1. physics

Hey can someone help with this. A movie stuntwoman drops from a helicopter that is 30.0 m above the ground and moving with a constant velocity whose components are 10.0 m/s upward and 15.0 m/s horizontal and toward the south. You can ignore air resistance.

2. Physics

a) A cannonball is fired horizontally from the top of a cliff. The cannon is at height H = 100 m above ground level, and the ball is fired with initial horizontal speed v_0. Assume acceleration due to gravity to be g = 9.80 m/s^2. Assume that the cannon is

3. Intro to FInance

If Mr. Hobbit deposits \$2,000 at the end of each year for the next 10 yrs at the intrest rate of 12% per year, how much will have accumulated? How much will he have accumulated if he deposited the amounts at the beginning of each year?

4. social studies

what is the vegetation in europe ? are there forest,deserts,jungles,etc

5. Uniform Motion

It is common to see birds of prey rising upward on thermals. The paths they take may be spiral-like. You can model the spiral motion as uniform circular motion combined with a constant upward velocity. Assume a bird completes a circle of radius 8.00m every

6. history

list three advances in technology and learning made by peoples of the ancient Middle East and tell why each one was important.

7. claire

One more please Como celebrate tu ultimo cumpleanos? ( fiesta? con quien? que hicieron Uds?) does this translate to what was the best birhtday ( a party with who and what did you do) is this correct Yo ultimo cumpleanos a grande fiesta con muchos mis

Dear Sir, I have question related to Acids and Alkalis is that;- You are given a colourless solution.Describe three tests you would carry out to determine the solution is an acid or an alkali without tasting or using indicators. Please reply me quikly

9. physics

Multiple part question….. A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. The cliff is 50.0m above a flat, horizontal beach. With what angle of impact does the stone land (in degrees). A

10. Intro to Programming

I have no clue what i am doing - any and all help would be appreciated - thanks! Finding an Input Giving a Desired Output PROBLEM BACKGROUND In many control problems, the output response of a system to an input is a non-linear function, that function

11. statistics

Explain the calculations for a hypothesis test and discuss how you would test for signifiance at the 0.05 level

12. stats

Time taken in mins for student to walk to school. 1-5 mins (4 students) 6-10 mins (7 students) 11-15 mins (10 students) 16-20 mins (20 students) 21-25 mins (6 students) 26-30 mins (3 students) 1)Estimate the probability that a student selected at random

13. MicroEconomics

One of the early economic laws was called Says Law that stated that supply creates its own demand. Using the circular flow chart, explain what this means and how an expanding population results in economic growth.

14. accounting

I am having a hard time finding this. Can anyone help me please? Give an example of the kinds of decisions where incremental analysis would be used in each center. Revenue, profit, cost and investment.

15. Project Management

How can a project manager be sure that he or she has chosen the correct metrics to assess project performance?

16. Uniform Motion

It is common to see birds of prey rising upward on thermals. The paths they take may be spiral-like. You can model the spiral motion as uniform circular motion combined with a constant upward velocity. Assume a bird completes a circle of radius 8.00m every

17. accounting

Why do each responsibility centers have their own budget?

18. chemistry

how do i draw a particle model to describe the reaction between sulphur and iron in detail?

19. chemistry

what is the 'big idea of energy'???!

20. statistics

two parents who are carriers of TSD have 12 children, what is that no child have TSD, 1 child have TSD and 2 child have TSD

21. Environmental Science

Explain the four factors that produce changes in population size. Which factors are affecting the population size in the video?

22. Chemistry

A gaseous mixture of and contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 505mmHG ? I am getting .41 * (505/750)= .27 .27 is my answer, is this right.

23. arithmetic

Well I am really bad at math mostly multiplication and division.When I start to think that i am getting math my teacher teachs something new what do i do.

24. Spanish

Hello, for the three omens for fortelling Alonso's death I have so far Act 2 P. 113 line 75 Where Alonso says" Tello, a love that's true ignores, the greatest danger. It is my fate that I should have a rival. Is that good, i couldn't find anymore in act

25. science/math

I have to make this density graph on a standard sheet of graph paper of this area outside. Each side of the area is a meter (in real life). What would be an good scale to use for my graph on graph paper?

26. com grap...help!!!!!!!!``

Okay look: 00-01-\$7586 01-02-\$8022 02-03-\$8502 03-04-\$9249 04-05-\$9877 Jason started college during the 2001-2002 year and graduated during the 04-05 year. How much did Jason's education cost? How do you do it????

28. history

WHAT ROLE DID GEOGRAPHY PLAY IN THE DEVELOPMENT OF EARLY CIVILIZATIONS?

29. physics

when an object is dropped frome a hight of 20m above the surface of planet Z, it will fall 5m during the 2nd second of fall. What is the acceleration of a falling object near the surface of this planet?

30. history

describe how a historian would use evidence to reconstruct an event that happened 2,000 years ago

31. physics

Explain how the pitch of the roaring sound relates to the length of the tube.

32. physics

A seashell is basically an open-closed tube rolled up. Explain why you hear a roaring sound (the sound of the sea) when you place a seashell (or any other kind of tube) up to your ear.

33. com150

Read the following sentences, and focus on the grammar area specified in the left column. Then, complete Appendix H by selecting the correct sentence (a or b) for each number and providing an explanation of why you made that choice.

34. psy

I need help to find some data that will help me define the best way to practice self-forgetfulness and humility.

35. Chemistry

If 560.70 g of water (22degrees) is displaced, what volume of gas displaced it? Any help would be greatly appreciated. I am thinking about using PV=NRT, but do I assume the value of the pressure is 1. Also using 560.7 do i determine the amount of moles?

36. chemistry

A 2.34L container of H2(g)at 752mmHg and 24 degrees is connected to a 3.17L container of He(g) at 717mmHg and 24 degrees. After mixing, what is the total gas pressure, in millimeters of mercury, with the temperature remaining at 24 degrees?

37. chemistry

Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles)of He(g) is present in a helium-oxygen mixture having a density of 0.538g/L at 25celsius and 721mmHg ?

38. math

rose counted her money and found that her 25 coins which were nickels, dimes, and quarters were worth \$3.20. The number of dimes exceeded the number of nickels by 4. How many coins of each kind did she have? I know that the expression for nickles would be

39. Describe other measurements sociologists use to ca

Describe other measurements sociologists use to calculate prejudice

40. English

Who re-wrote the diary of Anne Frank and where can I get a website that has an ebook for it?

41. math

the smallest integer is zero. is it ture or false. give reason.

42. chemistry

A 43 kg person drinks 490 g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in

43. math

i have 40 coins all dimes, nickels, and quarter, worth \$4.05. I have 7 more nickels than dimes. How many quarters do I have?

44. cultural diversity

other than the iat what measuments do sociologist use to measure prejudice

45. English

In the book of The Diary of Anne Frank, what was the "war within" her (or what was Anne's "war within"?)

46. chem

Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles)of He(g) is present in a helium-oxygen mixture having a density of 0.538g/L at 25celsius and 721mmHg ?

47. pre calc

rose counted her money and found that her 25 coins which were nickels, dimes, and quarters were worth \$3.20. The number of dimes exceeded the number of nickels by 4. How many coins of each kind did she have? I know that the expression for nickles would be

48. Physics

To create artificial gravity, the space station shown in the drawing is rotating at a rate of 0.85 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.85. Each chamber A simulates an acceleration due to gravity of 10.0 m/s2. (a)

49. science

How would you design an experiment to determine which of two variables?

50. Algergra

I am stumped! I have been working on these problems for the longest time and I can not figure out what I am doing wrong. Some how when I get to the last two steps I mess up, and I am beyond frustrated. The directions say: Write an equation of the line

51. government

nonparty groups that raise and distribute money to candidates are called: A)legal bribery organizations b)limited government interest corporations C)political action committees d)political interest and action committees.i think its c

52. government

propaganda is a technique:

53. statistics

level of significance, P-value, and confidence interval how do they relate?

54. ecology

what are the reasons for low phosphorus levels in soil? Please explain to me, it seems as if every site that talks about this is saying something different and I really don't understand.

55. geography/social studies

What body of land is smaller then the contenent and is completely surrounded by water

56. claire

Cuando es tu cumpleanos ( dia-mes-ano) does this tanslate to when were you born? ( day month year) is the answer correct - Tu cumpleano Febraro uno 1994 ( HELP )

57. chemisrty

Why do gases deviate from ideal behavior at very high pressures?

58. Writing

I am trying to write an essay on What ideas are true/untrue of the North.What do it means by ideas. Help??

59. Chemistry

Chromatography How can I tell which of two mobile phases is more polar? Does the fact that one solvent (e.g. isopropanol/ammonia) moves up the TLC plate slower than another solvent (e.g. hexane/ethyl acetate/ethanol)? Or should I look at how far up the

60. Us History

How did the action of Daniel Shays and his followers relate to the economic problem of the Confederation period?What was the significance of the movement he led?

what feature makes up part of the u.s. border with canada? what feature makes up much of the u.s. border with mexico?

62. math distributive property

rewrite each problem using the distributive property for the following 9 x 35 8 x 84 3 x 13

63. Math

Determine if f could be a linear function x 0 1 2 3 4 f(x) 3 5 7 11 15 is this a linear function and then... 2x - 6y = 12 3x-9y = -27 What is the solution of the system of equations? A) no solution B) a point C) infinitely many solutions Is the system

64. science

how does yeast cause bread to rise?

65. Algebra/math

simplify the expression. Assume that all variables represent positive numbers. (36^-2y^4)-1/2(xy^1/2) I can't get the answer to this I just don't know how to answer this problem. Can anyone help? Thank You! Ashley

66. eth 125

How can we get society to dwell on positive aspects instead of negative aspects, which normally leads to stereotyping?

67. algebra/math

use the FOIL method to perform the multiplication. (x^1/2-2)(x^1/2+4) I can not seem to find the answer to this problem. Can anyone help? Thank You!

68. Chemistry, Buffers, pH

Hi could someone please help me in the next 5 minutes with this question: Given this data: mass of unknown acid 1.4671g Volume of NaOH used in titration 18.47mL Concentration of the NaOH used 0.2403M pH of the original acid solution 2.16 pH of the final

69. algebra/math

use the FOIL method to perform the multiplication. (x^1/2-2)(x^1/2+4) I can not seem to find the answer to this problem. Can anyone help? Thank You!

70. Critical Thinking

Can you give me an example of a non prejudicial rhetorical devise. Also can you tell me if this statement is prejudicial rhetoric devise All SUV's are like small apartment homes on wheels

71. history-the gold rush

does anyone know good websites where i can find info about the gold rush. i need to make a journal and include information about what the journey was like, how i heard about it things like that. thanks!

72. Chemistry

Given that for ethanoic acid pKa=4.75, calculate the pH of sodium ethanoate 0.1M.

73. chemistry

if Maalox is mixed with 40ml of 0.1 M HCI and isn't neutralized, how much extra help with this antacid pill need to neutralize 40ml of 0.1 M HCL by adding 0.05 M NaOH drop by drop to back-tritrate the solution until the pH is neutral?

74. physics

A student atands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. The cliff is 50.0 m above flat, horizontal beach. With what speed of impact does the stone land?

75. physics

one of the fastest recorded pitches in major league baseball. thrown by billy wagner in 2003, was clocked at 101.0 mi/h. if a pitch were thrown horizontally with this velocity, how far would the ball fall vetically by the time it reached home plate, 60.5

76. physical science

As an object approaches the Earth’s surface, what will its acceleration be?

77. physics

The 100 kg block in figure takes 7.00s to reach the floor after being released from rest. What is the mass of the block on the left?

78. math

The diagonal brace of a shipping crate is 53 inches. The length of the shipping crate is 45 inches. Find the height of the shipping crate. please help!

79. Chemistry

Chromatography How can I tell which of two mobile phases is more polar? Does the fact that one solvent (e.g. isopropanol/ammonia) moves up the TLC plate slower than another solvent (e.g. hexane/ethyl acetate/ethanol)? Or should I look at how far up the

80. Chemistry

Calculate the pH of: a) ammonia, 0.1M, in water b) ammonium chloride, 0.1M, in water c) a buffer solution containing ammonia (0.1M)and ammonium chloride (0.01M) For NH4^+, pKa = 9.25

81. Ameician History

responding to an earlier post that was not clear, I am interesed in a time line of the development of early Americian history of the US. Thank you

82. Microeconomics

I put this question on the board before. What I am not clear on is if I should consider the \$2 million once when I doing the calculations? Qestion: A publisher faces the following demand shedule for the next novel of one of its popular authors.

83. health care in the US

What can the United States’ health care system learn from health care systems in other countries?

84. Math

On a certain farm, on average, 64 hens lay 768 eggs in 64 days. On that same farm, on average, 46 hens eat 46 kilograms of wheat in 46 days. On this farm, on average, the consumption of how much wheat (in kg) corresponds to 2 dozen eggs?

85. english

Which sentence is correct?why I eat cake, carrots, pizza, and drink soda. I drink soda and eat cake, carrots, and pizza.

86. chemistry

If the Kelvin temperature of 2 L of a gas at STP doubles, the new volume would be what ?

Does Western Union standardize products or adapt them for different markets?

88. Literacy

These letters are supposed to be unscrambled to make 4 words: eeahtkssatetlg