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

25,143 results, page 7

### Physics

A CsCl (cesium chloride) salt crystal is built from the unit cells shown in the figure below. Cl− ions form the corners of a cube and a Cs+ ion is at the centre of the cube. The edge length of the cube, which is called the lattice constant, is 0.4 nm. (a) What is the ...

### physics

A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 118 km away. The radar antenna is pointing upward at an angle of 58.2 ° above the ground. Find (a) the x and (b) the y components (in km) of the position ...

### physics

A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 181 km away. The radar antenna is pointing upward at an angle of 66.2 ° above the ground. Find (a) the x and (b) the y components (in km) of the position ...

### Physics(Please help)

A satellite of mass 500kg orbits the Earth in a circular path with radius 1.0e^7 m . 1) What is the period of the satellite? I know that the equation is T= 2(pi)r^3/2 / sqrt GmE mE = 5.98e^24 does G = 6.67e^-11 ??

### PLEASE HELP FINAL PROBLEM ORBITAL

A 3300kg satellite is traveling 3550 km above the Earth's surface. Calculate the velocity and period of the satellite. THANK YOU VERY MUCH!!!!

### Physics

In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a radius of 8.50 . What is the speed of a satellite orbiting 4.70km above the surface? What is the escape speed from the asteroid?

### English

I left out these sentences. Thank you. 1) We are leaving from Alba for Genoa on 23 March at 12.30 am. We are meeting at Medford Square, just in front of the hotel called The Castle at 12.00 a.m. 2) We are scheduled to arrive in Genoa at 13.45. In the afternoon, we are going on...

### Physics

When out in space in International Space Station (ISS), Astronauts experience weightlessness. The ISS’s orbit is 354 km (that is 3.54 x 105 m) above the surface of the earth (You can get more educational NASA resources from: The distance separating the center of the earth ...

### french

Je Suis Allee A Le Centre Commercial

### math

how the distance between centre of circle if: x^2+y^2+2x-2y-11=0 and x^2+y^2-4x+6y-17=0

### maths

What is the centre of the equation 4x^2 9y^2 - 32x 36y 11

### chemistry

which orbitals have centre of symmetry

### mathematics

equation 2x-3y=10 touches the circle with centre m (-2,4)

### Physics

In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a radius of 8.50km . What is the speed of a satellite orbiting 4.70km above the surface? What is the escape speed from the asteroid?

### physics

1. The physics of Mars and its two moons. Mars has two moons, Phobos and Deimos (Fear and Panic, the companions of Mars, the god of war). Deimos has a period of 30 h, 18 min and a mean distance from the centre of Mars of 2.3 x 104 km. If the period of Phobos is 7 h, 39 min, ...

### Physics please help!!

A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.23 hours. What is density of the planet? Assume that the planet has a uniform density.

### Physics

Earth speeds along at 29.8 km/s in its orbit. Neptune's nearly circular orbit has a radius of 4.5 x 109 km, and the planet takes 164.8 years to make one trip around the Sun. Calculate the speed at which Neptune plods along in its orbit.

### Math

How do I solve the following word problem : A satellite orbits Earth in a circular path with equation x squared + y squared = 1.44 times 10 to the power of 8. With distances measured in kilometers. Another satellite orbiting in the same plane passes through the point (8000,...

### physic

A long jumper's take-off velocity is 10 m/s at an angle of 20o to the horizontal. His centre of gravity is 1 m above the ground at take-off and is 0.5 m above the ground at landing. a)How far does he displace his centre of gravity horizontally between take-off and landing? b) ...

### math

A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian co-ordinates and describe which representation may be more ...

### Physics Urgent!!

A day on Mars is 24.6 Earth hours long. A year on Mars is 687 Earth days long. How do the angular velocities of Mars’ rotation and orbit compare to the angular velocities of Earth’s rotation and orbit? w(M)/w(E)= and w(My)/w(Ey)= w is what I used to represent omega...

### physics

The gravitational field strength at 35700km above earth is .225N/kg. what is the tangental velocity of a 100000kg communication satellite? mass of earth = 5.98E24kg and radius of earth = 6.37E6m

### English

Can someone help me check the grammar in these sentences? Thank you very much in advance. 1)If I go on a short flight journey, I’d rather take a hand luggage with me. 2)If I’m going on a tropical island, I’d like to stay in a hotel next to the beach and spend all your ...

### Physics - Center of Mass

A square aluminum plate (volume mass ρ = 2700 kg/m^3) has dimension L = 4.8 m and e = 0.9 m. A cylinder of radius R = 1.5 m and at a distance d = 1.2 m from the center of the plate and at 20 deg with the horizontal, is removed from the plate. Find the centre of mass of this ...

### physics

(1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), where Re is the radius of the ...

### physics

(1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), where Re is the radius of the ...

### earth

Suppose a geologist is studying two distinct areas next to a spreading ridge. The magnetic direction of the minerals in the oldest area is opposite to the magnetic direction of minerals in the newest area. (a) Which area is closest to the centre of the ridge, the older or ...

### Dynamics

True or false (Each question carries 1 marks) (i) A rigid body is an idealization of the behavior of a body. (ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h. (iii) Constancy of areal velocity for a central force motion of a ...

### science

An earth satellite in an elliptial orbit moves with a) slower speed as it ages b) none of the above c) constant speed d) faster speed as it ages Just need to know if my answer or right or wrong. Thanks! :) b or d but im strongly going for D but i could be wrong

### science science science science science science

The moon orbits around the earth.Which of the following keeps the moon traveling in the same path each time it orbits the earth? A.energ from the surroundings B.Pull of gravity between the moon and the earth C.orbits in space are pushing the moon towards the earth D.the winds ...

### Antarctica

information and diagrams of a scientific research centre

### physics

How can we determine the centre of mass of a hollow sphere?

### Physics

Which of the following is the equation of the circle with centre (-1.5, 0.5) and radius 3? A. 2x^2 + 6x + 2y^2 - 2y - 13 = 0 B. 2x^2 - 6x + 2y^2 + 2y - 13 = 0 C. 2x^2 - 6x + 2y^2 - 2y - 13 = 0 D. 2x^2 + 6x + 2y^2 - 2y - 23 = 0 E. @x^2 + 6x + 2y^2 - 2y -14 = 0

### maths

of 2 chords the 1 which is nearer to the centre is larger.proof

### Maths

the centre of circumscribing the quadrilateral whose sides are 3x+y=22,x-3y=14 and 3x+y=62.

### Physics help

A ladder of length 2L and mass M is positioned on level ground leaning against a wall such that the angle between the ladder and the horizontal is α. The coefficient of static friction between the ladder and the wall and between the ladder and the ground is μstatic = 0.65. ...

### English

Can you check these sentences for me, please? 1)He is a superstar now and he is slamming (a synonym?) on his guitar. 2)He is responsible for the building (?) of Westminster Abbey. 3)He withdrew from Britain to defend Rome against (or from?) a Barbarian attack. 4)According to ...

### Calculus and vectors

A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian co-ordinates and describe which representation may be more ...

### Physics

If you suddenly multiplied the mass of Earth by a factor of 4, how would the period of a satellite change, if the radius of its orbit did not change? 4 times as long 1/4 as long 2 times as long 1/2 as long Unchanged

### physics

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?

### phy

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?

### Physics Homework

Consider problem U concerning the geosynchronous satellite of mass 50 kg. It orbits at a radius of 42,300 km with a speed of 3076 m/s. a) How much energy is needed to lift the satellite from the earth's surface (Re=6,370 km) up to that radius? b) How much kinetic energy does ...

### physics

There is a typo in this question. Ignore the ”cdot” in the units for G. A satellite is in a circular orbit just above the surface of the Moon. What is the satellite’s acceleration? The value of gravitational constant is 6.67259 × 10−11 Ncdotm2/kg2 and the mass of ...

### physic

In an accidental explosion, a satellite breaks in half while in circular orbit about Earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half?

### ITT

In an accidental explosion, a satellite breaks in half while in circular orbit about earth. one half is brought momentarily to rest. what is the fate of the half brought to rest? what happens to the other half?

### Physics

In an accidental explosion, a satellite breaks in half while in circular orbit about earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half?

### Physics

Use the following numbers for this question. MEarth 5.98e+24 kg MJupiter 1.9e+27 kg MSun 2e+30 kg Earth-Sun distance 150000000000 m Jupiter-Sun distance 778000000000 m rE 6380000 m rJ 69000000 m G = 6.67e-11 Nm2kg-2 the acceleration due to gravity at the surface of Jupiter has...

### As Physics

Use the equations below: P=mv Ek=1/2mv^2 4) A wooden target of mass 2.00kg is suspended from a branch so that it swings freely. The target is hit by an arrow of mass 0.10kg travelling horizontally and the arrow embeds itself in the centre of the target. The target swings ...

### Physics

A) the earth year is 365.25 days long. How long would our year be if earth followed the same orbit, but was only the mass of Mars? Answer this in earth days. B) How long would our year be if earth were the same mass, but had the orbital distance of mercury Answer this in earth...

### Foreign languages

Can you please check these sentences, Writeacher? 1) I would like to book a room with a double bed and a single bed (at a certain price) for person (sharing) which (alsoincludes breakfast and dinner for seven nights. (Can you help me express this sentence better?) 2) Prior to ...

### 12th grade physic

Q. A satelite is in a circular orbit around the earth with a period of 6.0 hours. A retrorocket thruster is fired which slows the satelite down to half its speed and places it in a new orbit. G = 6.67 x 10 power of -11 N.m2/kg2 mass of earth = 5.98 x10 power of 24 Kg radius of...

### algebra

the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE HELP ME

### physics (check my answers)

When the nuclear fuel in the sun is gone, the sun will collapse to a a. black hole b. white dwarf c. supernova d. neutron star My answer: I think its a black hole. If the mass of the Earth were suddenly doubled while the radius was unchanged, your weight would be? My answer: ...

### Physics

A semi- trailer truck (seen from back) of mass M is negotiating a right hand curve on a level highway, The constant speed of the truck is v and the radius of curvature of it's circular trajectory is R. The road exerts normal forces on the trucks tires F1, F2 and a horizontal ...

### physics

What is the net flux through the surface when charge is at the centre?

### maths

Given the equation of an ellipse as 5x^2+3y^2-15=0 find the centre and foci

### math

Find the centre of the circle that passes through the points p(-9,5), q(1,5), and r(-2,-2)

### Mathematics

Calculate the radius of a circle in which a chord of length 10 cm is 12 cm from the centre

### mathematics

find the equation of a circle with centre (2,-3)and radius 2 unit

### maths

what is the pros and cons of locating a business in City Centre

### math homework

give the coordinates of the circles centre and its radius (x-7)^2 + (y+4)^2 = 16

### math

AB is a diameter of a circle with centre at origin.what are the coordinates of B if coordinate of A are (3,-4)?

### math

AB os a diameter of a circle with centre at origin.what are the cootdinates of B if coordinate of A are(3,-5)

### physics

1.)The apparent weight of a passenger in an elevator is greater than his true weight? Why is that? 2.) The radius of larger circle is twice that of a small circle. Two identical stones are attached to cords that are being whirled on a table top at the same speed. How would the...

### geometry (help steve)

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 γis chosen uniformly at random in the interval [0,2π). The probability that a half ray drawn from the ...

### As physics

Use the equations below: P=mv Ek=1/2mv^2 4) A wooden target of mass 2.00kg is suspended from a branch so that it swings freely. The target is hit by an arrow of mass 0.10kg travelling horizontally and the arrow embeds itself in the centre of the target. The target swings ...

### college physics

A space shuttle is in a circular orbit at a height of 250km, where the acceleration of Earth’s gravity is 93% of its surface value. What is the period of its orbit?

### Science

I want to see earth in satellite image. I know about google and wikimapia, are there any other sites that have satellite images for you to see for free?

### Physics

A satellite orbits the Earth with a radius of 7000km. The acceleration of gravity at this distance=8.17m/s/s. How do I find the velocity of the satellite? I'm really struggling with finding the correct formula. I know the answer but can't figure out how to get there. Thanks if...

### Math

Completely bemused, do not know how to get the answer. a)8π b)7√2 c)27√π d)7√×7√×1 13- Determine the exact total surface area of a sphere with radius 2√2 metres. a) An inverted cone with side length 4 metres is placed on top of the ...

### Physics

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? The distribution of mass in the earth is spherically symmetric. The density of the earth is the same everywhere. The earth's interior is solid everywhere...

### Physics

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's interior is solid ...

### maths

given the following equation for a circle x^2-8x+y^2+4y+11=0 find its centre and radius

### futhermaths

A circle has its centre on the x-axis and passes through(4,1)and(1,5).find its equation.

### math

how to find circum centre of a triangle when three coordinates are given

### math

state the corrdinates of the centre of the circle described by the equation. x^2+y^2=R^2 please help!

### mathematics

What is an equation of ellipse centre at c(-1,2),focus at f(-1,5)& passes through point p(5,6).

### MATHS

Q) Find the coordinates of the centre of a circle that passes through points (7,2), (2,3), and (-4,-1)

### Physics

A charge q is placed at h distance from the base of centre . Find the flux ?

### English

I’m at the tourist centre in Boston the speakers tone can best be described as

### physics

a space shuttle is in a cic ular orbit at a height of 250 km, where the acceleration os earth,s gravity is 93 percent of its surface value. that is the period of its orbit

### Summer School Calculus

I don't know how to answer this: A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian co-ordinates and describe ...

### Math

I need to design a site plan for a wildlife centre. In order to save money, I must design the plan using the least amount of fencing possible. The plot of land is 80 m wide by 100 m long, and it must be fenced off. Each section for each animal must be fenced off. The building ...

### PHYSICS

This is the exact problem from the paper and I got an answer of 4.2 * 10^7 and I was wondering if this was the right answer. What is the height above the earth's surface at which all synchronous satellites (regardless of mass) must be placed in orbit? The period of synchronous...

### Physics HELLLPPPP

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's interior is solid ...

### science help

Which of the following sets of characteristics describe what we know about the dwarf planets? Orbits the sun, has sufficient mass to assume a nearly round shape, and lacks the gravity to clear items near its orbit. Has sufficient mass to maintain a round shape, orbits the sun...

### physics

An asteroid, whose mass is 2.0 10-4 times the mass of Earth, revolves in a circular orbit around the Sun at a distance that is 2.9 times Earth's distance from the Sun. (a) Calculate the period of revolution of the asteroid in years. (b) What is the ratio of the kinetic energy ...

### Physics

two binary stars moving in a perfect circle orbit The stars have the same mass, the distance between them is one billion km (1x10^9 km), and the time each takes for one orbit is 10.4 Earth years. Determine the mass of each star (m1=m2). (this problem DOESN'T uses the gravity ...

### Physics

A proposed interstellar space vehicle comprises an accommodation unit of mass 690 Tons at the front, separated by a light tube between the individual centres of mass, which is 43m. The amount of seperation is necessary to reduce levels (from the nuclear engine) at the ...

### Physics

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-five times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites.

### physics

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-four times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. Thank you!

### math

Write the equation of the hyperbola with centre at (3,-1),vertex)6,-1),one asymptote with equation2x-4y=9

### childhood education

In what ways does the childcare centre provides quality care to their caregivers.

### Science

what happens when we apply force below the centre of mass of a cube ? Will it tip?

### Science

In the topic of centre of gravity why is it difficult to topple a doll in a circular base.

### maths

A circle x^2 + y^ + 2x - 2y -1 = 0 expressed in the following form (x-h)^2 + (y-k)^2 = r^2 where h, k are the coordinates of the centre. How is r the radius given?

### maths

A circle x^2 + y^ + 2x - 2y -1 = 0 expressed in the following form (x-h)^2 + (y-k)^2 = r^2 where h, k are the coordinates of the centre. How is r the radius given?

### maths

Show that r = 1/4 - 3Cos¦È is polar form of an ellipse and find its centre. pls can anyone could help with this.

### math homework help

write the equation of the ellipse that has its centre at the origin with focus (0,4) and vertex at (0,7)