# Rank the crystal lattice structures in order of decreasing efficiency of space in the structure.

21,138 results, page 62
1. ## Math (Propogation)

Consider an antenna transmitting a power of 5W at 900MHz. Calculate the received power at a distance of 2km if propagation is taking place in free space.

asked by Nathan on February 9, 2011
2. ## Physical Science

a rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 381,000 km?

asked by Dana on September 15, 2013
3. ## algebra math 209

swimming space. The length of a rectangular swimmung pool is 2x-1 meters, and the width is x+2 meters. write a polynomial A(x) that represent the area. Find A(10)

asked by Anita fields on August 17, 2010
4. ## Biology - The Stomach

When referring to the lumen of the stomach is that just the opening. As in where are the HCl is and where your food enters? I googled the definition of lumen and it says inside space. I'm just not too clear on what it really means. Thanks.

asked by Lena on March 27, 2011
5. ## physical

a rocket moves through outer space at 11,000 m/s at this rate how much time would be required to travel the distance from earth to moon which is 380,000 km

asked by cindy on January 28, 2012
6. ## physics

The speed of all electromagnetic waves in empty space is 3.00 × 108 m/s. What is the wavelength of visible light emitted at 7.2 × 108 MHz? Answer in units of m

asked by megan on March 5, 2013
7. ## math

Dan fenced a rectangular piece of land measuring 15 m and 31 m. He used six strands of wire, leaving a space of 5 m for the gate. What was the total length of the wire used?

asked by kgk on October 29, 2016
8. ## art/101

Review Ch. 3 of A World of Art. Considering examples on pp. 52–54 in Ch. 3 of your text, what performance art might you imagine executing in a public space? What would be your piece’s purpose and content?

asked by stephaine on September 16, 2010
9. ## Physics

An astronaut exerts a 190-N force pushing a beam into place on the International Space Station. The beam accelerates at 0.14 m/s2 .Determine the mass

asked by Anonymous on September 13, 2016
10. ## Physical Science

A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 380,000 km?

asked by Julie on March 6, 2010
11. ## English

Hello. I wonder if English has certain rules concerning word division (I mean when there isn't enough space for a word on the line (or-ga-nize). I will appreciate it if you give a reference (if any)to this material. Thank you for all your detailed answers.

asked by Ilma on December 7, 2010
12. ## Chemistry

If a 6.00M solution of sodium hydroxide occupies 520 mL of space how many grams of NaOH is dissolved in the solution? (Remember M = moles/L). And the work.

asked by Maryanne on September 30, 2010
13. ## Astronomy

If a space probe were sent into orbit around the sun that brought it as close as 0.5 AU to the sun and as far away as 5.5 AU, what would its orbital period be? Can I use Kepler's 3rd law for this? I'm not sure how to take into account both AUs...

asked by Lindsay on March 17, 2008
14. ## ALGEBRA

Suppose it takes 3 days for a space vehicle to travel from the Earth to the moon. About how long would it take the same vehicle traveling a the same speed to reach Neptune?

15. ## Math

Pool tables are rectangular, and their length is twice the width. Find the dimensions of a pool table if it occupies 162 ft2 of floor space

asked by Tiff on September 28, 2012
16. ## physics

Two charged particles q1 and q2 were initially at rest at a seperation of 2m in a gravity free space. Then evaluate after what time seperation between them will be 8m (neglect electromagnetic losses) .

asked by arshee bhatt on February 6, 2012
17. ## One Math

The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

asked by Sandy on February 25, 2016
18. ## Science

What kind of information has the International Space Station provided us? And what have we benefited from the information? I'm doing a project and I can't find these answeres ANYWHERE!! Any answers or websites would be GREAT!! Thank you!!!

asked by Ceci on April 25, 2010
19. ## 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

asked by james on November 28, 2009
20. ## math

we have a problem that my parents cant help with. 846*2=(...+40+...)*2=(800 over ...+...over2+6 over...)=(400+...+3)...=... ...means blank space for a number. Can you help with this problem, so that I can figure out the rest of the problems.Thanks

asked by Colin on August 31, 2010
21. ## science-electromagnetism

At a particular instant in the,in a region of space where E=0 and B=3i Wbm^-1 , a 2 kg particle of charge 1 C moves with a velocity of 2ims^-1.What is the particle's acceleration due to magnetic field?

asked by justy on September 17, 2011
22. ## physics

Severed particles act on each other although separated by time and space. What is the relation between dark matter and the effect on the particles when exposed to neutron bombardment?

asked by bill zee on December 24, 2013
23. ## planning & implementing for the environment

Which of these factors is most likely to determine the total number of children you can take into your facility? A. Children's needs B.Physical space available C.program philosophy D.staff members skills B.

asked by Amanda on October 20, 2014
24. ## Science

Two point charges 6mew Coulomb and 2 new coulomb separated by distance 3cm in free space calculate work done in separating them to infinity

asked by Kajal on September 3, 2018
25. ## Chem

Define isoelectronic series. Put the K+, Ca2+, Cl-, and Ar ions and atoms in order of increasing size and explain the trends. Count the number of electrons for each atom Then, explain the (column) size trend for Mg2+ versus Ca2+ ions Is the order cl k ca

asked by Feather on November 22, 2014
26. ## Chemistry

The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which

asked by Mohamed on February 24, 2012
27. ## math

(x^3+7x+12)/(x-4) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

asked by Melanie on January 22, 2012
28. ## math

f(x)=x^3+6x^2+9x find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

asked by Melanie on January 22, 2012
29. ## math

f(x)=x/(x^2+x-2) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

asked by Melanie on January 22, 2012
30. ## Physics

A solar panel (an assemblage of solar cells) measures 58 cm x 53 cm. When facing the Sun, this panel generates 2.7 A at 14 V. Sunlight delivers an energy of 1.0×10^3 W/m^2 to an area facing it. What is the efficiency of this panel, that is, what fraction

asked by Jenny on March 22, 2010
31. ## Social Studies

Although southern Mesopotamia is a hot, desert region, why was it able to become the cradle of civilizations? A. Nomads developed aggressive herding techniques B. Flooding of the Tigris and Euphrates river brought good soil C. Farmers developed technology

asked by Lou on September 15, 2018
32. ## Chemistry

In terms of its structure and intermolecular forces, why is neoprene able to stretch? I want to say it's because its carbons form a long chain which easily stretches, but I'm not sure how intermolecular forces factor into that. Thanks!

asked by SarahF275 on December 13, 2017
33. ## Science

which term best describes the role carbon plays in the structure of compounds present in living things? A- a somewhat important role B- a fundamental role C- a minimal role I think it B.

asked by Skye on October 3, 2014
34. ## Chemistry

Give the formal change on the sulfur atom in a Lewis structure for the sulfate ion in which every atom satisfies the octet rule. 6 v.e - 4 v.e. = formal charge of +2?

asked by Anon on April 27, 2017
35. ## engineering

when i do imaging of tissue to look at collagen structure using a 2 photon microscopy, but im not familiarized with the methods to measure the diameter of the collagen and the area occupied by it. Does anyone know how do researchers measure them

asked by tech on April 9, 2011
36. ## geography

What does this mean? Thank you Colonialism is a process whereby sovereignty over the colony is claimed by the metropole and the social structure, government, and economics of the colony are changed, by colonists - people from the metropole.

asked by alainia on October 21, 2010
37. ## Precalculus

How do you setup the equation for this? Thanky ou! Find the ratio of the surface area of a cylinder to the volume of the cylinder if the height remains at 10 cm. Simplify this ratio and let f(x) = the simplified ratio. Let r be the radius of the cylinder.

asked by melinda on January 12, 2012
38. ## AP Chemistry

Rank the following in terms of increasing ox- ide acidity. 1. Na2O, CO2, NO2 2. CO2, NO2, Na2O 3. NO2, CO2, Na2O 4. CO2, Na2O, NO2

asked by Anonymous on March 4, 2014
39. ## Chem

Directions: Use the principles of atomic structure and/or chemical bonding to explain each of the following. In each part, your answer must include references to both substances. Problem: The carbon-to-carbon bond energy in c2h4 is greater than it is in

asked by Chemistry on November 19, 2007
40. ## Physics - Scientific models

a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people

asked by Farah on November 6, 2010
41. ## psychology

The physical structure of the auditory sense is responsible for transmitting messages about balance to the brain. it does this through: A) The "hammer" and " anvil" bones B) sound waves C) the part of the auditory nerve that is not involved in hearing D)

asked by loreta on October 21, 2009
42. ## chemistry

Construct the following using molecules of your choice: a) a polyester and b) a polyamide. Each drawing should have four monomers and should be original in its structure. Your polymers can not be biochemical (carbohydrate, lipid, protein, etc.). Identify

asked by Mable on May 9, 2008
43. ## Physcis - scientifc models and theories.

a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people

asked by Farah on November 1, 2010
44. ## Physcis - scientifc models and theories.

a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people

asked by Farah on November 3, 2010
45. ## polymerization of alchohol

CH2=CH-CH-OH | CH3 when the above compound undergo polymerizaing What is the polymer and the structure of the polymer obtained drawing should show three monomer unit. also include what type of polymerization involved in forming this polymer

asked by bonita on March 1, 2007
46. ## chemistry

presentation Tasks:  Ephedrine (structure see below) is a natural product that is used as a medicine in the treatment of asthma. The corresponding acid to ephedrine have pKa = 9.60 at 25 ° C.   Question:  Calculate the pH reaches 991 mg ephedrine

asked by Maria on September 9, 2016

Two parallel slits are illuminated by light composed of two wavelengths, one of which is 645 nm. On a viewing screen, the light whose wavelength is known produces its fifth dark fringe at the same place where the light whose wavelength is unknown produces

asked by Mary on November 14, 2007
48. ## physics

1. You are planning to build a mini hydro power plant. A river near your home is w = 4.0 m wide and h = 1.0 m deep. You measure the water flow to be v = 1.50 m/s over the brink of a waterfall H = 10.0 m high. The company that makes the turbine advertises e

asked by Andrew on November 12, 2011
49. ## Finance

What makes up a company's capital structure what is the purpose of determining the weighted average cost of capital for a company

asked by sasha on January 25, 2011
50. ## art history

Which of the following structure is indigenous in China? >pagodas >obelisks >mastabas or >totem poles? I think the answer is totem poles.

asked by Tabby on October 30, 2007
51. ## Biology

Do you know, by chance, how scientists discovered the make-up of DNA? Was it via a microscope and if so, what type of microscope allows you to view the structure of DNA?

asked by will on April 10, 2008
52. ## Physics

An army of armadillios is attacking Cosine Castle where the coyotes reside. If an army must clear the 45 meter walls by 5 meters, at what angle must they set their cannons (from the horizontal) in order to fire inside the castle walls? The cannons fire

asked by HELP on February 13, 2010
53. ## Chemistry

A certain substance undergoes decomposition by a first-order reaction which has equal to 30.0 minutes. If the initial concentration of the substance is 1.28 mol/liter, what will its concentration be after 2.50 hours? 1. 0.36 M 2. 0.040 M 3. -0.32 M 4.

asked by Jim on October 1, 2015
54. ## Science

When it was first classified by biologists, the elephant shrew was placed with the bicolored shrew in a cladogram. Since then, additional evidence has been found that caused scientists to remove the elephant shrew from the shrew group and place it in a new

asked by Anonymous on December 4, 2013
55. ## Science

When it was first classified by biologists, the elephant shrew was placed with the bicolored shrew in a cladogram. Since then, additional evidence has been found that caused scientists to remove the elephant shrew from the shrew group and place it in a new

asked by Anonymous on December 4, 2013
56. ## Science Question?

When it was first classified by biologists, the elephant shrew was placed with the bicolored shrew in a cladogram. Since then, additional evidence has been found that caused scientists to remove the elephant shrew from the shrew group and place it in a new

asked by Anonymous on December 4, 2013
57. ## econ

Consider a change in the table in Problem 2-3. The student’s set of opportunities is now as follows: Economics Biology 100 40 90 60 80 75 70 85 60 93 50 98 40 100 Plot this student’s production possibilities curve. Does the PPC illustrate increasing or

asked by rayne on September 14, 2011
58. ## physics

A hard rubber ball, released at chest height, falls to the pavement and bounces back to nearly the same height. When it is in contact with the pavement, the lower side of the ball is temporarily flattened. Suppose the maximum depth of the dent is on the

asked by chuikia on February 10, 2011
59. ## Chemistry

1. The decomposition of acetaldehyde is a second order reaction with a rate constant of 4.71 × 10^−8 L/mol/s. What is the instantaneous rate of decomposition of acetaldehyde in a solution with a concentration of 5.55 × 10^−4 M? 2. The rate constant

asked by Bob on April 11, 2017
60. ## math

Charlie decides he is going to have some friends over for pizza. He estimates that each friend will eat 3 pieces of pizza and knows that East Slide's large pizzas each have 8 slices. How many large pizzas does he need to order if he invites 9 friends?

asked by amy on September 11, 2013

1.which of the following sentences is accurate in terms of the words it uses? a. there is alarge amount of people at the convention. b. we have to decide between the four options available to us. c.fewer people will attend the conference this year because

asked by shirley on March 4, 2013
62. ## College Chemistry

Which of the following changes generally lead to greater reaction rates? (I)Increasing the temperature (II)Decreasing the concentration of a reactant or (III) adding a catalyst I know that change in temperature influences the reaction, in this case it

asked by James on September 14, 2010
63. ## math

A ladder , 5 meter long , standing on a horizontal floor , leans against a vertical wall . If the top of the ladder slides downwards at the rate of 10 cm/sec . Find the rate at which the angle between the floor and the ladder is decreasing when the lower

asked by lucky on June 19, 2011
64. ## College Algebra

1.Answer the following for the given quadratic function. f(x) = -2x^2 - 8x - 13 (a) does the graph of f open up or down? (b) what is the vertex (h,k) of f? (c) what is the axis of symmetry? (d) what are the intercepts? (e) how is the graph suppose to look

asked by Kameesha on August 4, 2012
65. ## writing

PLEASE PROOF READ IT WILL BE DOUBLE SPACED WHEN I SUBMIT IT. In approximately 200–350 words, using compare/contrast strategies, discuss the benefits and/or advantages of shopping online, rather than shopping in a store. The Benefits of Online Shopping

asked by AMW on November 4, 2012
66. ## Government

With regard to public opinion, the Supreme Court a. ignores it completely in order to make decisions that are based on enduring values rather than the public’s passing whims. b. remains uninformed about it because justices stay on the bench for life and

asked by Anthony on February 26, 2011
67. ## physics

1. At some automobile toll-collecting stations, a thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the purpose of this wire? 2. The leaves of a charged electroscope collapse in time. At

asked by Nicole on July 14, 2010
68. ## Math

You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to \$230,000, and Suite Dreams can borrow money at 13% ordinary

asked by Erica on June 20, 2013
69. ## Math

You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to \$230,000, and Suite Dreams can borrow money at 13% ordinary

asked by Erica on June 19, 2013
70. ## Math

You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to \$230,000, and Suite Dreams can borrow money at 13% ordinary

asked by Erica on June 20, 2013
71. ## chemistry

the abbreviated structure formula of the products of the complete hydrolysis of tocainde is required together with any new functional groups formed. I am somewhat stuck and have got only as far as identifying the functional groups in tocaine. please can

asked by layla on March 7, 2007
72. ## science- pka- chem

Please verify that the pka of pyrrole is 6.04 and the pka of imidazole is 6.95. Why are they different? Doesn't pysrrole have one more bonded H in the ring structure than imidazole? I would expect slightly more acidic behavior just on the basis of this.

asked by ERB on September 17, 2006
73. ## Chemistry

# Electron Pairs # Lone Pairs Electronic Geometry Molecular Geometry Lewis Structure Sketch of Shape I need to do the above things for SBr6 and BrCl5. If anybody can help that would be great!

asked by Jake on April 26, 2011
74. ## Science

Cellular examination of a cyanobacterium and a diatom reveals that the diatom has (which structure?) that is absent in the cyanobacterium? a. DNA b. chloroplasts c. plasma membrane d. a cell wall with peptidoglycan e. all of the above

asked by John on March 12, 2007
75. ## Biochemistry

Because ethanol is a poor substrate for LDH, shouldn't it have a lower Km than lactate? (Because Km is binding affinity) Also, how do the structure of active sites (for example, in this case lactate and ethanol) influence Km? THANK YOU SO MUCH!

asked by Student on November 20, 2016
76. ## Chemisty

How does the kinetic molecular theory help explain the difference between solids, liquids, and gases? Would the answer be basically stating how the theory states the difference of their atom structure? Or is it something else?

asked by Jack on June 27, 2015
77. ## Orgo

this is a repost because i am really stuck What is the structure of the magnesium salt that is created as a byproduct of the Grignard reaction: bromobenzene + mg = phenylmagnesium bromide phenylmagnesium bromide + benzophenone = triphenylmethanol

asked by Vik on November 16, 2009
78. ## science

Which structure is less likely to suffer damage during an earthquake: a high-rise, steel frame hotel built on sediments, or a wood frame house built on bedrock?

asked by . on November 29, 2009
79. ## chemistry

I am trying to work out the abbreviated structure formula of the products of the complete hydrolysis of tocainde together with any new functional groups formed. I am somewhat stuck and have got only as far as identifying the functional groups in tocaine.

asked by layla on March 9, 2007
80. ## mgt 435

Of the following, which is one of the most serious liabilities of the traditional, hierarchical organizational structure, as opposed to the modern, more decentralized approach? (Points : 1) Finding the most qualified CEO Responding quickly and effectively

asked by Anonymous on May 2, 2014
81. ## Physics

Suppose you were to drop a 9 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy. For how long could the resulting energy light

asked by Brittany on November 24, 2017
82. ## English

Hello. I'm very grateful for all your help and attention. I've already asked a similar question but there are so many tenses in English that sometimes it's difficult to see the difference. Please help me to choose the correct structures (maybe all of them

asked by Ilma on February 3, 2012
83. ## Computer

Describe how an operating system that uses paging could make stacks grow dynamically if the original size proves too small. What would the page table data structures look like? Explain what would happen when a thread's stack grows past the area that has

asked by Danny on June 30, 2011
84. ## computer science

Describe how an operating system that uses paging could make stacks grow dynamically if the original size proves too small. What would the page table data structures look like? Explain what would happen when a thread's stack grows past the area that has

asked by super on August 26, 2010
85. ## Chemistry

Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system:

asked by Anonymous on February 19, 2013
86. ## Math

The daily temperature is decreasing at a rate of 2 degrees Fahrenheit T represent the daily high temperature now right then expression for the high temperature in five days the current at high temperatures need to address for hi-fi high temperature in five

asked by John on October 23, 2016

A psychologist has constructed a paper and pencil test purported to measure depression. To see how the test compares with the ratings of the expert, 12 emotionally disturbed individual are given the paper and pencil test. The individuals are also

asked by Lou on April 2, 2009
88. ## chemistry

A non-metal element which lies in the third row of the Periodic Table forms a gaseous compound H2Y with hydrogen and the compound Li2Y with lithium, which has a solid crystalline structure and a high melting point (greater than 900 °C). • A non-metal

asked by joleen on January 30, 2011
89. ## Chemistry

A farmer wants to capitalize on the amount of sunlight shining on his farm everyday by building a solar power tower. The manufacturer\'s specifications state that the solar tower has 5.0 × 101 heliostats, each with an area of 2.10 m2. If the total amount

asked by Kara on May 6, 2017
90. ## SS

In what way did China's isolated geography contribute to its development as a country? Isolation allowed China to develop on its own, without too much interference from foreign invasion. Isolation caused the Chinese people to lag behind the world in

asked by Kelly on November 28, 2018
91. ## science

Linear growth a. is characterized by a rapidly growing population. b. is demonstrated by the sequence 12, 13, 14, 15, 16. c. is illustrated by the numbers 2, 4, 8, 16, 32. d. is characterized by resource use and consumption. e. is characterized by a slowly

92. ## Math

Which of the following statements describe an exponential relationship? A. the temperature is increasing at the rate of 3 degrees per hour. B. the number of bacteria is increaing at the rate of 30% per minute C. The number of cars in the parking lot is

asked by Taylor on December 3, 2009
93. ## PSY 102

I REALLY NEED HELP BADLY WITH THESE QUESTIONS SOMEONE PLS HELP..... Why do the passengers in high-altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?

asked by Miss Angie on September 23, 2013
94. ## Art

When looking at fabrics, an interior designer will focus on these characteristics. (1 point) shape and form space and color color, texture, and pattern proportion and emphasis

asked by RainbowDragon on January 14, 2013
95. ## HELP PRE-CALC ASAP

An experiment consists of selecting a number at random between 0 and 9 inclusive, and a letter of the English alphabet. What is the size of the sample space of this experiment? A) 35 B) 36 C) 52 D) 234 E) 260

asked by Anonymous on March 24, 2014
96. ## Science

The amount of space something occupies is its volume. Volume can be measured using a A. triple beam balance B. graduated cylinder C. spring scale D. meter stick I think its B.

asked by Jaycee on December 8, 2011
97. ## Debating

PLEASE HELP ME! What is a Space Program? Define. I Have a debating topic that needs me to define that. I have googled but I can't find anything. If you don't know then please show me a list of alternate search engines. Thanks Minerva

asked by Minerva Wisdom on February 27, 2009
98. ## Math

If a = 3i + 2j - k and b = -2i + j calculate each magnitude. a) a + b I got sqrt3, but the answer at the back of the book says sqrt11. 2) If D(3,4,5) and E(-2,1,5) are points in space calculate each expression and state what it represents. |OD| can you

asked by Anonymous on March 29, 2008
99. ## Need Help asap for math!

A plane is steering at S83degreesE at an air speed of 550 km/h. The wind is from N70degreesE at 85km/h. Find the ground velocity of the plane to 1 decimal space.

asked by Tina on October 24, 2014
100. ## Weight Is Force! Science

A space ship has a mass of 9000kg. The spaceship is launched from the Earth and lands on a distant planet where it has a weighted of 39000 N. What is the acceleration of gravity on this planet?

asked by Cheetah Veite on March 3, 2016