Questions Asked on
March 22, 2008

  1. Physics

    Why is Young's experiment more effective with slits than with the pinholes he first used?

    asked by Emily
  2. physics!

    A stretched rubber band has a length of 0.10m and a fundamental frequency of 440Hz. What is the speed at which waves travel on the rubber band? I need some ideas to do this problem. Thanks!

    asked by Jacquelin
  3. geometry

    How do you find the surface area of rectangular prisms and cylinders??????

    asked by Austin
  4. physics!!!

    A small spherical insulator of mass 8.00*10^-2kg and charge +6.00*10^-7C is hung by a thin wire of negligible mass. A charge of -9.00*10^-7C is held 0.450m away from the sphere and directly to the right of it, so the wire makes an angle with the vertical.

    asked by Donna
  5. chemistry

    1)calculate the pressure, expressed in pascals, that the brick exerting a force of 18N, and dimensions od 9.3cm x 5.5 cm. I know that Pressure = force divided by the area. the answer I got was 0.4Pa. Is this correct? 2) why is an ax more useful to use (in

    asked by Jonathan T
  6. english: please hel.

    This is the article: Controlling Irrational Fears After 9/11* We present this selection as an example of a fairly well-reasoned argumentative essay. There is more here than arguments—there’s some window dressing and you’ll probably find some slanters

    asked by rose
  7. ap physics

    I need some help with the following problems. I got no idea how to do it...PLEASE HELP!!!!THANKS A LOT!! A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. He is closer to one cliff than the other. He

    asked by Zoe
  8. Chemistry

    an air bubble trapped in bread dough at room temperature (291k) has a volume of 1.0mL. The bread bake sin the oven at 623k(350C) calculate the new volume of the air bubblr, using charles law( Volume divided by Temperature= K) my answer is: 1.0/350C =

    asked by Jonathan T
  9. physics

    The A string on a string bass is turned to vibrate at a fundamental frequency of 55.0Hz. If the tension in the string were increased by a factor of four, what would be the new fundamental frequency? I need some guides to do it. Thx.

    asked by Mirenda
  10. English Expressions

    1. She has a ponytail. 2. She has pigtails. 3. She has braids. 4. She has long curved hair. 5. She has short wavy hair. 6. He has medioum-length straight hair. 7. He has average-length curved blond hair. ----------------------- Are the expressions above

    asked by John
  11. chemistry

    In planning to administer a gaseous anesthetic to a patient, A) why mus the anthesiologist take into account the fact that during surgery the gaseous anesthetic is used both at room temperature (18C) and at the patients body temperature (37C)? B) What

    asked by Jonathan T
  12. English Expressions

    Let's play the bingo game. Look at the big bingo board. There are expressions in each box on the bingo board. There are nine sentences in theboxes. You should write the sentences again with contractions in the boxes on the smaller bingo board randomly.

    asked by John
  13. PHYSICS!!!HELP!!

    An aircraft carrier has a speed of 13.0m/s relative to the water. A jet is catapulted from the deck and has a speed of 67.0m/s relative to the water. The engines produce a 1550-Hz whine, and the speed of sound is 343m/s. What is the frequency of the sound

    asked by Stephy
  14. English Expressions

    Will you check the following English sentences? 1. Paying attention to the intonation mark, listen carefully. (Do I have to use 'mark'?) 2. Put your tongue between your upper teeth and lower teeth, and say th by letting the air over your tongue abruptly.

    asked by John
  15. chemistry

    a 3.0L helium balloon is placed in a car sitting in hot sunlight. The temperature in the mall, when the balloon was bought, was 22C. The temperature in the car is 45C. what will be the new volume of the of the balloon. Will it be: 6.14L? I would think this

    asked by Jonathan T
  16. Govt. accounting

    The following information relates to Dell City, whose first fiscal year ended December 31, 2006. Assume Dell has only the long-term debt specified in the information and only the funds necessitated by the information. 1. General fund: • The following

    asked by sonia
  17. science

    What are some freshwater invertebrates?

    asked by Mel
  18. Math(Easy Survey Please Help)

    I need 75 of these surveys filled out to do a regression analysis for Economics. Just answer the 10 easy questions for me please. 1. Do you exercise or work out on a regular basis? 2. Are you male or female? 3. Do you smoke? 4. How many carbonated soft

    asked by Jake
  19. engglish revised

    In the first argument, the writer is trying to establish a plausible argument on catastrophic events, such as the 911 attacks on the World Trade Center, and how we as Americans are more susceptible to react with rage, when an event of this magnitude hits

    asked by rose
  20. COM 215

    The trip schecduled for Mexico during spring break has been cancelled due to the bankruptcy of the bus company. You must tell 25 of your classmates that the trip has been cancelled and that they have lost their $100 deposit. How will you convey the

    asked by Jailyn
  21. Geog-Adiabatic rates

    Given a lapse rate of 3 degrees C/1000 meters and a temp of 20 degrees C at 0 meters: A.What is the air sitting at 3,000 meters elevation?___degrees C B.If a sample of air were lifted from 0 meters to 3,000 meters elevation, what would its new temp

    asked by Sarah
  22. Algebra

    Solve the equation identify as an identity, an inconsistent equation or a conditional. My equation is 1-3/2x+7/4 I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

    asked by Tim
  23. Health

    If a six year old boy is noticeable taller than his classmates(He is 5 feet, 7 inches tall) what gland problem may he have? I think it's Dysfuntion of the throid gland Thanks for your help

    asked by Kaleigh-Anne
  24. 7th grade health

    PLease see if I am right When you do a push up from the floor what kind of movement describes the motion of your elbow flexion

    asked by Kathy
  25. algebra

    If y=7.2 when x=10, what is the value of x when y=20?

    asked by michael
  26. Logarithms

    Hi, Can anyone tell me if the following are correct please:- If x = 10y (where x > 0), then log10 x = y if a and b are positive numbers, then, 2 log 10 a / b = 2log 10 a - 2 log 10 b and lastly if a and b are positive numbers, then, log 10 ( a+b ) = 10 log

    asked by leo
  27. english-final revision

    Thanks a lot Ms. Sue. Have a great easter. Rose

    asked by rose
  28. Algebra

    I am confused about how to graph two numbers on the same line. I need to graph: x/+ -4 both on the same line I have: -6 -5 [-4 -3 -2] -1 0 1 2 solid line I am not sure if I have the right [ or if I need a ( and if I need a solid line.

    asked by Suzy
  29. Biology

    I need help on classifying different species into Kingdom, Phylum, Class, Order, Family, Genus, and Species. We need to do around 42. Thanks.

    asked by Emily
  30. French

    One more question please. It sais: "nous avons besoin DES nombres pour le commerce" and then a bit later on: "nous avons besoin DE nombres pour désigner les dates...." Why once DES and the DE ?? Is it because "le commerce" is a noun and "désigner" a

    asked by no name
  31. Maths

    solve for r r^64-1 = 2.5x10^7 (r-1) any ideas?

    asked by Mikal
  32. computers

    digital logic design ( i have a lot questios so please help me) Proof that: A¡¦.B + B¡¦.C¡¦ + A.B + B¡¦.C = 1 Q3 [2 points], According to DeMorgan theorem, the complement of W . X + Y . Z is W¡¦ + X¡¦ . Y¡¦ + Z¡¦ Yet both functions are 1

    asked by snfor
  33. Religion

    What is some History Of the Presbyterian Church

    asked by Attivia
  34. French-how to make accents

    What are the keyboard shortcuts for typing French accents? thanks

    asked by Anonymous
  35. English

    What is author style?

    asked by Anonymous
  36. Algebra

    find the slope of the line a lineperpendicular to -4x+4y=-2 answer is the slope of the line is -1.

    asked by Jen
  37. Physics

    Which will give wider-spaced fringes in a double-slit experiment, red light or violet light?

    asked by Emily
  38. Physics

    If the path-length difference between two identical and coherent beams is two wavelengths when they arrive on a screen, will they produce a dark or a bright spot?

    asked by Emily
  39. algebra

    If x is inversely proportional to y, and x=60 when y=0.5, find x when y =12

    asked by michael
  40. 12 Biology! URGENT!

    Is this right: Place numbers beside the statement below to indicate the order of events occurring in the light reactions: 3 low energy electrons at PSI are re-energized by a photon of light 5 electrons energized at PSII jump to a higher lever, as they fall

    asked by Photosynthesis
  41. Physical Science

    A friend tell you that a refrigerator door beneath it's layer of white painted plastic, is made of aluminum. How could you check to see if this is true withoutscraping away the plastic?

    asked by Rachel
  42. 12 Biology! URGENT!

    Is this right: Place numbers beside the statement below to indicate the order of events occurring in the light reactions: 3 low energy electrons at PSI are re-energized by a photon of light 5 electrons energized at PSII jump to a higher lever, as they fall

    asked by Photosynthesis
  43. 7th grade health

    When you swallow a peanut, the peanut first comes in contact with the what ? I am not sure can you please let me know of any web sites that may help thanks

    asked by Kathy
  44. Science 8th grade

    Please check my answer thanks Which of the folowing process is achieved through osmosis ? A. A cube of sugar didilving in coffee B. Particles of oxygen filling the lungs C. Water moving across thr cell membranne D. Transport of proteins from the

    asked by Alley
  45. Science 8th grade check answer

    The cellular process involves mitosis is fertilization ? True or False I picked True

    asked by Alley
  46. Health

    The constituents of DNA are what ? Sugars and lipids am I right ?

    asked by Sue
  47. Algebra

    Can someone tell me how to find a perpendicular line -3x+5y=7 My choices are 7/5 3/5 -5/3 -7/5 I cannot figure this out

    asked by Anne
  48. Algebra

    Find the equation of the line in stardard form (-5,-1) and (5,7) I can get it to 7=8/5(5)+b 7=8+b b=-1 but I can not figure it our from here answer 8x-5y=-30

    asked by Sarah
  49. Science

    The question I have is based on air having a density of 0.0013(g/mL). What is the mass of 550mL of air? How do I use the formula Density = mass/volume to solve this problem?

    asked by Sierra
  50. biology

    this right: Place numbers beside the statement below to indicate the order of events occurring in the light reactions: 3 low energy electrons at PSI are re-energized by a photon of light 5 electrons energized at PSII jump to a higher lever, as they fall

    asked by I NEED Biology help
  51. Algebra And Trigonometry

    After finding the values by using half angle formula, how to determined the quadrant

    asked by Nicole
  52. computers

    (Digital logic) using truth table Demonstrate that: X’. Y + Y’. Z + X.Z’ = X.Y’ + Y.Z’ + X’.Z

    asked by snfor
  53. Math

    What is 21 S on a D

    asked by Thomas
  54. math

    what is 15 R on a S T

    asked by Thomas
  55. Reading

    What are some essential questions that you would include in a discussion about a book?

    asked by Anonymous
  56. InDesign

    True or False? Text used in InDesign must be created in InDesign.

    asked by Anonymous
  57. English

    What are basic literary elements?

    asked by Anonymous
  58. 7th grade health

    Where could i find the correct order of how sound waves or sent to the brain ? thanks

    asked by Kathy
  59. Physics

    In our everyday environment, diffraction is much more evident for sound waves than for light waves. Why is this so?

    asked by Emily
  60. Physics

    By how much shoould a pair of light rays from a common source differ in length to produce destructive interference?

    asked by Emily
  61. Algebra

    The first two terms of a geometric sequence are a1=1/3 and a2=1/6. What is a8, the eighth term?

    asked by michael
  62. englishrevised

    what to you suggest for those words.

    asked by rose
  63. english- final revision

    In the first argument, the writer is trying to establish a plausible argument on catastrophic events, such as the 911 attacks on the World Trade Center, and how we as Americans are more susceptible to react with rage, when an event of this magnitude hits

    asked by rose
  64. Physics

    Is getting shot considered to be an elastic or inelastic collision if blood shoots out everywhere?

    asked by Jess
  65. Religion

    Are there church websites where I can download a lot of wmv or avi sermon files with ease? If you know them, would you let me know?

    asked by John
  66. Health Adminstration

    As a case manager what moral responsibilities would you have as a health in the field?

    asked by Me
  67. Math

    Please help Which of the following numbers are integers 2/3, 35, 0.093, -650, 42.5 Determine the maximum and minimum values of the following set of numbers 3. -36/7, -1, -2/3, 5/4, -5, 26/9

    asked by Sonya
  68. Science 8th grade

    A cell digests proteins through a ___________ process? Where I can I get some information on this thanks

    asked by Alley
  69. Health

    Normal urine is____________ as indicated bt it's ph value I think it is slightly alkaline please check my answer thanks

    asked by Sue
  70. Algebra

    Solve the equation identify as an identity, an inconsistent equation or a conditional I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

    asked by Tim
  71. history

    Discuss the transformation from agriculture to industrial of United States from 1865 -1940

    asked by Anonymous
  72. Speech

    Where can I find newspaper or magazine articles on the pet population problem?

    asked by Jules
  73. literary

    the point of our highest interest and greatest emotional involvement in a narrative

    asked by kristin
  74. math

    How do I find the k,c,V.S., and P.S. when I have a chart of monthly temps for a year?

    asked by Heaven
  75. Science

    Explain the four factors that produce changes in population size. Which factors are affecting the population size? What do you predict will happen to the nutria populatin after all the land is depleted of the nutris'a food resources?

    asked by Anonymous
  76. Math

    How do you round these numbers to the nearest tenth 84,96,71

    asked by Amal