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

25,650 results, page 59

1. ### poem

Title:The dawn it comes There once was a boy named John whose never saw the dawn. When the sun went down and went to the pond. And saw what was dim. Is this a good poem? This is a limerick, lines 1,2,and 5 must rhyme.Lines 3 and 4 must rhyme. Please help if can.
2. ### PHYSICS

Consider a series of integers that are all positive and all of the numbers are taken to be less than 125. There are 43 differences between adjacent numbers in this series defined as, . Can you prove that some value of the differences (which must also be positive integers) must...
3. ### Science

a machine must be driven at 100 r/s from a belt pulley of 600 mm diameter revolving at 72 r/s . the maximum tensile force on the belt must not exceed 3000n .assume that the ratio of the tensile force is 2,5:1. A Diameter of the driven pulley. B the power in kW that can be ...
4. ### word riddle help please

to find the clue you must search the text Cause in the Late evening when dark is dim and Peaches are gray walk 1 north and then head east, till you find the pretty thing and tell me what it is! Without the text that needs to be searched, we cannot help you. As the directions ...
5. ### science

The words in the bank are air resistance,time, zero, inertia, mass, direction, friction, rolling friction, and less. See if I did them right and if I didn't write anything on the blank, I need help with it. THANKS!!!!!!!!!!!!!!!! 10. Speed can be determined if you know ...
6. ### PHYSICS

Example 2: a) A desk has a mass of 68.75 kilograms. If the coefficient of static friction between the desk and the floor is 1.1, what force must be used to move the desk from rest? b) Once the desk above is in motion, what force must be used to keep it moving at a constant ...
7. ### maths

a trust fund has rs30000 that must be invested in two diferent types of bonds.the first bond pays 5% and second 7% interest per year. using matrix multiplication determine how to divide rs 30000 among two types of bonds if the trust must obtain na annual total interest of (a)...
8. ### CHEM 1A

Balanced equation, 4KNO3(s) ----->2K2O(s) + 2N2(g) + 5O2(g) To produce 51.8kg of O2, How many moles of KNO3 must be heated? How many grams of KNO3 must be heated? Do you calculate like KNO3 and O2 is just one mole or do you divide 4/5 at the end of the equation? 51.8kgO2 x ...
9. ### Employment Law

Prepare a 1,750-to 2,050-word document in which you create a representation of actual sections of an employee handbook What legal considerations must be made as you design your employee testing policies, particularly as you consider the different specific testing that might be...
10. ### Physics

An exceptional standing jump would raise a person 0.80 m off the ground. To do this, the person must first lower himself about 0.20 m prior to jumping. What force must a 70‒kg person, ready to jump at this position, exert against the ground in order to reach that height ...
11. ### math

The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call setters can be made if repetitions are not allowed? If repetitions are allowed? I have the answers just need to know the work
12. ### English

1. Can you spare me a few minutes? 2. Can you spare a few minutes for me? 3. Can you spare a few minutes to me? (Which one is the same as #1, #2 or #3? Which one is grammatical between #2 and #3?) 4. You will may go back home. 5. You will be allowed to go back home. 6. You ...
13. ### Day Care

Children will develop a sense of self-direction and competence if materials are arrangeed so that children A. must apply ingenuity to find needed materials. b. must ask a caregiver for needed materials c. can easily find matereials themselves. d. will be restricted to using ...
14. ### English

1. The race does not take place every year because the ice must be at least 15 centimeters thick. 2. The race does not take place every year because the ice must be not less than 15 centimeters thick. 3. The race does not take place every year because the ice must not be less ...
15. ### PHYSICS

Consider a series of integers a1< a2<... < a43 < a44 that are all positive and all of the numbers are taken to be less than 125. There are 43 differences between adjacent numbers in this series defined as,di= ai+1 - ai . Can you prove that some value of the ...
16. ### physics

Careful measurements of local variations in the acceleration due to gravity can reveal the locations of oil deposits. Assume that the Earth is a uniform sphere of radius 6370 km and density 5500 kg/m3, except that there is a spherical region of radius 1.7 km and density 944 kg...

A 75% alcohol concentration mixture of water and alcohol was made by mixing 30ml of pure alcohol with 150 ml of original mixture of water and alcohol. what was the alcohol concentration of the orignal mixture The amount of water has not changed. Since the final solution is 180...
18. ### Physics

A bike is hanging from a hook in a garage. You need to consider the following forces. (a) The force of the Earth pulling down on the bike. (b) The force of the bike pulling up on the Earth. (c) The force of the hook pulling up on the bike. (d) The force of the hook pulling ...
19. ### Physics

A bike is hanging from a hook in a garage. You need to consider the following forces. (a) The force of the Earth pulling down on the bike. (b) The force of the bike pulling up on the Earth. (c) The force of the hook pulling up on the bike. (d) The force of the hook pulling ...
20. ### accounting

Mr. Jones intends to retire in 20 years at the age of 65. As yet he has not provided for retirement income, and he wants to set up a periodic savings plan to do this. If he makes equal annual payments into a savings account that pays 4 percent interest per year, how large must...
21. ### English

1. So the necklace on his desk had to be the real diamond necklace. 2. So the necklace on his desk must have been the real diamond necklace. (Does #1 mean #2? What is the difference between them?) 3. He must be strong. 4. He has to be strong. (Are both grammatical and the same...
22. ### English

1. I lost my watch. I must buy a new one. 2.I lost my watch. I must buy a new it. 3. I saw a big one. 4. He has a small one. Is #1 grammatical? What about #2? Is #2 ungrmmatical? Can we use the pattern, 'a adjective one' only?
23. ### psych

For this assignment, you will create a Microsoft® PowerPoint® presentation. Your presentation must briefly summarize how psychological disorders are classified including the role of the DSM IV. Your presentation must have at least one slide for each of the major classes of ...
24. ### psych

For this assignment, you will create a Microsoft® PowerPoint® presentation. Your presentation must briefly summarize how psychological disorders are classified including the role of the DSM IV. Your presentation must have at least one slide for each of the major classes of ...
25. ### Healthcare Management

Which of the following statements about reorganization is true? A. Organizational structure must be changed to accommodate changes in strategy. B. Managers shouldn't waste their time reevaluating organizational structure and processes. C. An organization's strategy must be ...
26. ### Physics

A team is chosen to design an orbiting space station that is shaped like a wheel 5o meters in diameter with is mass of 4*10^5 kg contained in the rim portion of the wheel. The space station will rotate at a rate such that a person working in the wheel will experience a ...
27. ### UNIVERSITY COMPOSITION AND COMMUNICATION I

write 9 sentences about financial planning. Each sentence must demonstrate a different verb tense (so, only use each tense once). For each sentence, identify the subject, the verb, and the verb tense demonstrated. In order to receive full credit, you must have included any ...
28. ### Physics

A crank .25 long turns a shaft with a diameter of 3cm around which part of a rope is wound. One end of the rope hongs free and supports a weight of 4200nt. (a) What torque does the weight exert on the shaft? (b) What torque must be excerted on the crank to keep the system in ...
29. ### Physics

An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.9 km, but when the snow clears, he discovers that he actually traveled 7.8 km at...
30. ### math

What kinds of products are manufactured to be parabolic? Name some things that can be elliptical. Parabola: satellite dish, headlights ellipse: The “whisper chamber” in the United States Capitol is an ellipse, stand at one focus and whisper, and anyone at the other focus ...
31. ### maths

Let's denote the three numbers by a1, a2, and a3. Consider the third degree polynomial: p(x) = (1 + a1 x)(1 + a2 x)(1 + a3 x) Take the logarithm: Log[p(x)] = Log(1 + a1 x) + Log(1 + a2 x) + Log(1 + a3 x) Expand in powers of x by using that: Log(1 + x) = x - x^2/2 +x^3/3 - x^4/...
32. ### Earth Science

A region of ocean water having the same temperature and salinity throughout is what??
33. ### world history

where on earth is a place that is uninhabited by humans... in other words... where can a civilization not exist???
34. ### language

is this a sentace......... A block of four different,colorful stamps that commemorate Earth day.
35. ### science

Explain why all life on earth is ultimately dependent on a continued supply of sunlight?
36. ### Earth Science

Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
37. ### Earth Science

Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
38. ### science equations

what is the acceleration of a 8.4 kg mass if a force of 64.8 n is used to move it toward earth?f=mxa
39. ### science

Can someone help me with this question please? explain how earth naturally recycles carbon dioxide.
40. ### science

What imaginary line encircling the Earth is 90 degrees from both poles at every point ?
41. ### social studies

name the five oceans of the Earth according to size, largest to smallest.
42. ### earth science

another name for the deep trenches long the edge of south america are called
43. ### earth science

The Mororovicic Discontinuity marks the change in rock density and elasticity between the:

Why does air flowing down toward the Earth create high pressure?

What is the continous movement of water between Earth's surface and the air?
46. ### Language Arts (2nd Grade)

Question: Name 10 Community Things You Can Do To Help The Earth. I Cant Think of Any!! Help
47. ### Science

Why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth

What is the mass of 4.2 kg of gold when it is transferred to a planet having twice the gravity of earth?
49. ### earth

When combining atoms, how do i use the balloons and letter notations to show the product formed?

earths diameter is approxametly 8000mi at th equator.how fast is the earth spinning?

What kind of heat transfer cause Earth's najor wind pattern?
52. ### Math

You are standing on the equator of the earth (radius 3960 miles). What is your linear and angular speed?
53. ### Science

Can you give me some information and facts about the flow of matter and energy in the earth -thank you
54. ### science

why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth
55. ### Earth Science

Two meanings for the horizontal lines on the geologic History NYS chart.
56. ### social studies

what were the lines of defence dug into the earth? and what was willsons plan for peace?
57. ### earth

if the illustration is the effect of freezing water on rock what term best decribe the process?
58. ### Language arts

What are the verbs in this phrase: Hawaii is one of the most beautiful places on earth
59. ### spanish

does anyone know the story called " What ought a man to do on earth" It is from penn foster. Can I find it on the Internet if so where
60. ### EARTH SCIENCE

Some factors that might influence solar radiation on the Martian surface
61. ### Algebra

An object weighs 10 lbs and is 200 miles from the center of the earth. Solve for the constant

What are some symbols in 'a journey to the center of the earth' by jules verne
63. ### PHYSICS

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
64. ### Physics

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
65. ### Earth Science

What are the primary heat absorbing gases in the atmosphere? What wavelength of radiation do they absorb?
66. ### physics

How would the use of dark matter affect the earth and universe? Explain possiblities
67. ### space

traveling 10,000 miles per hour how long will it take to get to jupiter from earth
68. ### Science

why is it necessary for water, carbon, nitrogen and oxygen to be recycled through the earth's ecosystem?
69. ### science

If you Weighed 360 pounds on Earth with your space suit on, what would you weigh on the moon? Why?
70. ### science

what keeps the moon traveling in the same path eah time it orbits earth
71. ### Earth Science

need to find the mystery phrase made from the following letters DNALFOSSERGORPEGA
72. ### Earth science

what is the most important reason that sediments at beaches are usually rounded and smooth
73. ### science

would a screen be useful for separating a mixture of gravel and diatomaceous-earth powder?
74. ### Science

If one object on the moon weighs 42 pounds how much would it way on earth? Why?
75. ### astronomy

what is the speed of a point on the equator in miles per hour as the earth rotates on its axis?
76. ### earth

Rocks that become hot enough to melt and flow are referred to as ___ by scientists
77. ### science

What is the magnitude of g at a height above Earth's surface where free fall acceleration equals 6.5m/s^2?
78. ### physical science

by what means can earth scientists predict discharge of a stream afeter a rainstorm?
79. ### physic

calculate the attractive force between earth and sun. Neglect the radii, D= 1.50X10
80. ### earth

How do Plate tectonics affect the Atmosphere, Hydrosphere, Geosphere, and Biosphere? Thanks SO much in advance!:D
81. ### earth science

what radioactive isotope would be most useful in dating a mastodont bone ?why?
82. ### Science

green house effect influences the temperature on Earth because try not to give a link
83. ### Earth Science

How long will it take for Potassium to have a 25% of oringinal radioactive product left?
84. ### maths

the radius of our plant earth is about 6400 km how far is it around the equator
85. ### science

The earth has a magnetic north and south. How does this help up with evidence to support the theory of Continental Drift?
86. ### physics

what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?
87. ### science

On Earth, the ratio of the force (newtons) to the mass (kilograms) of an object is always the same
88. ### physics

why one cannot find the north pole of the earth using only a simple compass
89. ### physics

what device could use th earth's magnetic felds to produce energy and how it would work?
90. ### Earth-Space Science

what factors might affect the length of the rays after an impact?
91. ### Earth Science

Develop a presentation on two ways technology has built on scientific knowledge?
92. ### wireless communications

what is the period of the space shuttle traveling at 250km above the earth and what is its velocity
93. ### Earth Science to DAmon

Give positive and negative effects of climate change in Canada..
94. ### physics

what will happen to the bone structure if earth becomes more dense than its actual density?
95. ### Chemistry help

Write a descriptive text and a word equation on how silicon is extracted from earth's crust' .
96. ### Science

If there was zero change in Earth’s eccentricity, how might that affect the possibility of an ice age?
97. ### Science

Describe the apparent motion of the stars and planets that is caused by the revolution and rotation of the earth.
98. ### science

How would life be different without resources taken for under earth's surface?
99. ### Earth science

Why are so few alternative sources of energy in use in the united states today??
100. ### earth

The radius of the sun is 695 500 km What is its approximate volume written in Scientific notation?