# Questions Asked onNovember 21, 2007

1. ## physics

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i got the answer to be 13062.5 N. i don't think that's right...

2. ## math

use 6 of the digits from 1 to 9 to make each number. use each digit only once the greatest possible number with 3 ten thousands ( I don't get this one at all)

3. ## english

what is the authors purpose in writing othello?

4. ## mgt210

promotion into supervision think about roy's personal attributes and goals and about how he might appy those abilities and reach those goals as a supervisor

5. ## Math - Solving Trig Equations

Solve each equation for 0 is less than and equal to "x" is less than and equal to 360 3sinx = 2cos^{2}x ----- I don't know how to solve this equation...this is what I have, but I don't know if I'm on the right track or not 3sinx = 1 - 2sin^{2}x 3sinx - 1 +

6. ## Physics

A 5.0-kg box at the top of a 400cm ramp slides down 200 cm. How much gravitational potential energy was lost as the box slides from the top of the ramp to the 200 cm mark of the ramp? A cheerleader is thrown vertically upward into the air. As the

7. ## chemistry

A 48.0-g sample of an element has the same number of atoms as 6.00 g Na. What is the element?

8. ## science

can you please help me put these events in order from latest to earliest?: -pangea, the supercontinent, begins to divide -trilobites -dinosaur extinction -first crocodiles -archaeopteryx (early bird) -first flowering plants -protozoa (single-celled,

9. ## Math - Solving Trig Equations

Solve each equation on the interval: 0 is less than and equal to theta is less than and equal to 360 -- 2sin2x = 1 -- --- My Answers: Let y represent 2x 2siny = 1 2siny/2 = 1/2 siny = 1/2 y = sin^-1(1/2) y = 30 2x = 30 2x/2 = 30/2 x = 15 (Quadrant 1)

10. ## Math Calculus

Hi, can anyone please help me solving these problems? any help will be greatly appreciated 1-If a tank holds 1000L of water, which takes an hour to drain from the bottom in the tank, then the volume V of water remaining in the tank after t minutes is

11. ## science - need help

a strip of silver does not react with any of the solutions tested what must be true about silver the solutions are: lead acetate zince sulfate and copper sulfate

12. ## maths pls help

1. Solve the following simultaneous equations: log2 xy = 7 log2 (x^2/y) = 5 2. If log y x =a and log z x=b where x is not equal to 1, express the following in terms of a and b: logy (yz) Solve the following simultaneous equations: y = 2 log3 x y+1 = log3

13. ## physics

An airplane is doing a vertical loop in the air. The airplane goes at a velocity of 320 and at the top of the loop, n=500N. The pilot weighs 62kg. calc the radius of the loop vertical loop, given: v=320, n at the top=510N, m=62kg i don't know what eqn i

14. ## Julius caesar

I don't understand these questions please help!! 1. A. What traits does Caesar object to in Cassius? (Act 2, Scene 2, Lines 192-214) B. Why might Caesar object to these traits? What about them seems dangerous to him?

15. ## Chemistry

what is theoxidation state of sulfur in Fe2(SO4)3?

16. ## geometry

given:m//n & g//h Prove angle 4 is congrunt to angle 16. I have no idea how to do proofs..my teacher is really bad at explaining things.

17. ## ACS

Whatis the molarity of an HCl solution if 25mL of this solution require 19.58mL of 0.1062M Sr(OH)2 solution for complete reaction? The reaction is give below Sr(OH)2 + 2HCl --> SrCl2 + 2H2O

18. ## physics

An airplane is doing a vertical loop in the air. The airplane goes at a velocity of 320 and at the top of the loop, n=500N. The pilot weighs 62kg. calc the radius of the loop vertical loop, given: v=320, n at the top=510N, m=62kg i don't know what eqn i

CoCl2+NaOH =

20. ## physics

What change in temperature occurs in order to increase the volume of 16 L of ethyl alcohol to 17 L? a)56.8*C b)1450*C c)53.5*C d) 90*C I can't seem to get one of the answers. I used the equation (change in volume)=beta(initial volume)(change of time). 1

21. ## Early Child Ed.

Would you please make sure that I have chosen the best possible answer for each question? 1. In which one of the following teaching approaches does the teacher make all the decisions regarding what,how,and when the students perform? A. Direct B. Indirect

22. ## Geometry Proofs HELP!!

how do i do this? given: m//n g//h Prove: angle 4 congruent to angle 16

23. ## physics: BOB or DRWLS follow up question

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?

24. ## English

How does an individual struggle to gain freedom against the restraints of society? How should I answer this essay question? Could you direct me on how to answer this essay question? I was thinking about how individuals rebel against society to gain

25. ## math

use 6 of the digits from 1 to 9 to make each number. use each digit only once. the least possible odd number

26. ## Algebra

Measure the height of your computer monitor to the nearest tenth of a centimeter or sixteenth of an inch. Measure the width of your monitor as well. Use the Pythagorean Theorem to find the length of the diagonal of your monitor. How do I measure it the the

27. ## SOCIAL STUDIES

I need help on social studies about ancient rome

28. ## Economics

I know the Fed uses four tools to influence/or control the money supply of the U.S. 1. Feds Fund rates 2. Open Market 3. Reserve requirements 4. Discount rate Can someone please explain what they are and how the fed uses them. I have a test waiting for me

29. ## English - Need Clarification on Two Words

What does it mean to be an individual? (This is what I think, you have you're own identity, but I need to expand more and I can't think of anything...) I'm basically asking, what does it take to be an individual? What does it mean to have freedom? (I think

30. ## French-SraJMcGin

Did I translate these two sentences correctly? (please forgive my accents)I know the words that I need, but I am not sure how's the ordering in the sentence. What days do you have your french class? = Quel jours tu as un cours de francais? I have french

31. ## science

Metals like platinum and gold are often said to be inactive. What does this mean My answer they do not react with other elements is this correct

32. ## chem

Commerical hydrochloric acid is 37% by mass HCl and has a solution density of 1.18g/mL. What minimum volume of hydrocloric acid is needed to dissolve 16g Al. The balanced equation is 2Al + 6Hcl --> 2AlCl3 + 3H2

33. ## algebra

A tennis club offers two payment options: Option1: \$35 monthly fee plus \$4/hour for court rental Option 2: No monthly fee but \$6.50/hour for court rental. Let x = hours per month of court rental time. a) Write a mathematical model representing the total

34. ## Sport - Football

In FLAG FOOTBALL, how many players are allowed on the field at one time and what are their positions' names? Please help, I'm in Australia and Football just ain't as big as it is in some other countries.

35. ## Calculus

Use the given information to find the cos (2,0), csc q = 5/3, q lies in n quadrant II How would I go about doing this

36. ## thanksgiving

The Thanksgiving Day is coming. Do you have some ideas about it? For western people, it is more important than us Asian. But this kind of custom influences us gradually. So, this Thanksgiving Day I want to send some interesting gifts to my families,

37. ## math

use 6 of the digits from 1 to 9 to make each number. use each digit only once. a) the greatest possible even number

38. ## English

Sorry I get confuse, the text is this: Chinese new year Chinese people celebrate new year in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good

39. ## science

what are the five groups of vertrbats?

40. ## Alebra

I have this math project and I'm stumped on this word problem. Any point in the right direction would be greatly appreciated.. A movie theater had a certain number of tickets to give away. Five people got the tickets. The first got one third of the

41. ## English grammar

1. Because of the terrible situation, most of the bodies remain openeyed. 2. If you believe in such a probability approaching zero and feel safe, do you think it is right? ------------------------------------- Are the sentences above grammtically correct?

42. ## social studies

U.S.A old diet-food

43. ## HUM 130

Aborigines in Australia and the Kalash Kafir . I need help finding this Why are these groups considered indigenous?

44. ## Psychology

Is there a strong connection between our mood and our senses? Has there been science esearch to support or disprove this notion?

45. ## english

Is this text correct? Chinese new year The chinese people celebrate new years eve in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good luck in

46. ## Grammar

This question has been bothering me. Is twenty five proper or twenty-five?

47. ## English/History

"The photographs which the man brought showing bridges and cities, trains, boats, big buildings, were not impressive to us...Having had no experience with the diminished scale of things in a photograph, we gained no magnitude." Does this sentence say that

48. ## NUTRITION

WHICH IS THE MOST COMMON FOOD IN USA?

49. ## science

what experiment could you perform in order to determine if iron is more active than copper? My answer: use a group of of the smae substances and test both of them in each substance separately and observe the changes in the iron nad copper

50. ## English Expressions

What is the meaning of "I am how I am."? Is it the same as "I existed of itself."?

51. ## human resources

what are the pros and cons for combination incentive plans?

52. ## arguments

should pupils have homework

53. ## skwl quiz

which county, in england, has there been an outbreak of bird flu, THIS WEEK?

When is noble-case corruption, such as the Dirty Harry problem, justifiable? Do you agree that law enforcement should use extreme means to catch criminals?

how do i do this? given: m//n g//h Prove: angle 4 congruent to angle 16

56. ## Proofs HELP

this has the same layout of my last question but the given is an angle not a line. Given:angle 2 and 3 are supplementary and angle 6and 10 are congruent. prove:m//n

57. ## math in general

what is the point of proofs?

58. ## algebra

I need help with: solving and check for extraneous solutions. sqrt y+9=1

59. ## history

i have to make a newspaper around the year 1830. Where can I go to find accurate free info about "NEWS" in that time period?

60. ## physical science

How do you calculate the heat generated from dropping a metal ball from heights?

61. ## skills for learning in an information age

why is it important to use inclusive language when communicating?

62. ## pre-algebra

What is the prime factorization of 24asquaredb?

63. ## Geometry

determine whether the side through the points (2, 3) and (11, 6) is perpendicular to the side through the points (2, 3) and (_3, 18).

64. ## english

does anyone know what the book" the fugitive" is about?

65. ## history

according to the myans, when is the world schedueled to end