# Questions Asked onSeptember 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.

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?

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

4. ## Chemistry

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

5. ## algebra

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

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

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.

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?

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

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?

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!!!!

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

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.

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

15. ## ALGEBRA

I NEED SOMEONE TO CHECK THESE PLEASE!!! IF B IS REPLACED WITH A NUMBER THAT SHOWS THE RELATIONSHIP INDICATED IN THE TABLE, ARE THESE ANSWERS CORRECT? Y = -X + B X Y 1 0 2 -1 8 -7 10 ? 20 ? 40 ? SO,

16. ## Chemistry

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

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!

18. ## science

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

19. ## Math 115

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

20. ## Math 115

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

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?

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.

23. ## math

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

24. ## science behavior

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

25. ## geometry

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

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

27. ## math

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

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?

29. ## physics

Calculate the watts equivalent of 22kilocalories consumed in 24 hours

30. ## math

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

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

32. ## Math 115

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

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

34. ## math

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

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

36. ## math

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

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?

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

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.

40. ## math

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

41. ## social studies

who was the first floridians?

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

43. ## science

how do you do a science project?

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

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?')

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

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

48. ## science

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

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?

50. ## Math

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

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

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

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?

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

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

56. ## algebra

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

57. ## algebra

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

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.

59. ## algebra

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

60. ## computer

how do you install the SRI test to your computer?

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

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

how do you write eighthundredthousand,two

64. ## geometry

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

65. ## Socials

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

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?)

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

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

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

70. ## biology

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

71. ## U.S. History

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

72. ## Quick Question (URGENT)

What does this symbol mean (#) thank you

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}

74. ## Science

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

75. ## Algebra (math)

3{[4(n-4)+16]-[3(5n-3)+5]}

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?

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

78. ## English

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

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

80. ## english

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

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?

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

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

84. ## algebra

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

85. ## Social Studies

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

86. ## algebra

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

87. ## 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!!!

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

89. ## chemistry

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

90. ## algebra

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

91. ## ALGEBRA

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

92. ## ALGEBRA

what is a trivial equation?

93. ## algebra

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

94. ## 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

95. ## algebra

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

96. ## algebra

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

97. ## chemistry

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

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?

99. ## Cultural Diversity

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

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

101. ## history

define history.explain historical sources and thair limitation.

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

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?

105. ## history

explain historical limitation

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

107. ## social studies

what is historical limitation.

108. ## social studies 11

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

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

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

111. ## Chemistry

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

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