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

9,298 results, page 14
1. ## physics

A bullet of mass ‘m’ traveling horizontally at a speed ‘v’ embeds itself in the centre of a block of wood of mass ‘M’, which is suspended by a light vertical string of length ‘l’. What would be the maximum inclination of the string with the
2. ## physics

An astronaut and a satellite are in an environment where no net external forces act on them. The astronaut tugs on the satellite with a force of 9.5 N in positive x-direction. What is the x-component of the force exerted by the satellite on the astronaut?
3. ## physics

What is the gravitational force on a 20Kg satellite circling the earth (Re = 6.4 x 10^6 m, Me = 6 x 10^24Kg) with a period of 5hr?

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon and Earth are aligned with the Moon between the Sun and the Earth. This
5. ## Physics

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon and Earth are aligned with the Moon between the Sun and the Earth. This

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon and Earth are aligned with the Moon between the Sun and the Earth. This

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon and Earth are aligned with the Moon between the Sun and the Earth. This
8. ## 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
9. ## physics

a satelitte is in orbit about the earth. its orbital radius 7.47x10^7. mass of satelitte 6862kg & mass of earth 5.97x10^24kg determine the orbital speed in mi/s 1mi/s=1609m/s
10. ## Math

A rectangular compound has the dimensions 6m by 10m A square carpet is laid in the centre of the compound. the carpet is 3m by 3m. Find the part of the compound that is uncovered by the carpet.
11. ## science

three point electric charges q,2q,4q are placed at the three vertices of an equilateral triangle inscribed in a circle. find the net elect ric field at the centre of the triangle. answer : I think the answer is( 9×10^9 ×q√10)/r^2 ,where r is the
12. ## mechanics

a non uniform rod ab of length 4 m and mass 5 kg is in equilibrium in horizontal position resting on two supports at point C and D wgere AC= 1 m and AD= 2 m. the magnitude of reaction at C is half of the reaction at D. Find the distance of the centre of
13. ## Math

An Equilateral Triangle Of Side 20cm Is Inscribed In A Circle.Calculate The Distance Of A Side Of The Triangle From the Centre Of The Circle.
14. ## Math

An arc of lemgth 28cm subtends an angle at the centre of a circle. In the same circle, what angle does an arc of length 35 subtend
15. ## geometry

an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of the circle.
16. ## physic

Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.
17. ## physics

Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.
18. ## Astronomy

1. What size are most exosolar planets that have been detected? A. Small like the moon B. Same size as earth C. More massive than Jupiter D. More massive than the sun 2. Which NASA space mission, launched in 2009, has the goal of determining if planets
19. ## Physics

Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit Physics - drwls, Thursday, May 5, 2011 at 8:51am
20. ## Physics

Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit Physics - drwls, Thursday, May 5, 2011 at 8:51am
21. ## physics

what is tangential velocity of the earth as it travels in its orbit around the sun?
22. ## science

What would be the effect on satellites now in orbit if the earth stopped rotating
23. ## physics

a satelitee breaks in half while in circular orbit about the earth
24. ## Physics 1

What is the rotational kinetic energy of the Earth in its orbit around the sun?
25. ## Astrophysics

If an eclipsing binary system has a period of 32 days, an orbital velocity of 153km/s, and an orbit that is nearly edge-on, what is the circumference of the orbit? The radius of the orbit? The mass of the system? I can't seem to find a starting point for
26. ## physics

from a disk of radius R,a concentric circular portion of radius r is cut out so as to leave an annular disc of mass M . the moment of inertia of this annular disc about the axis perpendicular to its plane and passing through its centre of gravity is
27. ## Physics

A. Use the relation 2 m m m GM g R ƒ­ to find the acceleration due to gravity on the surface of the Moon. You can use the following data: Mass of the Moon m M = 7.35 ¡Ñ 1022 kg. Radius of the Moon m R = 1.74 ¡Ñ 106 m. B. How does this value compare
28. ## physics

the energy received by the earth from the sun is 1400w/m2. Assuming that the sun is a black body radiator and the ratio of the radius of the earth's orbit to the sun's radius is 216. Calculate the surface temperature of the sun. Stefan constant =
29. ## physics

Determine the magnitude of the force of gravity acting on a 340 kg satellite, 850 km above Earth's surface
30. ## Physics

A satellite that is 4175 miles from the center of the earth, orbits with a period of 90 minutes. What is its centripetal acceleration?
31. ## physics

Using Kepler's constant (9.84 X 10^-14), calculate the orbital radius of an artificial satellite whose period of revolution around the Earth is 1.43 X 10^4s(3.64 h).
32. ## physics

1. At what distance above the Earth (mass of 5.97 x 1024 kg and radius of 6.38 x 106 m) would a satellite have a period of 125 min?
33. ## physics

Determine the magnitude of the force of gravity acting on a 340 kg satellite , 850 km above Earth's surface.
34. ## Maths ( permutation and combination)

a town council plans to plant 12 trees along the centre of a main road.It has 4 hibiscus trees, 6 Jacaranda trees, 2 oleander trees. How many different arrangements of these 12 trees can be made if no hibiscus tree is next to another
35. ## Science

A body weighing 150 N, moves with simple harmonic motion. The velocity and acceleration of the body when it is 200 mm from the centre of oscillation, are 5 m/s and 20 m/s2 respectively.Determine (a) amplitude of motion ,no. of vibrations per minute,
36. ## Science

An insect of mass 20g crawls from the centre to the outside edge of a rotating disc of mass 200g & radius 20cm. The disc was initially rotating at 22.0 rad/s. What will be it's final angular velocity? What is the kinetic energy in the system?
37. ## Physics-Gravity

A 17.0-kg satellite has a circular orbit with a period of 2.31 h and a radius of 9.10×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 8.10 m/s2, what is the radius of the planet?
38. ## Physics

Determine the magnitude of the force between an electric dipole with a dipole moment of 2 ✕ 10-29 C m and an electron. The electron is positioned r = 25nm from the centre of the dipole, along the dipole axis. Hint: Assume that r >> d, with d
39. ## scientist

how could measuring the orbit of a comet help scientists understand when it will next be visible on Earth?
40. ## science

How could measuring the orbit of a comet help scientists understand when it will next be visible from earth?
41. ## scientist

How could measuring the orbit of a comet help scientists understand when it will next be visible from earth
42. ## science

how could measuring the orbit of a comet help scientists understand when it will next be visible from earth
43. ## science

HOW COULD MEASURING THE ORBIT OF A COMET HELP SCIENTISTS UNDERSTAND WHEN IT WILL NEXT BE VISIBLE FROM EARTH?
44. ## science

The earth and all the planets______(or travel around) the sun. Just need to know if my answer or right or wrong. Thanks! :) orbit
45. ## space

How could measuring the orbit of a comet help scientists understand when it will next be visible from Earth?
46. ## Science

how could measuring the orbit of a comet help scientist understand when it will next be visible from earth
47. ## SCIENCE

HOW COULD MEASURING THE ORBIT OF A COMET HELP SCIENTISTS UNDERSTAND WHEN IT WILL NEXT BE VISIBLE FROM EARTH?
48. ## relative velocity

A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 159km away. The radar antenna is pointing upward at an angle of 59.3 from the ground.Fine the x and y components(in km) of the
49. ## life orientation

Draw up an action plan. 2.1 Decide what you want to do with the problem (poverty)you have to volunteer your time and services. Indicate what you wish to do. It must be practical action such as spending your time at a community centre or running a volunteer
50. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the
51. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the
52. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the
53. ## Astronomy

Please check my answers 1. What size are most exosolar planets that have been detected? A. Small like the moon B. Same size as earth C. More massive than Jupiter D. More massive than the sun 2. Which NASA space mission, launched in 2009, has the goal of
54. ## English

I left out a last sentence I need to add at the end of the school presentation. 1) Our students are also encouraged to engage in extra-curricular activities. Our school has been awarded several prices within the contest “I Giovani e le Scienze”
55. ## math

1.A child chooses a horse to ride on a carousel. The horse is located 9m from the centre of the carousel. If the ride turns through an angle of 128pie/27 determine the length of the arc travelled by the horse.
56. ## Straight Lines

From each corner of a parallelogram a perpendicular is drawn upon the diagonal which does not pass through that corner and these are produced to form another parallelogram, show that its diagonals are perpendicular to the sides of the first parallelogram
57. ## physics

Suppose a driver's car needs to travel 46.4 miles in 1.000 hour at a constant speed. If the tires of the car have a rolling radius of 28.4 cm, what will be the period of rotation of each tire? Suppose a moon of a planet in a distant solar system has an
58. ## physics

1. (a) How far below an initial straight-line path will a projectile fall in eight seconds? (b) Does your answer depend on the angle of launch or on the initial speed of the projectile? the answer is no. but defend it. 2. Why is it important that a
59. ## maths

A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
60. ## math

A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
61. ## Astronomy

Choose one answer for each question How old is the universe? 6,000 years old 380,000 years old 13.8 billion years old 13.8 million years old A parsec is: Longer than a light year The distance between the Earth and the Sun Approximately 3x10^24 cm None of
62. ## trigonometry

A sector AOB of a circle, centre O, radius r cm, where the acute angle AOB is theta radians. Given that the perimeter of the sector is 14 cm and that the area of the sector is 10 cm^2, evaluate r and theta.
63. ## math

A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
64. ## math

A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
65. ## math

A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
66. ## Physical science

A satellite that is 4175 miles from the center of the earth, orbits with a period of 90 minutes. What is its centripetal acceleration?
67. ## physical science

A satellite that is 4175 miles from the center of the earth, orbits with a period of 90 minutes. What is its centripetal acceleration?
68. ## engineering

b) The crank OA of a mechanism, as shown in the figure, rotates clockwise at 120 r.p.m. The lengths of various links are OA = 100 mm ; AB = 500 m ; AC = 100 mm and CD = 750 mm. Find by instantaneous centre method: 1. Velocity of point C. 2. Velocity of
69. ## physics

A 150-N ladder leans against a smooth wall, inclined at an angle of 60 degrees above the floor. The centre of gravity of the ladder is at point on the ladder which is one-third the length of the ladder from the bottom. How large a horizontal force must the
70. ## physics

A satellite is orbiting around a planet. its velocity is found to depend upon a.)Radius of orbit b.)mass of planet c.)universal gravitational constant(G) Using dimensional analysis find an expression relating orbital velocity to the above physical
71. ## Physics

In the hydrogen atom the radius of orbit B is sixteen times greater than the radius of orbit A. The total energy of the electron in orbit A is -0.378 eV. What is the total energy of the electron in orbit B?
72. ## 7th grade science help the solar system Ms. Sue

1. Most likely, ____ were formed when lava from the moon's interior flooded bowl-like regions on the moon's surface. (1 point) maria highlands craters basins 2. Depressions on the moon formed by large meteorites are called ____. (1 point) maria mountains
73. ## physics

Two equal sphere each weighting 1g hang by 2 equal silk thread from the same point the sphere are charged with in Contact and comes to rest with their centre 2 cm apart and 20 cm vertically below the point of support .find charge on sphere? solutions of
74. ## Math

Han Song cycled 2 1/4 Km to the playground to meet his friend. Then, he cycled 1 2/5 km to the hawker centre to have lunch. What was the total distance Han song cycled?
75. ## math

A popular tourist attraction in Ottawa is the Peace Tower which rises from the Centre Block of the Parliament Buildings. Describe at least one method that you could use to estimate the height of the tower, including the measurements you would need to make.
76. ## physics help please!!**

A typical GPS (Global Positioning System) satellite orbits at an altitude of 4.0 107 m. (Astronomical data needed for this problem can be found on the inside back cover of the text.) (a) Find the orbital period of such a satellite. hours (b) Find the
77. ## Science

How many times did earth orbit the sun between140ce and 1543, please show work
78. ## Physics

If the period of the moon were 31 days while its orbit radius 3.8x10^8m, what would the mass of the Earth be?
79. ## Earth Science

Is there a direct relationship between the eccentricity of its orbit and the distance a planet is from the sun?
80. ## Physics

Calculate the speed in m/s at which Earth revolves about the Sun. You may assume the orbit is nearly circular.
81. ## Physics

Calculate the tangential speed of the earth around the sun (assuming a circular orbit).
82. ## Motion

A body weighing 150 N, moves with simple harmonic motion. The velocity and acceleration of the body when it is 200 mm from the centre of oscillation, are 5 m/s and 20 m/s2 respectively.Determine (a) amplitude of motion ,no. of vibrations per minute,
83. ## Physics

On August 12, 2005 the Mars Reconnaissance Orbiter (MRO) was launched from Earth and reached Mars on March 10, 2006. The orbiter is in roughly circular orbit about 390 km above the martian surface. Mars has a radius of 3396 km and a mass of 0.642 x 1024 kg
84. ## Physics

On August 12, 2005 the Mars Reconnaissance Orbiter (MRO) was launched from Earth and reached Mars on March 10, 2006. The orbiter is in roughly circular orbit about 390 km above the martian surface. Mars has a radius of 3396 km and a mass of 0.642 x 1024 kg
85. ## Physic

A body weighing 150 N, moves with simple harmonic motion. The velocity and acceleration of the body when it is 200 mm from the centre of oscillation, are 5 m/s and 20 m/s2 respectively.Determine (a) amplitude of motion ,no. of vibrations per minute,
86. ## maths

Given that the equation of the hyperbola is 9x(squared)-4y(squared)=36. (i)Find the centre and vertices (ii)Find the foci and eccentricity (iii)find the equation of the asymptotes
87. ## maths

find the radius of the circle if length of arc is 4p cm and angle made by the arc at the centre is 40 deg.find the area made by the arc.
88. ## Science

What units of measurement do you use to measure the earth to... 1. Moon 2. Galaxy 3. Sun 4. Communication satellite 5. Pluto 6. Proxima Centauri
89. ## Physics

If a satellite is orbitting the earth 710km above the earths surface, and it's velocity is 7,406.8 meters/sec, what is it's cetripedal acceleration??
90. ## Motion

A body weighing 150 N, moves with simple harmonic motion. The velocity and acceleration of the body when it is 200 mm from the centre of oscillation, are 5 m/s and 20 m/s2 respectively.Determine (a) amplitude of motion ,no. of vibrations per minute,
91. ## Grade 12 Calculus

I need helping in filling in the blanks/ -the angle formed at the centre of the circle by two radii is the _______ angle. -cos delta, sin delta, tan delta are known as the ___________trigonometric ration -cos (pie/2 - x)=sinx is an example of a ________
92. ## Physics

A 56kg student runs at 5m/s, grabs a hanging rope and swings out over a lake. He releases the rope when his velocity is zero. The length of the rope is 10m, what is the angle when he releases the rope? (The person swings from the centre to the right).
93. ## Physics

A disc of radius R and thickness R÷6 has moment of inertia I about an axis passing through its centre and perpendicular to its plane . Disc is melted and recast into a solid sphere. The moment of inertia of a sphere about its diameter is
94. ## math

The locus of a point whose distance from point (0,5) is always 3/4 of its distance from the line Y=8 is an elipse. Find the equation,centre, length of the major axis, length of the minor axis and the foci of the ellipse.
95. ## Maths

A right circular cone is circumscribed about a sphere of radius a .If h is the distance from the centre of the sphere to the vertex of the cone. Show that the volume of the cone is 1/3pi a^2(a+h)^2/(h-a). Find the angle of a cone when the volume is minimum

Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such