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

25,650 results, page 89

1. ### chemistry

how much ethyl alcohol must be added to 1.00l of water so that the solution will not freeze at -4f
2. ### chemistry

How much ethyl alcohol (C2H5OH) must be added to 1.00 L of water so that the solution will not freeze at -4°F?
3. ### personal finance

must calculate whether a couple should rent or buy a home.
4. ### physical science

How much heat must be removed from 500 g of water at 0 °C to form ice at 0 °C?
5. ### maths

how many turns must a bicycle wheel of a radius 0.5 m make to travel a distance of 100 m
6. ### physics

How much work must be done to increase the speed of an electron from 0.200c to 0.210c? In (MeV)
7. ### Physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 ìC?
8. ### chem

5 drops of AgNO3 must be added to 1 L of a water sample: 46.1 mg SO42-/L and 30.6 mg Cl -/L. What will be the precipitate that forms?
9. ### math

solve using the substitution method....(solutions must be in ordered pairs form) 9m+n=24 m-8n=27
10. ### physics

how high must a 2 kg basketball be thrown so that the top of its arc, it has a potential energy of 160J?
11. ### chemistry

how many grams of NaOH must be added to 0.250 litres of water to form a solution of PH=10.0?
12. ### social studies

true or false. because resources are plentiful, people must make choices.
13. ### en

Many students mistakenly believe that anything that appears in print must be a fact. Especially in textbooks.
14. ### Chemistry

How much hydrogen and oxygen must react to produce 65.00 grams of water? 2H + O2 -> 2H2O
15. ### math

-3v+3 _______ 6v+5 is to make sense, the values that v can take must be restricted. State the restriction on v
16. ### CHEMISTRY

how many mls of glycerol (FW= 92.1; density=1.26g/ml) must be used to make 250ml of a 0.15 M solution
17. ### chemistry

What mass of natural gas CH_4 must you burn to emit 259 kJ of heat?
18. ### physics

A rotating cylinder about 16 long and 6.2 in diameter what angular speed must it rotate?
19. ### math

find x x-5/x-2 = x-9/x-7 Method (x-5)(x-7) = (x-9)(x-2) x^2-12x+35 = x^2-11x-18 I get stuck here help would be must appreciated
20. ### social studies

outline any five skills that all effective parents must have
21. ### physics

How high must a 2.0-kg basketball be thrown so that the top of its arc, it has a potential energy of 160 J?
22. ### math

use properties of parallel lines to explain which angles in a parallelogram must be congruent???
23. ### math

use properties of parallel lines to explain which angles in a parallelogram must be congruent???
24. ### math

use properties of parallel lines to explain which angles in a parallelogram must be congruent???
25. ### phy

What mass of steam at 100°C must be added to 1.00 kg of ice at 0°C to yield liquid water at 15°C?
26. ### Math- Algebra II

9x^4/16y^6 How to I simplify it must be written in exponential form and no negative exponents. HELP
27. ### Chemistry

What mass of hydrogen peroxide must decompose to produce 0.77 grams of water(H2O)?
28. ### Physics

how fast must a roller coaster be going to get around a vertical loop with a radius of 15 m
29. ### Calculus

Let f(x) = mx-12 if x is less than -5 = x^2 +5x -7 if x is greater than or equal to -5. If f(x) is a function which is continuous everywhere, then we must have m=_______
30. ### physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.1 µC?
31. ### SCI

at room temperature, all samples of liquid water must have the same...
32. ### Physics

How much work must be done to accelerate an 8x105 kg train: a) from 10 m/s to 15 m/s; b) from 15 m/s to 20 m/s; c) to a stop an initial speed of 20 m/s?
33. ### critical thinking

calling on people to be systematic means that everyone must think the same
34. ### Chemistry

How much water must be added to 24.0 grams of salt ot make a solution that is 12.0% by mass?
35. ### Physics

To move 8.0 of charge from one electrode to the other, a 12- battery must do how much work?
36. ### physics

a spring has a force constant of 20000 N/m how far must it be strectched for its potential energy to be 43 J??
37. ### Chemistry

How many grams of KOH must be dissolved in one litre of solution to give it a pH value of 12?
38. ### physics

How far (in meters) must a 800 kg pile driver fall, if it is to do 18000 J of work?
39. ### physics

How much work in joules must be done to stop a 5000 kg car traveling at 120 km/hr?
40. ### precalculus

I have the problem 2e^x = squareroot(10e^x) +3. the solution must be in exact form only.
41. ### Literacy

Which Boolean operator limits your search so that each term input must be in the same document

43. ### science

Explain why one must the absolute temperature scale to solve gas problems
44. ### Chem 1A

Help please! How many moles of NaOH must be added to 1.0 L of 3.0 M HC2H3O2 to produce a solution buffered at each pH? 1) pH= 3.78 2) PH= 6.52
45. ### Chemistry PLZ HELP!!!!!

a. describe the frasch processfor mining sulfur. b. why must the water be superheated?
46. ### chem

The ion product Of D2O is 1.35x 10^-15 at 25 degrees C. For a solution to be acidic the PDF must be what?
47. ### physics

what force must the woman in Figure 3.38 exert on the floor with her hands in order to do a pushup?
48. ### Physics

By what distance must two charges of +2 C and +4 C be separated so that the repulsive force between them is 4.10 1010 N?
49. ### algebra

if a wall is 34 feet, how tall must a ladder be to reach the top if at a 75 degree angle
50. ### Physics

If you must stop your moving car in a hurry, should you slam on the brakes and lock them?
51. ### Chemistry

how many grams if sulfur must be dissolved into 1L of water to make a 2 molar solution?
52. ### Math

2= squared x2+y2+z2+36 then square rooted and then the number must be rational. I need x y and z. I already used 10 8 and 5
53. ### Math

2= squared x2+y2+z2+36 then square rooted and then the number must be rational. I need x y and z. I already used 10 8 and 5
54. ### math

what must be added to each of the following expressions to make it a whole square (i) 4x^2 - 12x + 7 (ii) 4x^2 - 20x + 20
55. ### math

Let s be the sum of ten consecutive integers and let p be their product. Explain why the units digit of P-S must be 5.
56. ### math

in a division sum dividing by 8 ,any remainder must be(a) more than 8,(b) half of 8,(c)less than 8,(d)equal to 8
57. ### Science

How much heat must be removed from 500 grams of water at 0°C to form ice at 0°C?
58. ### English

you are a speaker in a school debate on the topic "Boys must not help in the kitchen" stand for the motion
59. ### aberdeen

To avoid plagiarism in your written research paper, you must provide a citation for which of the following?
60. ### science

How much heat must a gram of water at 15°C lose to turn into ice at 0°C?
61. ### Math

A rectangle area spans . The length must be 20ft more than the width. What are the dimensions?
62. ### physics

What must be the magnitude of the force of static friction between the surface and the bottom of the crate?
63. ### physics

A spring has a force constant of 70000 N/m. How far must it be stretched for its potential energy to be 21 J?
64. ### Chemistry

how much heat must be lost by 375 g of water for it to change from a liquid to a solid?
65. ### lindy

how many different flags can be made? if there are 5 colors,but the flag must have 3 bands of color
66. ### Chemistry

2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required ? I am not sure weather " 2.00 L " is my V1 or V2 .
67. ### Algebra

Suppose f(x) is some polynomial such that x−45 is a factor of f(x) . What value of x must be a root of f(x)=0 ?
68. ### PHI103:

You should read this book. Everybody likes it so it must be good" may commit which fallacy?
69. ### presential esential

Explain why academic and professional research must use credible sources.
70. ### American National government

According to the trustee model of representation, members of Congress must do what
71. ### chemistry

How many liters of 0.50M NaOH must be added to 125 mL of 0.75M HCL to neutralize it
72. ### PHYSICS

How much heat must be added to 1.0 kg of iron to raise its temperature from 20°C to 95°C? (ciron = 0.11 cal/g•°C)
73. ### physics

(a) How many kilograms of water must evaporate from a 60.0 kg woman to lower her body temperature by 0.750°C?
74. ### bio 11

must the steps in the scientific method always be followed in the same order? Explain.
75. ### MATH

The quadratic equation x2 + mx + q = 0, where m and q are real numbers, has the complex root a + bi. Which of the following must be equal to m?
76. ### Math

A patient must exercise a MET level of 8. What grade is needed if the speed is 3 mph?
77. ### History

In order to rule as an absolute monarch, what 2 things must the King or Queen comtrol?
78. ### Physical Science 9

what sequence of process must happen for an atom of carbon to go from a man to a car?
79. ### Calculus

What are two conditions that must be met before the Extreme Value Theorem may be applied?
80. ### Office Finances

What must a depositor add to check before the bank will accept it for deposit?
81. ### Math

In Magic Diamond use numbers 1-12. Each row must equal the same sum. # # # # # # # # # # # #
82. ### Chem

How much methane, in grams, must be burned to release 542 kJ of heat? H=-802kJ
83. ### chemistry

what mass of water must react with calcium carbide for 3.9g of acetylene gas to form?
84. ### physics

what must be the mass of the log to be lifted up by the hand, if the muscle cross sectional area is 17 cm^2?
85. ### math

8. When constructing a perpendicular bisector, why must the compass opening be greater 1/2 than the length of the segment?
86. ### Chemistry

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?
87. ### Biology

List all the structures that every cell, regardless of type, must have.
88. ### physics

What force F must be applied to the small piston to maintain the load of 49 kN at a constant elevation?
89. ### physics

How high must your roof be to fire 1.2km if it fires at 450 m/s muzzle velocity?
90. ### chemistry

how much NaNO3 must be added to saturate 100.0 grams of water at 20 degrees
91. ### Chemistry

In the copper-silver cell, why must the Cu2+ and Ag+ solutions be kept in separate in containers?
92. ### psychology

According to the APA, the ethics of informed consent requires that research participants must:
93. ### cms

how much water we will add in 300 lliter of a solution then its concentration must be changed from 25% to 20%
94. ### geometry

When constructing a congruent line segment to cd , the ray needed for the construction must be shorter than
95. ### Grammar

What is the direct object of the sentence? Gardeners must thank worms and bees for beautiful flowers.
96. ### Biology

What must a cell membrane have imbedded in it to allow facilitated diffusion to happen
97. ### geometry and spatial sense

If a quadrilateral has exactly one pair of sides parallel it must be a
98. ### SS

in order to be a governor of georgia, a person must have been a U.S. citizen for at least how many years?
99. ### Algebra

In how many ways can 8 new teachers be assigned to 14 classes at a school, if each must be in a different class?
100. ### english first additional language

why tradional healers must not be allowed in hospitals and clinics ?