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

21,053 results, page 66
1. ## physics

It has been suggested that rotating cylinders about 9 mi long and 5.1 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration

asked by Anonymous on November 14, 2011
2. ## working with school-age children

Which of the following is one of the steps for successful inclusion? 1) Use every inch of space in designated areas. 2)Organize all children in an assigned, designated area. 3) Modify appropriate environments and curriculum. 4)Provide every program

asked by susan on November 7, 2011
3. ## physics

It has been suggested that rotating cylinders about 9 mi long and 6.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration

asked by Anonymous on June 18, 2010
4. ## Physics

What is the apparent weight of a 75 KG astronaut 4200 km from the center of the earth's moon in a space vehicle.a) moving at constant velocity, and b) accelerating toward the moon at 209 m/s? state the direction in eachcase

asked by Vim on March 3, 2010
5. ## anatomy

If the pleural space lost its negative pressure which of the following would be true? A.Inspiation would be more difficult B.Expiration would be more difficult C.Sufactant wouldnt be needed D. Exchange of oxygen and carbon dioxide would improve I think it

asked by uknown on September 28, 2008
6. ## writeteacher

i was advise not to take eng 093 just yet which is basic english and and the courses i take requires me to write papers. Please help me with learning the basics of english, like putting the commas, semi in its apprioate space. also grammar!

asked by @@@KEA on August 20, 2012
7. ## physics

It has been suggested that rotating cylinders about 12 mi long and 5.4 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall

asked by jb on November 21, 2009
8. ## writing

i was advise not to take eng 093 just yet which is basic english and and the courses i take requires me to write papers. Please help me with learning the basics of english, like putting the commas, semi in its apprioate space. also grammar!

asked by #####rena on August 22, 2012
9. ## Science

QUESTION: "Make a hypothesis about how space craft that travel through the solar system obtain the energy they need to operate." We are studying energy forms in class (Kenetic, Potential, Nuclear, etc.)... i need help NOW!

asked by Diamond on October 26, 2007
10. ## physics

Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? I know that

11. ## math

here is my problems url its typed with spaces please rewrite it with out space to see the image. and it wont need password or anything go to (zshare . net )/image/126113093ead8f03 the question is to: *find the area of the shaded region.

asked by Tareena on May 26, 2008
12. ## Physics

Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade 10^22J?

asked by Derick on September 14, 2014
13. ## physics

It has been suggested that rotating cylinders about 12 mi long and 4.1 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall

asked by monic on November 15, 2012
14. ## English (Classical Myths)

I have a myth project assigned. I got lucky (or so I thought) and had the myth of Polyphemus. Wikipedia has it if anyone doesnt know it. There are three things that I need for my project: 1) The moral of the story. 2) How the story explains natural

asked by Jake on November 28, 2007
15. ## Algebra

The yearly per capita consumption of whole milk in the United States reached a peak of 40 gallons in 1945, at the end of World War II. By 1970 consumption was only 27.4 gallons per person. It has been steadily decreasing since 1970 at a rate of about 3.9%

asked by Katie on April 10, 2017
16. ## organic chemistry

Apart from the fact that between the two structures, only cyclohexe-4-ene-cis-1,2-dicarboxylic acid has the OH group shown on the IR spectrum. In what other majors way will the IR spectrum of cyclohex-4-ene-cis-1,2-dicorboxylic anhydride differ from the IR

asked by sarah on April 25, 2016
17. ## books

We reading animal farm in english class so we have been asked to write an article about the battle of the windmill that takes place in chapter 8 and we are instructed to be biased towards of the animals. Can you please give me any points that I should

asked by Khabo on April 15, 2012
18. ## science

i need to solve this : 1. we should show the chemical structure of oligosaccharide which contains 2 galactoses and 1 saccharose. 2. compare the difference in physical features og dicarboxylic acids and glucose beta chain 3. determine the calorific value of

asked by nina on March 29, 2011
19. ## Sociology

Imagine a society in which there are no social classes- no differences in people’s wealth, income, and life chances. What would such a society be like? Would it be stable or would its social structure change over time? How could you apply Max Weber’s

asked by Monique on December 29, 2009
20. ## u.s. history

imagine you are living in the united states in the 1890's. write a letter to the president persuading him to support or oppose an imperialismt policy for the united states. be sure to use standard grammar, spelling, sentences structure, and punctuation.

asked by eric on August 24, 2008
21. ## Sociology

In America, the family of the 1950's (young, married, two children, father works while mother stays at home) is often idealized. What social factors caused that family structure to exist and why is it less common today? I can't seem to think of any

asked by mysterychicken on March 7, 2017
22. ## English

Which of the following is NOT a way in which the novel differs from the short story? A. The novel employs multiple subplots. B. The novel more fully develops characters. C. The novel has a larger number of characters. D. The novel employs a traditional

asked by Henry on September 15, 2018
23. ## soc 101

Imagine a society in which there are no social classes- no differences in people’s wealth, income, and life chances. What would such a society be like? Would it be stable or would its social structure change over time? How could you apply Max Weber’s

asked by Denise on December 16, 2009
24. ## math

Search: ralph's clothing company has an order for 20 skirts to be made from a bolt of fabric that has 28 1/4 yd of fabric. the customer wants as many flared skirts as possible, and the rest can be straight skirts. a straight skirt uses 1 1/4 yd of fabric,

asked by mi on September 3, 2010

Sensory Physiology Pick two types of sensory receptors: A. Pick two different modalities that would stimulate them B. Put these modalities in order with respect to adequate stimulus So if i was to pick, Photoreceptors and Thermoreceptors ( these would be

asked by Saira on October 30, 2008
26. ## Physical Science

Picture a ball traveling at a constant speed around the inside of a circular structure. Is the ball accelerating? Explain your answer. Please help me with this, I know that the ball is accelerating but idk why. Thanks.

asked by Christiana Danielle on May 15, 2018
27. ## English

1. They were poor because they were not educated. [Is 'educated' an adjective or a past participle? Is 'were educated' a passive tense? Or is it 'Verb + Adjective' structure?] 2. She wanted to help with their education. [What is the meaning of 'with' in

asked by rfvv on November 30, 2017
28. ## phsyical science

compare an atoms structure to a ladder. what parts of the ladder correspond to the energy levels of the atom/ identify one way a real ladder is not a good model for an atom.

asked by taylor on October 16, 2008
29. ## English

In the Narrative of the Life of Frederick Douglass what is the cumulative effect of a periodic sentence, antithesis, and balanced sentence have on the story. Also how does sentence structure help to create the effect.

asked by Ann on September 10, 2015
30. ## history again

one more question.i have to compare the class structure of japan and europe during feudalism. Europe was royals, nobility,manor lords, and serfs right? What was Japan? and am i leaving anything out of the Europe one? thank you!

asked by christina on November 19, 2008
31. ## social studies

Which of the following is not an objective of the Constitution? a. Protect the rights of the minority b. Establish the structure of the government c. Protect individual worth and dignity of all people d. Protect the rights of the majority

asked by lindsey on October 5, 2010
32. ## Math

one person takes up about 2.5 square feet of space. use this value to estimate how many people can fit in an area that is 120 feet wide and 300 feet long.

asked by Joe on August 16, 2016
33. ## physics

A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = -5.5 N/C, Ey = Ez = 0. If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz =

asked by Sam on February 22, 2017
34. ## meaning

Jacy taught dancing and demonstarted ballet postions. What does position refer to in that sentence? A] dances for ballet B] the space occupied by something C] particular stances in ballet I think it's D?

asked by Celest on March 22, 2013
35. ## math

The garage you work for as an auto mechanic measures 230 ft. by 150 ft and handles 69 cars. Using the existing garage as a model, how much space would you plan to have in your garage?

asked by justin on April 19, 2014
36. ## math

Put these rational numbers in order: 3(squared), 1 3/2, 2.2, -2 Put these rational numbers in order: 3/8, 1/4, 7/8

asked by G on February 9, 2017
37. ## Physics

A fighter plane is directly over an anti aircraft gun at a time t=0. The plane has a speed of 600km/hr. A shell is fired from an anti aircraft gun at the time t=0, in order to hit the plane. The muzzle velocity V is 1100m/s. Determine the distance the gun

asked by Gabriel on January 20, 2016
38. ## Statistics

3 students will represent your school at a conference at the state capital. A drawing will be held to select the 3 representatives from a group of 5 finalsts. If you and your friend are both finalists, what are the chances that both of your names will be

asked by Tony on March 28, 2007
39. ## Stats

3. A mail order magazine service has the exclusive subscription rights to a certain magazine. Subscriptions can be reserved for one, three, four or five years. A study of the subscriber list for other similar magazines reveals that the following

asked by Cel on March 11, 2014
40. ## accounting/ Finance

Break-even point. Please help me understand how to get the fixed and variable cost in order to determine the break-even point in units of output for the following: Output level 10 million Return on operating assets= 25% Operating asset turnover= 5 times

asked by Denim on April 20, 2009
41. ## science

Why are the Catskills not really mountains? a the catskills are lowlands b all mountains must be volcanic in origin c the horizontal rock structure shows no deformation d the catskills are a direct deposit of the last pleistocene glaicer

asked by bill on February 17, 2011
42. ## Chemistry

I am also having issues for this structure as well. [CH*subscript3*CH*subscript2*C(CH*subscript3*)CH(CH*subscript3*)CHCH*suscript2*]+ it reads from left to right like this: [CH3CH2C(CH3)CH(CH3)CHCH2]+

asked by George on September 9, 2013
43. ## Algerbra1

1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an \$80,000 loan from your family and a \$38,250 small business loan. These loans must be repaid in full within

asked by Connie on November 16, 2011
44. ## English

Can you proofread my paragraph? ---- The Nurse forces the men to conform in order to give herself a sense of superiority. The Nurse obsesses on perfection to the point that humanity is cast aside. “[S]he dreams of there in the center of those wires is a

asked by Anonymous on December 3, 2007
45. ## World History

Which distinguishing features provide evidence of Indian versus Chinese influence in different parts of Southeast Asia? Select all that apply. -- Buddhist practice*** -- government structure -- rice farming -- social hierarchy -- technological

asked by rei on November 12, 2018
46. ## Physics

Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of

asked by Jessica on December 7, 2016
47. ## Chemistry

Copper and lead had different densities. Sketch a diagram at the particular nature of matter level showing the atoms of a small cross section of copper and lead. Use this diagram to explain why lead is denser than copper. I couldn't find any pictures or

asked by Anonymous on June 29, 2015
48. ## algebra

elmer burns works for a ready-mix concrete cmpany. elmer receives an order for 3.5 cubic yards of concrete. this mixture of concrete contains sand, cement, gravel, and water, for each pound of water, there are 5 lb of sand, 2 lb of cement, and 6 lb of

asked by Anonymous on September 13, 2009
49. ## Physics

An astronaut in outer space pushes himself away from his spaceship. About how far does the astronaut go before stopping? What does the astronaut have to do to stop himself?

asked by Lala on October 28, 2011
50. ## math

Each ostrich needs a pen about 20 feet by 10 feet.How many square feet of space will be needed by 11 ostriches.

asked by dylan on September 24, 2010
51. ## Science

How were asteroids formed? Were they just formed by melted materials in space? were they formed in the asteroid belt?

asked by Sara on February 16, 2010
52. ## Science-Help

How were asteroids formed? Were they just formed by melted materials in space? were they formed in the asteroid belt?

asked by Sara on February 16, 2010
53. ## Physics

In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks

asked by Edward on March 29, 2010
54. ## Constructed Responce Help

Hi, I was told I could re-do my CR and post it for checking. There are many ways to compare and contrast the two versions of the stories “The Chicago fire”. The first version differs from the second version in many ways. Some ways is that in the first

asked by Lia on March 17, 2015
55. ## physic

I need the answer for these 2 questions: 1)How is X-ray produced and why can it be used to help us see the structure inside the body? 2)Describe the process of X-Ray computerised tomography. What information does this process provide that ordinary X-ray

asked by john on May 5, 2017
56. ## biology

humans have a double circulation system. there is a low pressure circulation and a high pressure circulation. (a) explain how the structure of the heart enables it to pump blood into two circulations at different pressures

asked by pooja on March 9, 2012
57. ## music

i have to do a project about 'west end musicals' can anyone suggest how i structure his and what i should include because I don't know what to include. shall i include a page about a popular musical and so on or not? can anyone find any useful sites which

asked by Nabiha on March 23, 2009
58. ## child development

-----------are considered critical at certain times during early growth and development and have growth-inducing influence on the brain's structure. A) Growth spurts B)Norms C)Essential experiences D)Nonessential experiences

asked by seema on December 14, 2012
59. ## Environmental Engineering

The EPA requires hazardous waste incinerators to meet a standard of 99.99% destruction and removal of hazardous constituents injected into the incinerator. Determine the allowable quantity of contaminant in the exit stream if the incinerator is burning

asked by Bruce on January 15, 2014
60. ## English Composition

I am having difficulty writing my essay with collective thoughts that aren't so jumbbled as to the: thesis statement keeping the structure; introduction, body and conclusion. This is absolutely the best site on the internet for helping organize and write

asked by Kristin on November 13, 2006
61. ## HSM/220

i need help with this one. i need to know where to start at. i am not sure where to begin detailing how a human service organization focused on providing job skills to high school dropouts would address the following: • Statement of opportunity •

asked by debbie on May 14, 2011
62. ## Social studies

What was one similarity between the bill of rights and the Magna Carta? A. Both outlined a structure that gave the government the right to tax its citizens B. Both established a detailed justice system C. Both provided guidelines for ensuring basic citizen

asked by Kailee on October 12, 2016
63. ## HSM/220

i need help with this one. i need to know where to start at. i am not sure where to begin detailing how a human service organization focused on providing job skills to high school dropouts would address the following: • Statement of opportunity •

asked by debbie on May 15, 2011
64. ## Science (URGENT)

Can someones please check my work? 1. Why does a liquid take the shape of whatever container it is in but does not expand to fill the container completely? A: It takes the shape of its contaienr because its particles can slip past each other. but it has

asked by John on May 7, 2009
65. ## Art History

A. Pyramid B.Propaganda C.Babylonians D.Cuneiform E.Gudea of Lagash F.Ziggurat G.Amorites H. Clay I.The Sumerians J.Mesopotamia 1. Ancient region of Southwest Asia between the Tigris and Euphrates rivers. 2. They invented the wheel 3. Sumerian writing

asked by dee on October 5, 2015
66. ## hca 240

I’m sending little Jimmy over for a stat spinal tap. He has had a fever for a couple of days, which increased to 102 degrees today. Since yesterday he’s been complaining of a headache and stiff neck. His mother said last week he had gone swimming in

asked by nancey on December 11, 2009
67. ## The continental drift theory

Explain how the following pieces of evidence supported the continental drift theory. a) matching continental margins b) similar animal fossils in South America and Africa c) similar rock types and structures in North America and northern Europe d) magnetic

asked by Anonymous on July 27, 2010
68. ## math

[2 marks] Fashion One Chain Store found that t weeks after the end of a sales promotion the volume of sales was given by S(t)BAekt (0t4) Where B = 50,000 and is equal to the average weekly volume of sales before the promotion. The sales

69. ## math

[2 marks] Fashion One Chain Store found that t weeks after the end of a sales promotion the volume of sales was given by S(t)BAekt (0t4) Where B = 50,000 and is equal to the average weekly volume of sales before the promotion. The sales

70. ## math

[2 marks] Fashion One Chain Store found that t weeks after the end of a sales promotion the volume of sales was given by S(t)BAekt (0t4) Where B = 50,000 and is equal to the average weekly volume of sales before the promotion. The sales

71. ## English

1. Read the following passage from "The Cabuliwallah." I took them and was going to pay him, but he caught my hand and said: "you are very kind, sir! Keep me in your recollection; do not offer me money! You have a little girl; I too have one like her in my

asked by JayStudy on May 12, 2017

The number of pencil used during a test is a type of which data? nominal qualitative ordinal qualitative discrete quantitative continuous quantitative Class rank (freshman, sophomore, etc.) is a type of which data? nominal qualitative ordinal qualitative

asked by helen on January 14, 2014
73. ## Calculus!!!

A piece of wire 28 m long is cut into two pieces. One piece is bent into a square and the other is bent into a circle. (a) How much wire should be used for the square in order to maximize the total area? (b) How much wire should be used for the square in

74. ## Honor Biology

Remember that the greater the concentration of hydrogen ions, the lower the pH of a solution. How do you suppose the pH of the solution in the thylakoid space compares with the pH of the solution in the stroma? What is responsible for the difference?

asked by Pam on December 6, 2010
75. ## Honors Biology - URGENT!!!

Remember that the greater the concentration of hydrogen ions, the lower the pH of a solution. How do you suppose the pH of the solution in the thylakoid space compares with the pH of the solution in the stroma? What is responsible for the difference?

asked by Brenda on December 8, 2010
76. ## economics

Read the Case Exercise Cost Analysis (pp. 327-328 of the Textbook) - Answer the following questions: 1. Calculate the incremental, or marginal, cost per chair to Leisure Products of accepting the order from Southeast? 2. What assumptions did you make in

asked by Anonymous on December 3, 2010
77. ## Wild Life Biology

Animal Behaviors: If instict is physically based in the brain, and behaviors result from this brain structure, what would you hypothesis happens to the brain during learning?

asked by Taylor on September 12, 2009
78. ## Science

This graph shows the changes in two populations of herbivores in a grassy field. In the y axis it says number of organisms in the x- axis it says Time In the graph A is decreasing , B is increasing, At first they were steady then slightly A decreased and B

asked by MAcy on January 3, 2012
79. ## Art

file:///C:/Users/Piccollo/Desktop/1190597-6192014-20424-PM-1750126416.jpg In this creation what important components are used to the greatest effect? A)color and space B)architectural design**** C)physics and mathematics D)innovation and creativity Am I

asked by Animesawesome on December 18, 2015
80. ## early childhood education

Which one of the following is probably not one of the reasons that circle times fail? a. The space was large and open b. The songs were repeated daily. c. The time period lasted too long. d. The teacher read a chapter book, hoping to encourage the children

asked by Xaxa on June 8, 2008
81. ## science`

When doing an experiment, it is important to follow all of the procedures EXCEPT ______________. Question 1 options: wearing protective goggles arranging and organizing the work space neatly understanding the meaning of the safety precautions using smaller

asked by sciene lab safety on August 21, 2015
82. ## Earlychilodhood education

Which one of the following is probably NOT one of the reasons that circle times fail? A. The space was large and open. B. The songs were repeated daily. C. The time period lasted too long. D. The teacher read a chapter book, hoping to encourage the

asked by Farida on January 21, 2013
83. ## Physics 1

A rotating cylinder about 5.0 miles in diameter is designed to be used as a space colony. With what tangential velocity must it rotate so that the residents on it will experience the same acceleration as that due to gravity on Earth? Recall that ag=g=-9.8

asked by Brittany on April 7, 2015
84. ## science

what happens to canyons during flood http://www.lakepowell.net/tragedy.html massive erosion; large amount of water in a small space; frequently rivers get dammed up with debris; landslides and/or mudslides can occur

asked by Jenny on October 20, 2006
85. ## Diff Calculus

Find the interval(s) where the function is increasing of decreasing. find the: a) critical value(s) b) critical point(s) c) max. value + max. point d) min.value and min. point e)point on inflection if there is: 1) y=x^4-3x^3+22x^2-24x+12 thanks:)

asked by unknown on October 2, 2011
86. ## Social Studies

Could someone tell me whether these answers are correct? Every culture has a __________ or a way of oganizing people Social Structure? In the past it was hard to move from one __________ to another. Social Class? The size of a _________ can differ from

asked by OlaZlnka on November 10, 2008
87. ## english thesis

I am not sure if my my original post, posted? lol o Age, understanding the concept of death, and the changes in family structure all depict the type of grieving a child will experience after to the death of a sibling. that is my thesis, but I want to know

asked by Dawn on December 13, 2011
88. ## Bio.

System of branching divisons that biologists use to place an organism into the appropriate taxon. What would the word be that fits that definition? Here are some possible words: binomial nomenclature classification system homologous structure kingdom

asked by Lena on December 9, 2008
89. ## chemistry

water: describe how its molecular structure is responsible for its ability to serve as a solvent for salts and other ionic or polar materials. Explain how you can be sure it isn't a straight molecule? Is it because hydrogens can come off a attach to other

asked by Anonymous on February 7, 2018
90. ## Gen chem 2

D-Glucose, C6H12O6, is an aldohexose sugar which occurs commonly in nature. In a text or reference book look up "-D-(+)-Glucose and write its correct, complete Lewis structure. Then “parcel” e’s to determine the correct (O) no. for each C atom in

asked by Elisa on July 7, 2008
91. ## Biology

Describe four ways that plants protect themselves from environmental conditions using one example from each of the following categories: a. hormone b. tropism c. plants structure d. plant process In your answer be sure to include the specific threat and

asked by Michelle on March 11, 2008
92. ## Algebra 2 Problem

You own a computer store selling two types of laser printers. The first type,A, costs \$141 and you make a \$45 profit on each one. The second type,B, costs \$110 and you make a \$35 profit on each one. You expect to sell at least 100 laser printers this month

asked by Grace on October 27, 2011
93. ## cda

Which of the following is one of the steps for successful inclusion? A. Provide every program requested. B. Modify appropriate environments and curriculum. C. Organize all children in an assigned, designated area. D. Use every inch of space in designated

asked by Kaleisha on April 5, 2015
94. ## algrbra

the volume of the shape below is placed into a bow that is 10 feet tall and the area of the base is 48ft squared feet. to the nearest tenth what is the remaining space. The figure is a sphere that has a radius of 6 ft. r=6ft I really need help figuring how

asked by hello2248 on April 7, 2016
95. ## algrbra

the volume of the shape below is placed into a bow that is 10 feet tall and the area of the base is 48ft squared feet. to the nearest tenth what is the remaining space. The figure is a sphere that has a radius of 6 ft. r=6ft I really need help figuring how

asked by hello2248 on April 10, 2016
96. ## physics

A space station in the form of a large wheel, 173 m in diameter, rotates to provide an “ar- tificial gravity” of 6 . 6 m / s 2 for people located on the outer rim. Find the rotational frequency of the wheel

asked by Anonymous on October 10, 2016
97. ## math

a farmer can afford 8000 square meters of fence and would like to come up with the best way to use this fence, such that: - he wants all the pens to be of the same rectangular shape. - he wants to give each calce of his farm as much space as possible. - he

asked by wissam on October 19, 2011
98. ## Span linear

hello everyone!i'm breaking my head and desperate how to do it... If i have a vector in linear space V:r v1,v2.....vk,a,b having A={v1,v2.....vk,a} B={v1,v2....vk,b} C={v1,v2...vk} and its known that V=sp(A) and b∉sp(C)........ needed to prove 1) a ∈

asked by Anatoly Z on January 11, 2009
99. ## geo

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

asked by Luis on May 9, 2013
100. ## physics

a body of mass 2kg starting from origin t=0,has an initial velocity of 5m/s along x-axis and it subjected to constant force of 4N in y-direction in a gravity free space.the distance from origin after 4 seconds is nearly equal to

asked by hari on September 7, 2016