1. chemistry

Write a Lewis structure of OSF4 in which the formal charges of all atoms are zero

2. PHYSICS

A spinning wheel on a fireworks display is initially rotating in a counterclockwise direction. The wheel has an angular acceleration of -3.80 rad/s2. Because of this acceleration, the angular velocity of the wheel changes from its initial value to a final

3. Algebra

Here's another problem I'm having a little trouble with: A piece of string is 40 cm long. It is cut into three pieces. The longest piece is 3 times as long as the middle-sized piece, and the shortest piece is 23 cm shorter than the longest piece. Find the

4. Calculus

What is the local linearization of e^x^2 near x=1? Is the answer 1+2x

5. english

I read this essay called "Shooting an Elephant" by George Orwell. I don't understand this question I have to answer: What examples of English ( as opposed to American) usage do you find in Orwell's essay? In Moulmein, in lower Burma, I was hated by large

6. physics

consider a pair of planets that find the distance between them is decreased by a factoer of 5. Show that the force between them becomes 25 times as strong?

7. chemistry

Draw the Lewis structure of NO2- Assign formal charges to each atom in the O3 molecule shown below. Be sure to click the +/- button below (it will turn yellow when activated) before clicking on the molecule. .. .. .. :O--O==O .. .. Based on formal charges,

8. Physics

A 215 g mass attached to a horizontal spring oscillates at a frequency of 5.50 Hz. At t=0s, the mass is at x= 6.40 cm and has vx =- 45.0 cm/s. Determine: a) The Maximum acceleration to 3 significant digits. - I calculated this to be 7.64 but it keeps

9. math Law of Syllogism and Law of Detachment

What is the difference between Law of Detachment and The Law of Syllogism ? pLEASE provide an example of both thx.

10. math

A class of 43 students took an exam. Their mean grade average is 67 and standard deviation is 7. a) how many students should get a C? b) how many should get a B? c) what score is necessary to get an A?

11. chemistry

System: Co(H2O)6^2+(aq) + 4Cl^-(aq) CoCl4^2-(aq) + 6H2O(l) Q: What would happen when you add HCl as a source of Cl- ions? Explain the observations in terms of Le Chatelier's principle. Would the answer be that the reaction shifts to the right? How would

12. physics

with earths mass 6 x 10^24 kg and radius6.38 x 10^6, how does the inverse-square law show that in space shuttle territory, 200 km above earths surface, the force of gravity is about 94% that at Earths surface

13. chemistry

what is the lewis-dot structure for SiCl2Br2?

14. physics

What is the minimum work function for a metal for visible light (wavelengths between 400 and 700 ) to eject photoelectrons?

15. Chemistry

Two people were given 1.75 g salicylic acid and 2.00 mL of acetic anhydride. If the density of acetic anhydride is 1.0820 g/mL, how many grams of aspirin could they have prepared. Is the answer 4.7 g

16. calculus

If a ball is thrown vertically upward with a velocity of 160 ft/s, then its height after t seconds is s = 160t - 16t^2 What is the velocity of the ball when it is 96 ft above the ground on its way up?

17. criminal justice

Which theory of crime do you believe best explains the prevalence of crime in the United States?

18. Physics

The earth orbits the sun once a year (3.16 multiplied by 10^7 s) in a nearly circular orbit radius 1.50 multiplied by 10^11 m. With respect to the sun, determine the following. (a) the angular speed of the earth

19. physics

if two carts, one twice as massive as the other, fly apart when a compressed spring that joins them is released. How fast does the heavier cart roll compared to the lighter cart?

20. English

1. Do you mind my opening the window? 2. He narrowly escaped being drowned.  3. He gave up smoking. 4. He admitted having stolen the money. 5. You have to avoid being hit by a bad guy. 6.  I finished writing a composition. 7.  Sam enjoyed swimming in

21. grammar

Fill up the blanks with the correct tensc of the verb in the bracket. 1.She---all the way to the hills by herself.(drive).

22. physics

a 50 kg person is standing on mercury. mercury's mass is .0553 times the earths mass and has a radius of 2439 kilometers a. what is the persons weight on saturn b. what is the persons mass on saturn how do i solve this, i don't need the answers, just an

Research and identify an organization whose organizational culture you admire or would like to be part of. Much or all of your research can be conducted online or at the University Library. In a 500- to 750-word essay, describe the following: • What

24. math

A fitness company surveyed the weights of its 90 costumers. Assume that the weights are normally distrubted with a mean of 162 lbs and a standard deviation of 3.5 lbs. If you select one of its costumers randomly, what is the probability that the costumer's

25. math

a carpenter has a piece of lumber measuring 9 feet 6 and 3/4 inches long how much the carpenter saw off to be left with a piece 7 feet 11 and 5/16 inches long?

26. English Grammar

For greetings, is it "Haven't talk to you for a while" or "Haven't talked to you for a while" past tense or not:=?

27. Algebra

Here is my problem. Please walk me through how you got to the answer. Three-fourths of a number equals 3 times the number increased by 9. Is this the correct equation? 3/4n = 3n + 9 Here's another. In this one, does "is" mean "equals"? One-fourth of a

28. English

Is it okay to write, I ate tenty-nine apples. Or, I ate 29 apples.

29. math

A fitness company surveyed the weights of its 90 costumers. Assume that the weights are normally distrubted with a mean of 162 lbs and a standard deviation of 3.5 lbs. If you select one of its costumers randomly, what is the probability that the costumer's

30. English

1. I expect to go abroad. 2. I hope to see you again. 3. I wish to go to egypt. 4. Don't you care to buy a pet? 5. He decided to reenter the burning building. 6. He chose to be a fire fighter. 7. I mean to do a business on the Internet.  8. Emily promised

31. Health - Law and Ethics - HIPAA

We are to go to the hhs.gov sire and reaserch the site for answers to questions below. Be sure to carefully read the PDF file “Summary of HIPAA Privacy Rule.” (Note that covered entity means those who are subject to the HIPAA rules—like health plans,

32. Chemistry

what is electron configuration?

33. French

If I want to say: "...but now all is well again" do I use "encore" or "de nouveau" for "again"? Mais maintenant tout est bien encore(de nouveau) Merci beaucoup!!

34. math

please help me out here the problem is combining like terms. 4x^3-3x^3+9x+2x I got 1x^3+11x but when i asked a friend they said it would be x^3+11x could u help me out please. also could you tell me if this probem is correct as well (10x^3+6x^2+4x)

35. MATH

combine like terms is this correct (5x^2+6x+8)+(6x^3 +2x^2-4x) = 6x^3+7x^2+2x+8

36. AED

this what i have so far and I need 44 more words: Instructional strategies for encouraging communitity involvement and global awareness for social studies students can be the following. In middle or high school, an annual event could be that the students

37. math

In the set of numbers 2,3,5,7,7,8,10 what is a) the arithmatic mean b) the harmonic mean c) geometric mean

38. MATH

Let f(x) = 3(x-1)^3 + 4(x-1)^2 + 2(x-1) -7 (a) Determine f'''(1) without taking any derivatives. Explain your method. (b) Determine the general Taylor polynomial of f aobut c =2 by computing any for each k, using the formula above for f(x).

39. chemistry

All gases are in soluble in water.Whether it is ture or false

40. algebra

for the equation i just gave it also says to solve it by letting y equal each side fo the equation and graphing. there is a graph off to the side. so what does all this mean?

41. science

how does the mantle material get energy to move in convection currents?

i need all the prime numbers of 1-100

43. health care

Hi I just need help with defining these meanings when it comes to healthcare. I think I am on the right path but need some assistance. (Hospitals are generally categorized as nonprofit, for-profit, or governmental.)Identify at least one example of each

44. music

what does 7:LAL mean its one of thoses things were you have to find what it means?

In "Pick Yourself" by Jerome Kern & Dorothy Fields, what is the songwriter encouraging you to do? Give 2 supporting details from song.Also, give an example on how the song could inspire me to think or act differently.

46. History

What impact did the moon landing have on the Sixties?

47. grammar

Fill up the blanks with the correct tense in the tense. 1.Tanya has ----the tennis match.(win).

48. English

14. "You really _____ go to Cairo. You can see the Pyramids and the National Museum." A. may B. might C. can D. must 17. If we _____ some more money, we could go away this weekend. A. are having B. have C. had D. would have It would be appreciate if

49. science

liquids diffuse slowly as compared to gases.Whether ture or false.

50. trig

can you please show me in steps how to find f(1+a) in this equation f(x)=-2x^2+4x+6 i know that you will plug in 1+a anywhere there is x. but after that i get confused. also can you tell me how to find the domain and range of a relation for ex. 2x+5y=10

51. Math

Find the stationary points of function E(a,b) = a^4 - 2a^2 + 2b^2 and classify each of these as either a minimum, maximum or saddle point.

52. science

wat causes an apple to fall down from a tree a pulling force towards the tree or a pulling force towards the earth

53. minorities

Just want to know few opinions to see if mine will fit on this question should law enforcement use race and ethnic specific strategies to fight gang formation and control gang crime? Appreciate the opinions

54. science

if a mack truck and a motorcycle have a head on collision which one is the impact force greater? and which one has the greatest change in its motion? This seems obvious that's why I am asking?

55. education

I have to create a schedule of school related tasks for a typical teaching day from the time you arrive at school until the time you leave school at the end of the day. for kindergarten.

56. math

Arnold is 10 yeras older than his brother richard. In 10 years richard will be 3/4as old aas arnold. how old is ecah one?

57. Computer Ecxel

Rent A Flick Insert a Date Formula Movie Category Rental Price Profit % Boca Vero Delray Miami Totals New Releases \$3.99 30% 28 17 13 52 110 Video Games \$5.00 75% 14 6 9 15 44 College Picks \$2.50 55% 10 5 5 22 42 Classic Feature Films \$1.49 65% 4 3 2 18 27

58. i need help on science

please somebody smart answer this question like Ms.Sue or anybody else. how are earthquake vibrations used to study earth's layers?

59. French

When writing a letter, is "vous" written with a capital "V"/ Merci!

60. English-Essay writing

Can someone tell me if there is a difference between the information on bibliography cards and the works cited page. I did bibliography cards already but now I'm doing my works cited from a newspaper and I thin there is a difference. Thanks

61. language arts

It's a panda planet keep them here. This is part of a poem! Please tell me if there is a coma after the word planet. Thank you so much for the help.

62. AED

this one is hard to me cause I do not know.... Even one of my co worers had a hard time too.. “how students learn science is just as important as what they learn. In the teaching of science, a major objective is to develop students’ problemsolving

63. English

Which way is "1" used in a sentence? For example, I ate 1 doughnut. Or I ate one doughnut.

64. math

which of the following is equivalent to 4.37-10negative4

65. psychology

what is history of developmental psychology?

66. science

Choose the correct answer. 1. A bad smalling gas is mixed with cooking gas.so that; (a)cooking gas burns better in presence of this gas (b)it becomes odouries after buring(C)it helps detect leakage of cooking gas(D)a preevents leakage of cooking gas.

67. algebra

how do you solve this equation: w+3.14=0.5(2w+6.38)

68. health care

What are the stages of change in the Trans-theoretical model?

Life Cycle Defininition of Stimulus and variable

70. social studies

an article that addresses diversity in the workplace.

71. Statistics

Assume that men constitute 49% of population in a country. Assume also that among men there are 5% of color-blinded. Find the proba- bility that a person chosen at random is a color-blinded man.

72. Physics

For the harmonic potential V(x,y) = x^2 + y^2 a)Find the total differential, dV. b) Show that dV is exact c) Given that -dV = Fx.dx + Fy.dy where Fx and Fy is the force in the x and y direction, respectively, write a differential equation describing the

73. human services

What would you say is the most important aspect to a human service agency?

74. math

what did the computer do at lunch?

75. math

what did the computer do at lunch?

76. Criminal Justice

What do you think of this: If most youth gangs are racially and ethnically homogeneous, should law enforcement use race and ethnic specific strategies to fight gang formation and control gang crime?

77. math

if line q has a slope of -2, what is the slope of any line perpendicular to q?

78. science

a pair of plants has the distance between them decreased by a factor of 5-how do i show that the force between them becomes 25 times as strong?