Questions Asked on
September 11, 2009

  1. physics

    When you are running and want to stop quickly, you must decelerate quickly. What is the origin of the force that causes you to stop? Estimate the maximum rate of deceleration of a person running at top speed to come to rest.

    asked by perry
  2. college

    A customer wants to mail a package. The postal clerk determines the cost of the package to be $18.95, but only 6¢ and 9¢ stamps are available. Can the available stamps be used for the exact amount of postage for the package? Why or why not?

    asked by Lisa
  3. Chem

    Lewis structure of [(CH3)3O]+. Be sure to show all atoms, bonds, lone pairs, and formal charges. Convert CH3CH(Cl)CH(OH)CH3 into a skeletal structure. If you could explain it, it would help. Or somehow do some of it here and explain. Im having a lot of

    asked by Amy
  4. Chemistry

    Draw the best Lewis structure for NCCH2C(O)CH2CHO, a neutral molecule. Show all atoms, bonds, lone pairs, and formal charges.

    asked by Cathy
  5. algebra

    Pleas help with this. Explain the steps so I can understand what I am doing. solve 0.3x + 9

    asked by algebra
  6. physics

    A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time a. what is the correct

    asked by Andy
  7. chemistry

    Calculate the partial pressure of 24 g methane, 48 g of oxygen and 56 g of nitrogen contained in a 25L container. What is the total pressure.

    asked by josh
  8. Physics

    A bike racer is riding his new bike at Silverstone. The track is 4km long. a) What is his average speed in m/s if he does a lap in 2 minutes? b) What is his velocity after one lap?

    asked by Nabiha
  9. physics

    you are standing on one side of the river. Figure out the width of the river. All calculations have to be made on the side you are standing on. You cant step into the river or cross it. You may use the 2 laws ( sine and cos ). no guessing allowed. has to

    asked by just wondering
  10. MTH 156

    If P (A) = 2/11, P(B) =3/11, and P(C) =4/11, what can you say about P(A or B or C) when P(A and B and C)=0?

    asked by lorie
  11. stoichiometry

    if 5.00g magnesium is combined with 10.0 g of chlorine, show by calculation which substance is the limiting reactant and calculate the theoretical yield of magnesium chloride for the reaction. Someone PLEASE HELP ME!!!!

    asked by Laura
  12. Quick Question #2 (URGENT)

    How would show/ask 'What is your phone number?' in symbols and pictures. Would having a picture of a telephone and the number sign beside it, and write equal sign then question mark demsonstrate this question? Example: phone pic (#)=? If my idea doesn't

    asked by John
  13. math (27)

    suppose there is a 3-degree drop in temperature for every thousand feet that an airplane climbs into the sky.If the temperature on the ground which is at sea level is 63 degrees what would be the temperature when the plane reaches an altitude of 30,000 ft.

    asked by scooby9132002
  14. physics

    A rope of negligible mass passes over a puley of a negligible mass attached to the ceiling. One end of the rope is held by stdent A of mass 70 kg who is at rest on the floor. The opposite end of the rope is held by student B of mass 60 kg who is suspended

    asked by physics


    asked by ggift
  16. Chemistry

    How many moles of bromine atoms are in 8.0x10^20 bromine molecules?

    asked by Anonymous
  17. Algebra

    3 (in the nook) of the radical of 8 raised to the second power according to my book equals 2^2 which equals for. But how and why does this equal 2^2? Can you explain the process please? I don't get how that radical equals four! Thanks for your help!

    asked by Eve
  18. science

    Why do many science instructors suggest that younger students cannot develop adequate hypothesis

    asked by Anonymous
  19. Math 115

    13/18 + 11/18 then write all answers in the lowest terms? A-8/9?

    asked by A
  20. Math 115

    9/11 - 3/11 + 7/11= 1/11? write in lowest terms

    asked by A
  21. math

    Number problem. You work 7 hours (h) one day, 5 h the second day, and 6 h the third day. How long did you work, as a fraction of a 24-h day? A-18/24?

    asked by Ak
  22. math

    suppose there is a 2-degree drop in temperature for every thousand feet that an airplane climbs into the sky.If the temperature on the ground which is at sea level is 52 degres what would be the temperature when the plane reaches an altitude of 27,000 ft.

    asked by scooby9132002
  23. math

    13/18 + 11/18 then write all answers in the lowest terms? A-3/2?

    asked by A
  24. science behavior

    recommendation for which research method should be used to gather data on the pathological liars and their spouses.

    asked by Anonymous
  25. geometry

    i have a triangle and i have to find the are the measurements...3/8...3/8..3/8 on each side. 3/8+3/8+3/8=9/8?

    asked by A
  26. math

    how would i find the least common multiply of 12,20,35? i had 2 till i divided it by 25 and it did not work

    asked by A
  27. math

    1/3+5/12+4/5=10/20 the least common multiply is 2/4?

    asked by A
  28. Math

    A forester has 43,682 seedlings to be planted. Can these be planted in an equal number of rows with 11 seedlings in each row?

    asked by Rebecca
  29. physics

    Calculate the watts equivalent of 22kilocalories consumed in 24 hours

    asked by ashley
  30. math

    Find the least common denominator (LCD) for fractions with the given denominators 13/15 - 11/20=2/5?

    asked by A
  31. psy 210

    case study: how might michael's situation illustrate adjument? how might this situation become an opportunity for personal growth? could this be correct? michael's situation illustrating adjustment could be that he faces his situations face on and know

    asked by Lea
  32. Math 115

    9/11 - 3/11 + 7/11=13/11 which is improper so the answer is 1 1/11?

    asked by sally
  33. chemistry

    Calculate the molar mass of a gas if 0.805g of this gas has a pressure of 4.00 bars at 305K in a 1 L. What is the gas density at this T and P, and what is the density at STP

    asked by john
  34. math

    find lcd of 1/3,5/12, 4/5 =37/60?

    asked by p
  35. intro to management accounting

    The Minnetonka Corporation, which produces and sells to wholesalers a highly successful line of water skis, has decided to diversify to stabilize sales throughout the year. The company is considering the production of cross-country skis. After considerable

    asked by Lia
  36. math

    17 11/12 / 6 1/10 = 343/366?

    asked by sally
  37. math

    Business and finance. Lunch meat sells for about $3 per pound. You use about 1/2 pound per day for sandwiches. How much should you budget for lunch meat over the next month (about 20 workdays)? =$30.00?

    asked by sally
  38. math

    Business and finance. Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than

    asked by sally
  39. English

    What are the adjectives and adverbs in the sentence: Happily, we hoisted our heavy backpacks onto our backs and set out on the long rocky trail that led homeward.

    asked by Brittny
  40. math

    13/15-11/20=52/60-33/60=19/60 ?

    asked by p
  41. social studies

    who was the first floridians?

    asked by smart
  42. English

    If you hang back and reserve and criticise at first, you are preventing yourself from getting the fullest possible value from what you read. But if you open your mind as widely as possible, then signs and hints of almost imperceptible fineness, from the

    asked by Lena
  43. science

    how do you do a science project?

    asked by smart
  44. Trig

    I have no idea how to do this problem From an airplane flying 2 kilometers aboce the ocean, a piolet sees two ships directly to the east. The angles of depression to the ships are 8 degrees 20 minutes and 75 degrees 40 minutes how far away are the ships? I

    asked by Trig
  45. English

    e.g. You know what? (I think this expression is frequently used. What is the meaning of this one? Is it called an echo question? What is the difference between 'You know what?' and 'What do you know?')

    asked by John
  46. math

    can you please check my answers? 12, 20, and 35 LCM =420 1/3+5/12+4+5=60 LCD 13/15-11/20=19/60 What is the combined price for a 1/2-in. sheet and a 5/8-in. sheet? 1/2PRICE $17.88 5/8 PRICE$19.13 =37.01 1 1/15+3 3/10-2 4/5=1 17/30 5 1/3+2 1/4+3 1/2=11 1/12

    asked by p
  47. French

    Can you check these: Directions: State whether the sentences are vrai or faux? 1. Un bagage à main est une très grande valise. Answer: faux 2. Avant un voyage on fait ses valises. Answer: vrai 3. Un vol intérieur est un vol entre deux pays. Answer: vrai

    asked by Candy
  48. science

    calculate the cost of using a 100w lamp for 10 hours if electrical energy costs 11.3 per kwh

    asked by georgie
  49. physics

    A bike racer is riding his new bike at Silverstone. The track is 4km long. a) What is his average speed in m/s if he does a lap in 2 minutes? b) What is his velocity after one lap?

    asked by Nabiha
  50. Math

    I forgot how to do this- 8/9-4/5=

    asked by Jennifer
  51. Geometry

    The inside lane in the track is 50m and the outside of the track is 100m 4 lanes are added around the outside of the track shown above. Each lane is 1 meter wide and the lanes are immediately next to each other with no space in between. If Teresa runs once

    asked by hannah
  52. Alegebra

    Can some one please help me with this 3 problems I have a hard time with probabilities I'm studying for my mid-term. Thank you 1) Urn A has balls numbered 1 through 7. Urn B has balls numbered 1 through 5. A ball is selected at random from urn A and then a

    asked by Jessi
  53. AP US History

    What were the diverse purposes of England's American colonies and how were those purposes altered in the early years of settlement?

    asked by Katelynn
  54. English

    Tony Smith 47120-34 Albertroad Strathfield. 2135. Sydney NSW Australia (This is an address. Would you check it? And let me knwo how to read the numbers. What about the punctuation marks. Do we have to use 'commas' or' full stops'? Please correct errors and

    asked by John
  55. Trig Picture

    maybe i drew it wrong... h t t p : / / i 3 2 . t i n y p i c . c o m / i p m k o 5 . j p g the way my teacher taught me the angle of depression was the anlge that is made with a horizontal line or something like that i believed i drew it right oh and by

    asked by Trig Picture
  56. algebra

    Find the domain of the function? P(x)=x^2 - 2x + 10 I think it is {x|x is a real number}

    asked by scatterbrain
  57. algebra

    solve for the indicated letter c=2d, for d solution is d=

    asked by scatterbrain
  58. algebra

    find the indicated outputs for f(x)=3x^2-5x I get f(0)=0 f(-1) = 1 f(2) =8) am I doing this right if not could you explain where I am wrong.

    asked by scatterbrain
  59. algebra

    Find the slope if it exists? x=-4 I believe it is M=4

    asked by scatterbrain
  60. computer

    how do you install the SRI test to your computer?

    asked by smart
  61. 10th grade English

    This is my history essay (well.. a speech) due in 5 days. Please correct any mistakes or awkward phrases ASAP. Thank You Good morning/afternoon Mr Bean and fellow classmates. Australia, as a country, has a short, yet explicit history since the arrival of

    asked by Andy
  62. HRM

    Create a script that can be used to open up an orientation workshop/class. Be sure to address the issues listed below and clearly state why such discussion is the responsibility of the HR department. Within the script, include the benefits of addressing

    asked by Anonymous
  63. 5th grademath

    how do you write eighthundredthousand,two

    asked by pam
  64. geometry

    Write an expression for the quantity 506000cm in which it is clear that all the zeros are significant.

    asked by Gigi
  65. Socials

    what three rules should be applied when using primary source documents to make sure that they are reliable and accurate?

    asked by Rebecca
  66. English

    1. He sometimes skips class. 2. He seldom skips a class. 3. He never skips classes. 4. He never cuts classes. 5. He seldom cuts lessons. 6. He hardley cuts a lesson. 7. he barely cuts the lesson. 8. He often cuts lesson. (Which expressions are right?)

    asked by John
  67. Geology

    Respond to the following scenario: o Your younger brother is in 5th grade. He comes home and tells you to look at an animation his teacher showed him in geology class. o Review the Continents of the Past animation on this week¡¦s aXcess page. o After

    asked by A
  68. Geography/World History

    Can you give me some details or descriptions of the rainforests in Africa. And also can you give me some animals that live there? Thanks

    asked by Anonymous
  69. AP Physics B

    Calculate the force of gravity on a spacecraft 12,800 km (2 earth radii) aboce the Earth\'s surface if its mass is 1400 kg. Ok for this question I first converted to meters for the radius then applied newtons law net force radial = m1 a radial = Fg = r^-2

    asked by AP Physics B
  70. biology

    Name 3 life forms that change over time. What changes about these life forms as time passes?

    asked by TONI
  71. U.S. History

    What were the relations between the English settlers and the Indians of the southern Atlantic coast?

    asked by Morgan
  72. Quick Question (URGENT)

    What does this symbol mean (#) thank you

    asked by John
  73. Math

    Help, I am stuck: Find (A �� B) �� C, given A = {s, e, t}, B = {m, e}, and C = {f, r, e, e}. A) { } B) {s, e, t, m, f, r} C) {e} D) {s, e, t, m, e, f, r, e, e}

    asked by Blake
  74. Science

    Its July 4th 3pm in salt Lake City Utah what day and time is it in Tokyo Japan.

    asked by Welma
  75. Algebra (math)


    asked by scooby9132002
  76. Algebra

    There were 1000 more students at the soccer game than nonstudents. Student tickets were $8.50 and nonstudent tickets were $13.25. If the total revenue for the game was $75,925, then how many tickets of each type were sold?

    asked by Bev
  77. math am i correct (28)

    after diving 90 m below the sea level a diver rises at a rate of 3 meters per minute for 8 min. where is the diver in relation to the surface? d=r*t 90=24 30/8

    asked by scooby9132002
  78. English

    Hello I am in class six and i need a little discreption about indo-pak war 1965 for my H.W.

    asked by Flwerita
  79. All

    I just wanted to give thanks to all of the people on this website for all of the hard work and time you have given to me and to others. I still have much work to do so I just hope you will continue to be there for me as well as others.Thank you and God

    asked by p
  80. english

    how can i formally start and essay about a certain interest? Any suggestions?

    asked by Kim
  81. algebra

    Can someone teach me the steps in finding these like terms I am not sure I am doing it right? 19c + 5d - 10c -8d I come up with 19c -10c =9c + 5d - 8d = 3d so: 9c - 3d do I finally got this?

    asked by Help
  82. hi ms.sue

    Hi ms.sue! this is henry thanks alot for the help yesterday. In parts of Africa beginning in the 1960s: A)most efficent farming methods have helped reduced the effects of drought. B)severe droughts turned farmland into wasteland C)mild droughts had small

    asked by henry
  83. check geo

    A_____ has caused great suffering in sudan: A)civil war lasting for more than a decade B)influx of tourist to the region C)increase in food production during the past 20 years D)decades long war with ghana my choice b

    asked by henry
  84. algebra

    simplify 5[-8-(34-49)]

    asked by algebra
  85. Social Studies

    When water sinks into the soil, what does it become?

    asked by Samuel
  86. algebra

    evaluate x + y/8 x=65 and y=7

    asked by algebra

    for which table(s) of values is the relationship linear and how? X 5 10 15 20 25 30 Y 20 30 40 50 50 50 I don't understand this at all...please help!!!

    asked by ggift
  88. please edit

    At the age of 12 I had developed a great interest in the art of Acting. Acting has always been a passion and a part of me. What I like about acting is that you can go on a stage or in front of a camera without worrying about what people will think because

    asked by jj
  89. chemistry

    Why is the second not defined by the length of day? Is it because it's such a small fragment of time?

    asked by susie
  90. algebra

    a=3b for b The solution for a = b=3a did I do this backwards?

    asked by algebra

    what are five ordered pairs that make this equation true Y = 20 + X/3 (that's x OVER 3)

    asked by ggift

    what is a trivial equation?

    asked by ggift
  93. algebra

    2x + 3y =6 2x + 3y = 4 I get these lines are neither parallel or perpendicular. Am I doing this right?

    asked by algebra

    THE POLITICAL NOISE PROBLEM: The amount of background noise is important to television news reporters. One station developed the formula N= -t2 + 12t + 54 showing the noise level in decibels (n) as it relates to the time after the speaker stops talking in

    asked by ggift
  95. algebra

    solve y-8> -20 I get 28 am I correct?

    asked by algebra
  96. algebra

    solve -0.6x < -12 I come up with {x|>20

    asked by algebra
  97. chemistry

    suggest how the ester might be separated from any unreacted ethanoic acid or methanol

    asked by skajan
  98. Math

    Will the intequartile range always be less than the range for a set of score? Is there an example of a time that the intequartile range will be greater?

    asked by Amy
  99. Cultural Diversity

    Do you believe the local government should be involved with reproduction choices and abortion access?

    asked by jckkoo
  100. 4th grade english

    Even a poor person could one day live at Pennsylvania Ave. Is poor person considered a proper noun cause it names a specific person.

    asked by Tracy
  101. history

    define history.explain historical sources and thair limitation.

    asked by aliyu
  102. Business

    I need a little help understanding the Business Organization portion of the Business Model. I have the definition for it, but I don't understand it: The system of task and authority relationship which coordinates and controls the interactions between

    asked by A.H.
  103. physics

    A ball is thrown upward from a platform 5.1 meters high with a speed of 13 m/s at an angle 45 degrees from the horizontal. what is the magnitude of its velocity when it hits the ground?

    asked by Andy
  104. history

    please explain sources of history.

    asked by bello
  105. history

    explain historical limitation

    asked by kelly
  106. English

    Hello i am in class 6 and i have to write about Indo pak war on 1965 i have seen Wikipedia and wrote something from that but it`s too big for me and it have so much information so it is really hard to take out some points. i need a information about Indo

    asked by dil dil P
  107. social studies

    what is historical limitation.

    asked by kelly young
  108. social studies 11

    what attitudes do you think contributed to support for the evacuation of japanese-canadians during world war II? Give evidence

    asked by jj
  109. trig

    Given that sin^2ceta/1-cos ceta -sin^2ceta/1+cosceta=1 where 0degress is less than or equal to ceta and less than or equal to 360 degress. find the value of ceta

    asked by Padmore
  110. math

    A company that makes thing-a-ma-bobs has a start up cost of $ 1399. It costs the company $ 1.87 to make each thing-a-ma-bob. The company charges $ 5.89 for each thing-a-ma-bob. Let x denote the number of thing-a-ma-bobs produced. 1. Write the cost function

    asked by Completely lost?!
  111. Chemistry

    What si the molar mass of Pb3(PO4)2 in units of g/mol?

    asked by Anonymous
  112. english

    We must not squander our power, helplessly and ignorantly, squirting half the house in order to water a single rose-bush (1).” I was thinking that this quote means to focus on one thing at a time. Is there anything else I am missing from it. It's from

    asked by Lena
  113. subgh

    Reflect on your own worldview and compare it with the three worldviews presented in the text. Provide examples of the benefits of your view to defend your position.

    asked by ashley
  114. For MathMate

    Hi! So i posted a question yesterday and I worked on but before i submit my answer do you think you can check my answers? 1. 7x+3y= pi 4x-6y= pi^2 2. 2x+3y= 0 4x+6y= 0 2 3. x+3y=1 4x+ 6y= 1 4. x+y=5 x+2y=10 5. 2x-3y=5 4x-6y=10 1.U 2.N 3.N 4.U 5.I

    asked by Completely lost?!