# Questions Asked onFebruary 22, 2008

1. ## Find Area of Parallelogram

Find the area of the parallelogram with one corner at P1 and adjacent sides P1P2 and P1P3. NOTE: There is an arrow over P1P2 and P1P3. What does that arrow mean? P1 = (0, 0, 0), P2 = (2, 3, 1), P3 = (-2, 4, 1)

2. ## Physics

We hear people talk of "ultraviolet light" and "infrared light." Why are these terms misleading? Why are we less likely to hear people talk of "radio light" and "X-ray light"?

3. ## Forced Oscillation - drwls => I need your help =)

A 2.00kg object attatched to a spring moves without friction and is driven by an external force given by F= (3.00N)sin(2pi*t) The force constant of the spring is 20N/m. Determine a) period b) amplitude of motion a)T= 2pi/omega T= 2pi/ 2pi= 1s b)A= (Fo/m)/

4. ## Self-Taught Mathematicians

Those of us who love math certainly know two basic facts about Mr. Gottfried Wilhelm Leibniz: (1) He and Newton (our calculus guy) did not get along AND (2) Mr. Leibniz was a self-taught mathematician My question is for all tutors here who love math. What

5. ## Six Vertices of A Box

Opposite vertices of a rectangular box whose edges are parallel to the coordinate axes are given below. List the coordinates of the other six vertices of the box. (0, 0, 0); (4, 2, 2)

6. ## physical science

I was doing an egg experiment that I found on line where you put an egg in white vinegar and the shell softens. It said to leave the egg for seven days. At the end of the fourth day the white of the egg which had already softened fell totally off the egg.

7. ## Financial Accounting

The purchase of office equipment on credit has what effect on the accounting equation?

8. ## Education/Subbing

How many sub teachers can really say that they are happy working as a sub teacher? Look deep inside and honestly answer the question: Are You Happy Subbing?

9. ## calculus

true of false if the sum of asubn from n=1 to infinity converges, and if a is not equal to 0, the the sum of 1/(a sub n) as n goes from 1 to infinity diverges.

10. ## Vector Algebra

Find the direction angles of the vector given below. Then write each vector in the form v = ||v||[(cos A) i + (cos B) i + (cos Y) k ]. v = -6i + 12j + 4k

11. ## Find Airplane Bearing

A plane leave a certain airport from runway 4 RIGHT, whose bearing is N40degreesE. After flying for 1/2 mile, the pilot requestd permission to trun 90 degrees and head toward the southeast. The permission is granted. After the airplane goes 1 mile in this

12. ## Chemistry

The first order reaction has a rate constant of 3.0x10^-3 s^-1. The time required for the r eaction to be 75% complete is: 95.8s 201s 231s 462s 41.7s

13. ## Physics

A helium-neon laser emits light of wavelength 633 nanometers(nm). Light from an argon laser has a wavelength of 515 nm. Which laser emits the higher-frequency light?

14. ## Science

How many gallons of water per minute can flow through a 15-ft pipeline under normal pressure?

15. ## math

Discuss the relationship between the graphs of the lines with equation y = mx +2, where m is any real number.

16. ## Calc

A rocket is launched with an initial velocity of zero, and with acceleration in feet per second per second defined by: --------( 20e^(-t/2), for 0 10 seconds. Show all work. Thanks a lot!

17. ## What Makes A Good Math Teacher?

I think a good math teacher is someone who can explain math topics at the level of students. A good math teacher is someone who does not try to impress students with his or her math skills (college math professors are famous for boasting). In your opinion,

18. ## ENGLISH

Can you help me figure out how to write a theme PLEASE?????

19. ## computers

Suppose Fred's Computers advertises that their new computer comes with exactly 1,200 megabytes of RAM in main memory. Why is this unlikely to be true?

20. ## Scince

How the change of amplitude effects the time of one cycle of a pendulum?

21. ## history

How did Hitler get so many followers?

22. ## math

How do I solve 3/4 x 1/2 x 2/3

23. ## literature

How would I show how Tom Sawyer and Huck Finn are alike in a listing question? I think I would say Tom Sawyer is 1. 2. 3 and Huck Finn is 1. 2. 3. Am I right? Thank you.

24. ## english

“Invisible Children,” is a documentary filmed by three American college students, Jason Russell, Bobby Bailey, and Laren Pole, who set out for Africa in search for a story; however, they discovered the immense suffering of Acholi civilian population in

25. ## sports

I have been searching for information on local media revenue for the Minnesota Twins and was wondering if anyone would know where I could find such information?

26. ## ?

“Invisible Children,” is a documentary filmed by three American college students, Jason Russell, Bobby Bailey, and Laren Pole, who set out for Africa in search for a story; however, they discovered the immense suffering of Acholi civilian population in

27. ## Education

I was wondering how sub teachers survive during the long summer months when there is no pay, especially if you live alone and must pay rent. If you are a sub who lives alone, what plans do you have for YOUR future, financially speaking? Do you save money

28. ## english/revise

For more than twenty years, conflict between government forces and rebel group known as the Lord Resistance Army (LRA) has disrupted life for civilians in northern Uganda. Since 1986, the Lord Resistance Army has abducted as many as 20,000 boys and girls.

29. ## science

Determine what pressure - high or low - exists at sea level at these latitudes: 90 N, 60 N, 30 N, 0 , 30 S, 60 S, and 90 S. Describe where the horse latitudes are, what the pressure and wind conditions are there, and why they have this strange name

30. ## sci275

four factors that produces changes in the population of nutrias. 2.what do you think will happen to the nutrias population after the wetland id depleted of nutrias food source?

31. ## Mathematics

A space camera circles the Earth at a height of h miles above the surface. Suppose that d distance, IN MILES, on the surface of the Earth can be seen from the camera. (a) Find an equation that relates the central angle theta to the height h. (b) Find an

32. ## Math Application

A space camera circles the Earth at a height of h miles above the surface. Suppose that d distance, IN MILES, on the surface of the Earth can be seen from the camera. (a) Find an equation that relates d and h. (b) If d is to be 3500 miles, how high must

33. ## world history

What did Mussolini's propaganda consist of? Why was it so effective?

34. ## Algebra

In this equation (Slope Intercept Form of a linear equation), y = mx + b, which variable relates to the domain and which one relates to the range of a function?

35. ## AED

i cant find ne thing for theses questions Do you have a responsibility to limit their rights?

36. ## Cross-Sectional Area

The cross-sectional area of a beam cut from a log with radius 1 foot is given by the function A(x) = 4x(sqrt{1 - x^2}), where x represents the length of half the base of the beam. Determine the cross-sectional area of the beam if the length of half the

37. ## Algebra

1)A bookshelf holds 4 mysteries, 3 biograpghies, 1 book of poetry, and 2 reference books. If a book is selected at random from the shelf, find the probability that the book selected is a biography or reference book. A)1/2 B)1/6 C)5/6 D)3/50 I chose A 5

38. ## Algebra

Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why?

39. ## CHEM PLZ URGENT!!

19. A block of aluminum has a volume of 126.5 cm3. Its density = 2.70 g/cm3. What is the mass of the aluminum? A) 342 g B) 46.9 g C) 127 g D) 0.0213 g E) 124 g The answer is A.....But I still can't figure it out....I keep getting D as an answer..

40. ## ETH

A current issue between Native Americans and the federal government. Identify the legislation that you think is linked to the issue and explain why you think there is a connection.?

41. ## TO MARIE

SraJMcGin wrote: Thank you for using the Jiskha Homework Help Forum. For your own safety, NEVER give your name, town, address or phone number. If you don't state exactly what the problem is, we can not help.

42. ## Sherman Antitrust act

How was the law enforced?

43. ## math

how do u find the average mean for four numbers and the median

44. ## SOSE

Is Gallipoli and World War 1 the same thing, or were they different battles. And I'm need to find some UNDERSTANDABLE information about World War 1.

45. ## law and ethics

managed care organization emphasize drug treatment over counseling for children with behavior problems because?

47. ## Math

What are names for shapes of curves?

48. ## Chemistry

The units for a first order rate constant are: M/s 1/M*s 1/s 1/M^2*s

49. ## math

Discuss the relationship between the graphs of the lines with equation y = mx +2, where m is any real number.

50. ## Physics

Your friend says that any radio wave travels faster than any sound wave. Do you agree or disagree, and why?

51. ## Physics

If you fire a bullet through a tree, it will slow down inside the tree and emerge at a speed that is less than the speed at which it entered. Does light, then, similarly slow down when it passes through glass and also emerge at a lower speed? Defend your

52. ## Math

What would be the shape name of a curve that gradually decreases?

53. ## Physics

What determines whether a material is transparent or opaque?

54. ## Algebra

Linear Equation -8x+4y=-12 Answer book states is y=2x-3 I am not arriving at this answer when I simpify

55. ## Physics

What astronomical event would be seen by observers on the Moon at the time the Earth experiences a lunar eclipse? At the time the Earth experiences a solar eclipse?

56. ## Physics

Why do objects illuminated by moonlight lack color?

57. ## algebraic reasoning

Josephine likes to go hang gliding. she took off from a hillside at an elevation of 700 feet. during the first 5 minutes, she went down to 500 feet. then she rode for another 5 mintues up to a height of 600 feet. she then descended at a rate of 200 feet

58. ## Physics

When you look at a distant galaxy through a telescope, how is it that you're looking backward in time?

59. ## Numerical & Proportional Reasoning

Kendra traveled to Europe and Japan on a buisness trip. In europe, she exchanged 300 U.S dollars for euros and spent 100 euros. she went to Japan and exchanged her remaining euros for yen. She spent 10,000 yen while in Japan. the exchange rate during the

60. ## TO drwls

I just wanted to say THANK YOU so much. You're a lifesaver!

61. ## math of investment

An article cost \$29885. To buy this article, a down payment of \$3420 is needed.If interest charged is 16% compunded quarterly, how much should be paid at the end of every 3 months for 1 year in order to payoff the balance? please explain,i don't

62. ## chemistry

A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ?M.

63. ## Math

Find a number such that 32 is 60% of the number.(decimal answer rounded to nearest tenth)

64. ## Math

What is the commission on a sale of \$2,500 if the commission is 16%?

65. ## Math

On a home improvement project. spent \$3000, which was 125% of the original budget (25% over budget). What was the original budget? \$______

66. ## Math

A tip at a restaurant for service is normally 15% for customary service. After going out with some friends and paying the bill which was \$60.40, Mike left a tip of \$13. His friend Tony said that he tipped way "too much". By how much money did he "overtip"?

67. ## chemistry

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.500. If a trial's absorbance is measured to be 0.310 and its initial concentration of SCN– was 0.0010 M, the

68. ## Calculus

The problem with these two questions is that I cannot determine the a and r. The 3rd question-I don't know what I did wrong. Thanks for the help! Tell whether the series converges or diverges. If it converges, give its sum. infinity (sigma) sin^n (pi/4 + n

69. ## Science

I have a 5 minute presentation on Gregor mendel. i already have the speech done and a poster. I am wondering what I could do that would be unique an would make my presenation better than everyone elses beause it is the biggest grade and I need to do good.

70. ## Social Studies

I need help finding the major lakes and land features of Indiana.

71. ## Math

Find the percent. 13% of 17?

72. ## algebra

f(t)=sqrtt^2+1 f(-9)=sqrt-0^2+1

73. ## Vectors

Use vectors u, v and w given below to find each expression. (1) v times w (2) v times u

75. ## HCA

Define Caregivers Strategies

76. ## Math

Math problem: If one of the triangle's is 130%. How do I figure out the rest of the angles?

77. ## Writing

i'm writing a rhetorical paper on the film, Blade Runner. How do i analyze a film? what are the main points that i'm suppose to look for?

79. ## Algebra

1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36. A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6 18/36 = 1/2 2)Write the equation 4^-3 = 1/64 in logarithmic form. A)log64 = 4^3 B)log^-3 64 = 4 C)log^4 1/64 = -3 D)log^4(-3) =

80. ## Chemistry

N2H4(g) + H2(g) 2 NH3(g) H1 = –1876 kJ 3 H2(g) + N2(g) 2 NH3(g) H2 = –922 kJ The H f for the formation of hydrazine: 2 H2(g) + N2(g) N2H4(g) will be

81. ## Algebra

1)Find the sum of the infinite geometric series: 1 + 3/5 + 9/25 + ..., if it exists. A)5/3 B)5/2 C)3/5 D)does not exist I chose B (3/5)/1 = .6 S = a1/1-r 1/1-.6 2.5 2)Use the Binomial Theorem to find the sixth term in the expansion of (m+2p)^7. A)21m^2p^5

82. ## music

How did the media's representation of commercial music change during the years 1971-1989 compared to the 1960's? What caused this change?

83. ## chemistry

Limestone fizzes when an acid is added. Dilute acids can break up this rock in the open. what is the name of of the process of breaking up a rock using a chemical like this acid? name another rock, which could be broken up by the same process.

84. ## Com 135

I would like to know how you all start of intro. and conclusion ideas to papers so I can get some ideas that are different from how I write mine.

85. ## budject matrix

you are the medical clinic administrator for three physicians group clinic and you are preparing a budget matrix to be presented to the physicians. The matrix budget consists of line-item, functional, and program budgets pls explain?

86. ## physics

a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? please show work.

87. ## Economics

Why is there a loss in C.S. and gain in P.S. when there is a tariff in a small country where there are forward shift tax?

88. ## general knowledge

antonym for coneal

89. ## Acceleration

What is the formuals for acceleration?

90. ## HELP

A car increases its velocity from 12 miles per hour to 50 miles per hour in .3 hours. what was the car's acceleration.

91. ## geometry

Martha works as a salesperson for momentum sales. she earns \$1,000 per month plus 15% commission on her sales. a. write an equation that expresses t, her income for one month as a function of x, her total sales for the month. b. River City Sales, another

92. ## Biology(Organic Compounds)

How many different kinds of monomers are there in starch?