# Questions Asked onFebruary 8, 2009

1. ## chemistry

I am confused on how to even start this problem... A ground state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and

2. ## Physics

We were doing a refraction lab where you passed a lazer beam through a water in a semi-circular dish. I was wondering why we used a semi-circular shape?

3. ## Physics

Calculate the following, expressing the answer in scientific notation with the correct number of significant figures: (8.86 + 1.0 * 10^-3) / 3.610 * 10^-3 please help me write out the equation and fill in the appropriate data thanks for your help Jiskha

4. ## science

input and output are good words to use when discussing systems because.. Two in puts, two outputs, and two side effects of the health care system are... The inputs to a garden that occur naturally are.. THe inputs that are provided by humans are.. Systems

5. ## SCIENCE!!

why are input and output good words to use when dissucssing systems?? also... what are two inputs and two outputs of health care system. also... what are the inputs to a garden that occur naturally? sorry i have so many questions but i have a test tomorrow

Given the equilibrium constant values: 1.N2(g)+ 1/2O2(g) N2O(g) KC=2.7*10^{-18} 2.N2O4(g) 2NO2(g) KC= 4.6*10^{-3} 3. 1/2N2(g)+ O2(g) NO2(g) KC=4.1*10^{-9} ----------------------------- 2N2O(g)+ 3O2 (g) 2N2O4(g) I need help i dunt know what to do next Part:

Assign oxidation numbers to each atom in the following compounds: HI, PBr3, GeS2, KH, As2O5, H3PO4 (the numbers should be subscripts)

8. ## science chemistry

How many moles of oxygen atoms are there in 2 moles of CuSO4?

9. ## Poem: I Hear America Singing By: Walt Whitman

Could you check this question please? Thanks. 1. What is the significance of the poem? (i.e. what does it mean and what impact does it make on the reader?) Answer: The poem "I Hear America Singing," means that all Americans are working happily at there

10. ## accounting

In 2007, Paul who is single has a comfortable salary from his job as well as income from his investment portfolio. However, he is habitually late in filing his federal income tax return. He did not file his 2007 income tax return until November 30, 2008

11. ## chemistry

I am confused on how to even start this problem... A ground state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and

12. ## chemistry need help asap!!!!!!

How do you balance these chemical equation? o Fe2O3 + 3H2 → 2Fe + 3H2O o 4NH3 + 5O2 → 4NO + 6H2O

13. ## markrting

How does Nike's Web site help the company strengthen its relationships with its stakeholders?

14. ## english

What would be the possesive form of a noun?

15. ## accounting

How the beginning financial position in a ledger set up?

16. ## math, pre-statistics

A gumball machine is filled randomly with gumballs:red,green,purple,white,pink and yellow. The company claims the following percentages of each can be found in an unopened carton.30%red,20%green,20%purple ,20% white,5%pink and 5%yellow. What is the

17. ## Atoms- Science

Elements having 3 or fewer electrons in the outer energy level are classified as ____________________.

18. ## English

In the book "I Know Why the Caged Bird Sings," what was the phrase that Maya Angelou said that caused her grandma to whip her? (Her grandma thought it was a sinful thing to say). I remember it was something that the average person would not think was

19. ## Arts and Culture

Can anybody help me with this question? I'm a little confused by what I'm really suppose to do. Thanks. I'm to select two works of art. Then the chosen works must be from the field of visual art, architecture, literature, or music. One piece must be from

20. ## Physics

1.) a charge of -2x10^-9 C in an electric field between two metal plates 4cm apart is acted upon by a force of 10^-4 N. a.) what is the strength of the field? b.) what is the potential difference between the plates? my question: how will going to solve

21. ## chemistry help

how do you balance these chemical equations NH4)3PO4 + Mg (CH3COO)2 -> Mg3(PO4)2 + NH4CH3COO MoO3 + H2SO4 + Zn -> Mo2O3 + H2O + ZnSO4

22. ## chem

The diameter of a neutral neon atom is about 1.4 multiplied by 102 pm. Suppose that we could line up neon atoms side by side in contact with one another. Approximately how many neon atoms would it take to make the distance from end to end 1 cm? I got

23. ## math

you start with an equilateral triangle and then trisect each of the sides with a new equilateral triangle on the middle third of each trisection, repeat the process indefinitely how would you prove that the perimeter is infinite?

24. ## physics

True or false questions a)Rubbing a polythene rod with a duster gives the rod extra negative charge. b)Rubbing a polythene rod with a duster takes away positive charge from the duster. c)The duster will have the same charge as the polythene rod it has

What is 3x3

26. ## Physics

The nucleus of an atom has a charge of 65 protons. (a) What are the direction and magnitude of the electric field at 4.9 x 10^-10 m from the nucleus?

27. ## CRT205

Other questions have been asked about the article "Contolling Irrational Fears After 9/11 and Identifying at least two arguments and answering the questions on the syllabus. -I have found two which I think can be used. Will you please let me know if these

28. ## Pre-calculus

ARE THESE ANSWERS CORRECT? Directions: The playing times for 20 songs on a top-hits radio station are recorded in the chart below. Using the times listed in the chart, circle the correct answer for questions 1-3 below. Playing Time (minutes:seconds) 3:32

29. ## chemistry need help asap

how do you balance these equations? Ag2O -> Ag + O2 C6H6 +O2 -> CO2 + H2O

30. ## SCIENCE!!

what is a fulcrum, the effort and the load? also what is a Class 1 lever, Class 2 lever, and Class 3 lever? plz helpp! thanks:)

31. ## 4TH GRADE URGENT LATE MATH HOMEWORK!!!!

What shape has the same number of vertices as faces? Thanks!

32. ## SCIENCE!!

1.Inter - means between or among and connect means to link - how does the word "interconected" apply to systems and subsystems? 2.Choose two systems and explain how the component affect the way the other components function. 3.How might one understanding

33. ## humanities

What influences did Judaism have on the development of early Christianity? What do they have in common and what differences make them unique?

34. ## chemistry

What chemical test do you use to distinguish between iron and iron sulphide (axcept using a magnet)?

35. ## chemistry...DRBobb i have a questionnnn

We actually talked about this before just to remind you im posting the previous post below: ______________________________________________________ ____________________________________________________ And i have a different question regarding a post someone

36. ## Ochem Lab

Suggest an appropriate reducing reagents for the following substrates and predict the reaction:(1) 2-hexanone, (2)ethyl 4-nitrobenzoate, (3) hexanal

37. ## riddle

what comes next? O,T,T,F,F,S,S,E,......

38. ## physical science

if the absolute pressure of gas is 550.280kPa , its gage pressure is ?

39. ## Physics

A swimmer tries to go straight across a river that is 500m wide. The swimmer can swim at 1.5m/s. There is a current of .05m/s downstream. Calculate a) the actual velocity of the swimmer b) how long it will tale to reach the far shore c) how far donstream

40. ## chemistry

Did mass appear to be conserved during this chemical reaction? In other words, did it look like there was more or less mass than what you started with? Simply describe what you saw, not what you think should have happened. Use complete sentences for your

41. ## photography

i was assigned a project to recreate a famous photo with my own black and white camera. it can be of anything that would be easy to recreate-people or places. i live in london. who are some famous photographers (portrait or other) or some famous photos

42. ## Math

The directions say to use a grapking utility to approximate (to two-decimal-place accuracy) any relative minimum or maximum values of the function: y=x^3 - 6x^2 + 15 Can someone please help me because my graphing calculator is not working!!!

43. ## english

how would henry david thoreau react to the issues of abortion and the iraq war please help me thank you

44. ## Social Studies

Why Did European explorers claim land in North America?

45. ## CRT205

Since it is the very nature of terrorism not only to cause immediate damage but also to strike fear in the hearts of the population under attack, one might say that the terrorists were extraordinarily successful, not just as a result of their own efforts

46. ## Math

you have 9 terms, the first is 0 and the 9th is 12 one of the outputs is 27 what is the equation for the pattern?

47. ## Math

This question is based on a project- Describe three concentric circles having a 1-inch, a 3-inch, and a 4-inch radius. Draw the diameter of the large circle.(This is also the diameter of the two smaller circles) Please I Need So Much Help. This Project Is

48. ## science

what object orbits the sun ?

49. ## Math help

3. You recently started the paperwork to purchase your new home, and you were just notified that you can move into the house in 2 weeks. You decide to hire a moving company, but are unsure which company to choose. You search online and are interested in

50. ## Science

Hi, could someone please explain radiation,conduction, convection, the kinetic molecular theory, and the particle theory? Thanks!

51. ## Psychology

What is the difference between absolute continuity and differential continuity? Search does not help as it deals with math not the psychology side. Thanks

52. ## science

what is the difference between a chemical reaction and physical separation.

53. ## Science

how many moles of oxygen atoms are there in 2 moles of CuS04?(4oxygen) please show calculations

55. ## Physics - urgent!!!

A swimmer tries to go straight across a river that is 500m wide. The swimmer can swim at 1.5m/s. There is a current of .05m/s downstream. Calculate a) the actual velocity of the swimmer b) how long it will tale to reach the far shore c) how far donstream

56. ## combinatorics/probability

Can't figure this problem out... wasn't great at the combinatorics unit, then it turns out everything carries over to probability. five couples attend a bridge party, including mr. and mrs. smith. they are randomly assigned partnership pairs. 1.

57. ## history

I am struggling to figure out the way that student potests effected the Vietnam War can anyone help?

58. ## English

Pick a word from the parenthesis, or choose a different word, that best fits in the sentence below: Joe DiMaggio was (famous,known,remembered,recognized,etc..) for holding the record for the longest consecutive game hitting streak (56 games) in 1941.

asked by SMILEY (I NEED MS> SUE OR WRITEACHER!!) HELP!!
59. ## science

what is the difference between a chemical reaction ans physical separation.

60. ## History

Was Sun Yat Sen's party (KMT) disorganized or supportive?

61. ## Math

If 156 divided by 1 what is it?

62. ## algebra

1. 8 less than a number is 15. find the number. 2. a number less than 8 is 15. find the number. 3. 5 times a number is 45. find the number

63. ## Algebra 2

Ok so I'm suppose to do this Square root of 6 ___________________ Square root of 2 I know when you divide a radical over radical and they have the same what ever it's called (the same number outside of the radical that determines if it's cube root squared

64. ## math

log(X/0.1)=0.14 how do i do this?

65. ## american revolution

the american revolution was an attempt by the patriots to

66. ## probability/stat

A lottery draws n numbers, values 1-N , from a hopper that replaces the number after it is drawn, i.e. probability of each number appearing remains constant. At the end, the winning number is drawn from the same hopper. What is the probability that the

67. ## Chemistry/Dimensional Analysis

The EPa detection limit for phosphate in water samples is 0.0450 milligrams per liter. Can phosphate be detected if 55.0 nanograms are found in 500.0 mL of solution? Show your calculations and explain.

68. ## Math

Each side of a triangle ABC is 75 units long. Point D is the foot of the perpendicular drawn from A to side BC. Part E is the midpoint of line segment AD. Find BE. Show picture and work.

69. ## math, pre-statistics

On a 3 day vacation to Seattle the local weather forecaster predicts a 60% chance of rain everyday.What is the probability that it will rain everyday of the vacation.(round to the nearest thousandth)

70. ## psychology

What task component distinguishes between the wechsler scales from the SBIS?

71. ## Physics

How do I find index of refraction if I have the incident angle and refraction angle?

72. ## Econ

There are several features people would like money to possess (portability, durability etc.) Name two features or aspects of money that explain why diamonds do not serve as money in most countries. Acceptability- most countries just don't accept it.

73. ## Literature/Need Picture

Could you help me find a good picture of "Life" I couldn't find anything on google images but maybe you can. Thanks for your help.

74. ## health

can you please give me some information on how teen pregnancy has affected poverty within the last 10-20 years

75. ## psychology

what is distingues the wechsler scales from the SIBS?

76. ## science atoms

Elements having 3 or fewer electrons in the outer energy level are classified as ____________________.

77. ## history

hi i need information to write an essay on the united states policy towards indians in the years following the civil war

78. ## English

Why is power and greed sometimes not the main cause of war? Why is disharmony sometimes not the main cause of War? few examples for each

79. ## Chemistry

What happens to iron sulphide when heated an what happens to iron when heated?

80. ## Biology

Physicians often want to know the glucose and lipid levels in a patient's blood and whether proteins are present in a patient's urine. What might this information show about an individuals health?

81. ## math

how do I solve these? (Tan^2ө)(Cos^2ө)+ (cot^2ө)(sin^2ө) The answer is supposed to be one but I don't know how to get it. 9sec^2ө - 5 tan^2ө The answer is supposed to be 5+4sec^2ө

82. ## Chemistry/Dimensional Analysis

The EPa detection limit for phosphate in water samples is 0.0450 milligrams per liter. Can phosphate be detected if 55.0 nanograms are found in 500.0 mL of solution? Show your calculations and explain.

83. ## Physics - I'm really, really lost

A plane tries to head away from an airport at 500km/h[N], but finds that its true velocity is 450km/h[N35degreesE] due to headwinds. What is the velocity of the wind? I'm supposed to be using components, so for N-S I used 500+450sin(55 which got me 868.6

84. ## CRT205

Do you find my answers after the piece of the article to be correct? Do you think my argument is, in fact, and argument? Clearly sheer numbers do not always impress us. It is unlikely, for example, that many Americans *Note: This essay borrows very heavily

85. ## Physics

How far does a photon (light) move in one nm in units of feet?

86. ## chemistry

Solutions that have large amounts of solute are___ solutions that have small amounts of solute are ___

87. ## organic chemistry

explain why a thioester absorbs at a lower frequency than an ester in IR spectroscopy. Use inductive and resonance arguments in your explanation.

88. ## history

one more question. would medieval knights have fulfilled the idea of a well-rounded man? and would men of the middle ages have agreed with the major concern of a prince is to do anything to protect the stability of the country, even if it is harming the

The Layers I have walked through many lives, some of them my own, and I am not who I was, though some principle of being abides, from which I struggle not to stray. When I look behind, as I am compelled to look before I can gather strength to proceed on my

A plane tries to head away from an airport at 500km/h[N], but finds that its true velocity is 450km/h[N35degreesE] due to headwinds. What is the velocity of the wind? I'm supposed to be using components, so for N-S I used 500+450sin(55 which got me 868.6

91. ## Literature

Who would be watching whom in Mary Shelley's "Frankenstein"?

92. ## Physics

How large is the current U.S. depth and the trade deficit in exponential notation?

93. ## math

what is the absolute value of - I 4 I ?

94. ## To: Troyer0269 - Sci245

I've removed both of your science posts. Please repost when you can tell us what you've done so far to fulfill these complex assignments and where you specifically need our help.

95. ## Social Studies

What political party controls California? The nation?

96. ## math

An Engineer is designing a bolt to fit a new machine. The bolt was the shape of a hexagon with a cymetrical hole in its center. The greatest distance across the bolt is 1.25cm, and the depth of 0.5cm. The diameter of the whole is 0.75cm while each side of

97. ## To Happy --

Please repost your math question -- and remove Ms. Sue's and my screen names from YOUR NAME'S space. Thanks. =)

98. ## psychology

What is the difference between absolute continuity and differential continuity?

99. ## math

how do I solve this? (cos ө+1)/ (cos ө - 1) The answer is supposed to be: (1 + sec ө)/ (1- sec ө)

100. ## Social Studies

In what ways did new Amsterdam have great diversity?

101. ## SOCIAL STUDIES

HOW DID MARTIN LUTHER KING AFFECT HISTORY

102. ## resistant materials

What is pine?

103. ## Physics

can a virtual image be projected on a screen? thanks :)

104. ## history-renaissance/middle ages

How were women viewed in the medieval times? What would medieval men have said about Petrarch's (poet) view on women? thanks!

105. ## physics

I did a lab on refraction through water and my index of refraction was way off and I don't understand why? I did the experiment just as I was told but my results were still way off.

106. ## Literature question

what does intent mean for a poem?

107. ## geology

Can you answer this please? What kind of climate coincides with the old Cotton Belt in the United States? How would you characterize it? The U.S. Corn Belt coincides approximately with Dfa climate, which is assigned what name in the North American climate

108. ## math help

You recently started the paper work for your new homeand you were just notified you can move in , in t0 weeks.You then decide to hire a moving company,but are unsure which company to choose.You search on line and are interestted in contacting 2 companies,

109. ## religion

what are the cultural and societal influences that have made Hinduism vital to the region in which it originated?

110. ## English

Why is religion an excuse for war instead of an actual cause? Why do people in the war use religion to justify themselves?

111. ## math

for what values of x, where a is a positive real number, is |x-a| = |x|-a why?

112. ## math

if f(x)= x+2, find the equation of the function F obtained by stretching the function f vertically by a factor of 2 and compressing the function horizontally by a factor of 2, followed by a translation of 1/2 horizontally and -3 vertically. the equation

113. ## Math

Abdul wants to lease an apartment for 5 years. how much money would he have paid at the end of 5 years if he pays a \$400 deposit and a \$525 a month in rent?

114. ## Algebra 2

Can someone please assist me with this? (9/49)^(-3/2) I do this thingy 1/(9/49)^(3/2) Then I do this thingy (49/9)^(3/2) Then I do this thingy (Square Root of (49/9))^3 I'm now lost...

115. ## dynamics

Find the mass center of a cylinder with height L and a hemisphere glued to the top with radius R. L=2R. The cylinder is standing up on its bottom end with hemisphere on top. Im so lost on this and cant use the formula to work.

116. ## Child Care

You overhear a group of children saying, "Girls can't be truck drivers." The most appropriate response is to A. use the opportunity to engage them in a discussion. B. ignore them: kids will be kids. C. redirect them to another activity. D. stage a

117. ## humanities/social studies

What does "The end justifies the means" means?

118. ## calculus

solve what is the limit x->(pi/4) (1-tanx)/(sinx-cosx)

What is market size? How to calculate it? Thanks!

120. ## math

in the examples of a computerized drilling machine that were presented in your reading material, downward movement of the drill bit toward the metal plate was in the

121. ## Biochemistry

Could someone please explain to me what Lineweaver Burk plot is trying to show? I know the definitions, and I know it represents the Michaelis-Menten equation, but I just need to know what it MEANS in simple English. Thanks!

122. ## algebra 1a

x+4y=2(1) x=3-4y(2)

123. ## fitness

after looking at RPE's how well does it correlate with actual percent of maqx HR and pace?

124. ## chemistry

What happens if you heat jic and iron together? what happens if you heat jic and iron sulphide together/

125. ## Literature

I have a question. I need 10 important dates on Walt Whitman if the teacher wants dates and some of the dates only have years. Does the years include dates ? For example: 1823 Whitman's father moves family to Brooklyn I can't find the date so should I just

126. ## math

if the answer is "start at (0,0) and move 3 units to the right, " what is the question?

127. ## Poetry

Please give feedback on the below acrostic poems. I am in 9th grade so base it off of that. Follow me Over the rainbow Outside reality Towards the stars Sprint towards happiness Taciturn smiles whisk onto faces (or tackle fears or trust the path)

128. ## English

Why is religion sometimes not the cause of war?

129. ## English Ms. Sue

Why is disharmony sometimes not the main cause of War?

130. ## college

How does Planned Parenthood fund their programs?

131. ## psychology

what causes you to be nervous even if you are good at what you are doing?

132. ## English (Ms. Sue)

How was self righteousness demonstrated in the war? How was disharmony demonstrated in the war?

133. ## pre algebra

x2(xy3)2+y2(x2y2)2

134. ## English

Why is fear the main cause of war? Need at least 3 to 4 examples on why it is?

135. ## Math

Find the domain and range of the functon: f(x)=1/2 |x-2|

136. ## U.S. History

Was Brown v. Board of Education the most important event in breaking down the legal foundations of the Jim Crow system? I want to argue yes, but I can't think of anything creative, only things that are obvious. Any ideas?

137. ## English

Did Joe DiMaggio set at least 2 records? What records did Joe DiMaggio set? I need at least 2 records please? Please Help!! Thanks!!

asked by SMILEY (I NEED MS.SUE OR WRITEACHER!!) HELP!!
138. ## algebra need help

Evaluate each expression. 3x^2-2x+1 if x=5 3a^2b^3 if a=2, b=-3

139. ## Math

what is scale inteval

140. ## English

I need to do reasearch on "A Raisin in the Sun" and I'm having trouble answering this question: What was the status of African-Americans in the late 1950s? Why did they come to the North from the South and what they experienced when they got here? Include

142. ## misc

is there any way to dye your hair without waiting so many hours i have asked before and GuruBlue told me about shampoo and food coloring which takes 8-12 hours. i was wondering if there was a quicker way and with what? thanks -MC

143. ## math/ algebra

simplify the expression 5.6n-(4-2.5n) 2x^2-3-(4x^2-6) x+(2x-2)-(4y+3)

144. ## Math

what is 13 1/2 - 11 5/16?

145. ## science

What is the Rf value for DDT pesticide?

146. ## psychology

what is an example of the relationship between sensory adaption and negative adaption?

147. ## space

how were stars made? by claire

148. ## ecology

what is it called when birds waterproof their feathers by rubbing oil from body glands onto their feathers