car was long ...

### Physics

t a NASA research center free-fall research is performed by dropping experiment packages from the top of an evacuated shaft 156 m high. Free-fall imitates the so-called microgravity environment of a satellite in orbit. What constant acceleration would be required to stop an ...

### Physics

A girl standing on a stationary uniform plank 10m long. The plank can move with negligible friction along the surface of the water. A) the girl walks along the plank with a velocity of 2ms-1 relative to the plank until she reaches the end of the plank. The centre of mass of ...

### physics iit

I need the following formulas for a (square, a ring,cylinder,hollow cylinder,a triangle,disc, rod) etc.. 1.Moment of inertia 2.Magnetic force 3.Electric force 4.Electric flux 5.Gravitational force 6.Centre of mass 7.Magnetic field intensity 8.Electric potential 9.Area 10....

### physics

A mass m1 = 6.0 kg sits on a frictionless table, and rotates at a constant speed v = 3.0 m/sin a circle of radius R = 1.5 m. m1 is attached by a massless string which passes through a hole in the centre of the table to a second m2 (which hangs freely without moving). There is ...

### maths

A rope AB attached to a small block of neglible dimensions and passes over apulley C so that its free end hangs 1.5 metres above ground. When block rests on the floor. The end A of the rope is moved horizontally in astraight line by a man walking at a uniform velocity V=...

### Math show work

If a hypothetical planet in our Solar System had a sidereal period of 11.1 Earth years and a circular orbit, how far from the Sun in Astronomical Units would it be? Enter your answer to the nearest 0.01 AU.

### Physics

Two scales support a massless plank from either end, separated by 3 m. A person, whose height is less than 3 m, lies down on the plank with their head on the leftmost scale. The leftmost scale reads 314 N, and the rightmost scale reads 112 N. (a) Calculate the person’s mass...

### Physics

A spherical satellite has 12 identical monopropellant thrust chambers for attitude control with the following performance characteristics: thrust (each unit): 5 lbf; Is (steady state or more than 2 sec): 240 sec; Is (pulsing duration 20 msec): 150 sec; Is (pulsing duration 100...

### English

I still have to include the following paragraph to my previous letter. Can you please check it? Thank you. 1) As to your accommodation, you have chosen a hotel which lies more than two miles from the school! 2) I think you should opt for one among the following hotels which ...

### precal

The Singapore Flyer, currently the world's largest Ferris wheel, completes one rotation every 37 minutes. Measuring 150m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When viewed from Marina Centre...

### Science

Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.

### Science

Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.

### science

How long dose it take the moon to rotate once and how many days dose it take to orbit the earth

### Physics

A 95,000kg spaceship, moving at 0.34 m/s, wants to dock at a 75000kg satellite that is moving towards it. If the final speed to the joined spacecraft is -0.66 m/s, find the initial speed of the satellite.

### math

the launch window for a weather satellite is represented by the inequality |t-360| < 20 where t minutes is the time from the start of the countdown to the launch. If the countdown starts at 01:00, at what times can the satellite be launched?

### English

Can you check if the following sentences are possible in English? Thank you very much in advance for your invaluable help. 1) The barons received lands (or land) from the king. 2) The land was held by the vassals. 3) In the medieval mind (?) there was also the theory of a ...

### Physics

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space ...

### Physics

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space ...

### maths

A villager Itwaari has a plot of land of the shape of a quadrilateral. The Gram Panchayat of the village decided to take over some portion of his plot from one of the corners to construct a Health Centre. Itwaari agrees to the above proposal with the condition that he should ...

### Geometry

A circle of radius 1 is drawn in the plane. Four non-overlapping circles each of radius 1, are drawn (externally) tangential to the original circle. An angle ã is chosen uniformly at random in the interval [0,2ð). The probability that a half ray drawn from the centre of the ...

### physics

Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is travelling at 51 km/h (i.e. ...

### physics

Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is travelling at 51 km/h (i.e. ...

### physics

15000N on earth 2250N on moon Moon Radius= 1.74x10^6m Orbital Height 100km Total orbit 1.84x10^6m What is orbital speed?

### Algebra

the space shuttle does one full orbit every 90 minutes and the earth is 25,000 miles around. What is the apparent speed of the space shuttle?

### Math

From two tracking stations, A and B, 450km apart, a satellite is sighted at C directly above the line joining A to B. At the moment of sighting, angle A is 39 and angle B is 45. Find the height of the satellite. Please show all your steps clearly and asap, Thanks

### physics

A 92kg astronaut and a 1.2E3kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving a speed of 0.14m/s directly away from the shuttle. Seven and a half seconds later the astronaut comes into contact with the shuttle. What was the ...

### physics

A satellite that is spinning clockwise has four low-mass solar panels sticking out as shown; the mass of the satellite is 750 kg. A tiny meteor of mass 2 kg traveling at high speed rips through one of the solar panels and continues in the same direction but at reduced speed. ...

### automobile engineering

For an automobile with wheel base 2.5m, the centre of gravity lies 0.6 m above the ground and 1.15 m in front of the rear axle. The automobile is moving on level ground with a speed of 45 km/hr. Find the minimum stopping distance when (a) Only rear wheels are braked (b) Only ...

### physics

A 62kg person lies flat on uniform plank of mass 15kg.The plank, with the person lying on it,is placed on a brick at the head and a bathroom scale at the foot,both under the plank.The persons toe to head dist is 1.56m.The length of the plank is also 1.56m. a)the reading on the...

### physics

A 62kg person lies flat on uniform plank of mass 15kg.The plank, with the person lying on it,is placed on a brick at the head and a bathroom scale at the foot,both under the plank.The persons toe to head dist is 1.56m.The length of the plank is also 1.56m. a)the reading on the...

### physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/22 of its value at the Earth's surface? _ m

### physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

### phy

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/12 of its value at the Earth's surface?

### Physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/20 of its value at the Earth's surface?

### communication

What would be the reaction of a reader if the topic sentence in an essay did not coincide with the supporting points

### history

Assess the presidency of Thomas Jefferson. Do his actions in office coincide with his political philosophy?

### english

what would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?

### history

asses the presidemcy of thomas jefferson.do his action in office coincide with his political philosophy?

### Mathematics

Since the beginning of satellite radio in 2001, the number of satellite radio subscribers has been growing very quickly. At the end of 2001, the total number of subscribers to XM Satellite radio was 27,733. By the end of 2005, the number of subscribers had grown to 5,932,957. ...

### colllege physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

### Physics

Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. The first has a mass of 4.50 multiplied by 103 kg, and the second a mass of 7.50 multiplied by 103 kg. Assume that the positive direction is directed from the second satellite ...

### math

A town planner is using a map of a town centre with a scale of 1: 1250 A new section of road will be 180 cm. How long will it be on the map? Give your answers in centimetres. how do i work this ouit? Please check your figures and the wording of your problem. The section of ...

### maths --plse help me..

A villager Itwaari has a plot of land of the shape of a quadrilateral. The Gram Panchayat of the village decided to take over some portion of his plot from one of the corners to construct a Health Centre. Itwaari agrees to the above proposal with the condition that he should ...

### maths --plse help me..

A villager Itwaari has a plot of land of the shape of a quadrilateral. The Gram Panchayat of the village decided to take over some portion of his plot from one of the corners to construct a Health Centre. Itwaari agrees to the above proposal with the condition that he should ...

### physics

As you walked on the moon, the earth’s gravity would still pull on you weakly and you would still have an earth weight. How large would that earth weight be, compared to your earth weight on the earth’s surface? (Note: The earth’s radius is 6378 km and the distance ...

### Chemistry help

The earth moves round the sun in one year.the average earth-sun distance is 1.5*10^11m given that the mass of the earth is 5.98*10^24kg (a):the angular momentum of the earth??? (b):kinetic energy of the earth motion?? (c):kinetic energu of the earth motion half way along it ...

### Physics

In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the magnitude of the earth...

### Physics

In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the magnitude of the earth...

### Physics

The HCl molecule consists of a hydrogen atom (mass 1u) and a chlorine atom (mass 35u). The centres of the two atoms are separated by 127pm (=1.27x10-10m). What is the moment of inertia, I, about an axis perpendicular to the line joining the two atoms which passes through the ...

### Physics

The HCl molecule consists of a hydrogen atom (mass 1u) and a chlorine atom (mass 35u). The centres of the two atoms are separated by 127pm (=1.27x10-10m). What is the moment of inertia, I, about an axis perpendicular to the line joining the two atoms which passes through the ...

### calculus

Ola, I'm not understanding this question, any assistance? Thank you very much. Find the distance of the line y = 2x + 6 from the circle x^2 + y^2 = 0.5 Find the point of the line that is closest to the circle. [Hint: a point on the line is closest to the circle if it is ...

### Physics....

A spacewalking astronaut with a mass of 78 kg pushes off a 540 kg satellite, exerting a 125 N force for the 0.5 seconds it takes him to straighten his arms. How far apart are the astronaut and satellite after 60 seconds?

### Astro

What is the distance in meters from the Earth's center to a point out-side the Earth where the gravitational acceleration due to the Earth is 1/20 of its value at the Earth's surface?

### Physics

I have to find the Current created by earth as it circles the sun.through the formula I=(Q/delta t). Hint:It says think of the cross section of the earths orbit.How often does a charge pass through it.

### Ap Physics

An escalator in a shopping centre carries people up through a height h at a vertical speed of v, but you’re in a hurry when you step onto it, so you climb the moving steps (each with a height of hs) at a rate of n steps/s. Determine: the amount of chemical energy converted ...

### help help help

The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists think came from a planet that once orbited the Sun but was destroyed). (a) If the center of mass of the asteroid belt is about 2 times farther from the Sun than the Earth is, how...

### physic

4. The physics class is having a tug of war – the men against the women. For a long time the two teams are pulling with equal force and the knot in the centre of the rope isn’t going anywhere. But then one boy sneezes and stops pulling as hard for just a few seconds. Of ...

### Physic

The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers where the gravitational forces on an object cancel. How far is this distance from the Earth's center?

### PHYSICS

The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers where the gravitational forces on an object cancel. How far is this distance from the Earth's center?

### aSTRONOMY

If one of your ellipss were a planet's orbit, where would the sun be on the page? his was a MiniLab to show planets orbit in the Sun in ellipses.

### Physics

Kate (m = 50 kg) is swinging on a tire tied by a (light) rope (L = 3 m) to a tree limb. Her twin Ashley comes along and squeezes into the tire with her. Assume that at all times the centre of mass of the person(s) riding the tire is at the end of the rope. a) What was the ...

### Physics

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space ...

### Physics

a) What will an object weigh on the Moon's surface if it weighs 500 N on Earth's surface? (b) How many Earth radii must this same object be from the center of Earth if it is to weigh the same as it does on the Moon? Alright, I know how to do part a. but I'm having issues on ...

### Math Gr12 Advanced Functions

I am stuck on this one part of this question: The function S(d)=93(logd)+65 relates the speed of the wind S, in miles per hours, near the centre of a tornado to the distance that the tornado travels,d,in miles. If a tornado has sustained winds of about 250 mph, estimate the ...

### Physics

Asteroid satellite: While on its way to Jupiter in 1993, the Galileo spacecraft made a flyby of asteroid Ida. Images captured (Fig. P5.66) of Ida discovered that the asteroid has a tiny moon of its own, since given the name Dactyl. Measurements found that Ida to be about 55...

### PHYSÝCS HELP

A satellite with a mass of 113 kg approaches a large planet at a speed vi,1 =10.3 km/s. The planet is moving at a speed vi,2 =14.6 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a direction opposite to its ...

### physics

A satellite with a mass of 260 kg approaches a large planet at a speed vi,1 = 13.1 km/s. The planet is moving at a speed vi,2 = 10.2 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a direction opposite to its ...

### physics

How long would our year be if our Sun were two fifths its present mass and the radius of the Earth’s orbit were six times its present value?

### Science

Do global positioning systems use elevation on Earths system to find latitude and longitude A. By using signals from a network of satellite B. By using topographic maps C. By using satellite images D. By using photography

### French

Can you make sure these are right, and some of them i just don't know XD l'écu - shield la couronne - cap Les supports - supports devises - No idea @_@ le cimier et le tortil - crest and ? le casque et les mantelets - helmet and short cape la terrasse - Clueless @_@ Thanks! ...

### etymology

how did wrigley come up the orbit. not the actually product but i need to know the orgin of the product name orbit. thanks:)

### Astronomy

Two bodies with equal masses orbit the Sun in a circular orbit. If the radii of the two orbits are the same then following is true: a) The orbital period of the two bodies is the same because their masses are the same. b) Their orbital period of the two cannot be the same ...

### physics

A spacecraft is in orbit close to the moon's surface. The centripetal acceleration is 1.6 m/s^2. If the radius of the moon is about 1.7 x 10^6 m, determine: a)the orbital speed b)the period of the orbit

### Engineering

ANPR system takes two images of each passing car. each image is 840 pixels wide and 320 pixels high. each pixel is stored in one byte. on average six car pass per minute. if each uncompressed image is sent back to the control centre for processing, what is the average rate of ...

### COM 155

What would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?

### science

I really need help with science and this is the questin reason for blank because earth is titled 23 1/2 from a line perpendicular to it's orbit,the legth of daylight varies and because of the angle at which the sun's energy strikes a given location through the year.