# Questions Asked onJanuary 28, 2009

1. ## Physics

A 2.0 kg mass starts from rest and slides down an inclined plane 8.0 X 10^-1 m long in .50s. what net force is acting on the mass along the incline. I have no idea how to do this I don't know why they just didn't say .8m the back of the book says 13 N down

2. ## SCIENCE!!

what are two examples of these four types of systems? Physical systems designed by people Naturally occuring physical systems Social Systems that I am a part of Naturally occuring social systems

3. ## chemistry naming

are these names correct? i'm not sure if i did the anion/cation right.. ***numbers are subscripts 1. Rb[AgF4]= Rubidium tetrafluoroargentate 2. [Ir(CO)Cl(PPh3)2] = 3. [Co(en)2CO3]Cl= bisethylenediamine tricarbonyl cobalt (I) chloride 4. Cr(H20)3Br3=

4. ## science

According to the rock cycle, which of the following transitions are possible? Assume an unlimited number of steps. A. An intrusive igneous rock becomes a sedimentary rock. B. A sedimentary rock becomes soil. C. A metamorphic rock becomes an extrusive

5. ## physics

A 5.0 kg bucket of water is raised form a well by a rope. If the upward acceleratiopn of the bucket is 3.0 m/s^2 find the force exerted by the rope on the bucket of water what exactly do i do here? 3.0 m/s^2 upward? is this the Fn? I have no idea how to do

6. ## math

In standard position, an angle of 7pi/3 radians has the same terminal side as an angle of? A)-420 B)120 C)60 D)625

7. ## Geometry

Angle JKL is congruent to angle MNP, KL= 21x - 2, NP = 20x, LJ = 15x, PM = 13x + 4. Find LJ. I don't understand how to do it! Please, help! :)

8. ## College Statistics 2

I saw that this was already answered but I can't find it if anyone knows, can you point me in the right direction? A recent poll of 700 people who work indoors found that 278 of them smoke.If the researchers want to be 98% confident of thier results to

9. ## Physics

A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic fiction between the box and ramp. I'm not exactly sure what to do here I know the formulas are uk = Fk/Fn Us = Fs, max/Fn not exactly sure how to

10. ## Spelling

analogy flower is to rose as tree is to what?

11. ## Physics

please check this the Greek letter delta indicates a(n) A. difference or change b. sum or total c. direct proportion d. inverse proportion i chose A?

12. ## Math Geometry

A triangle has vertices P(a,b), Q(c,d), and R(e,f). You are asked to prove that the image triangle angle P'Q'R' of triangle angle PQR after reflection across the y-axis is congruent to the preimage. What coordinates should you use for the vertices of

13. ## Physics

these are practice questions that i have the answer to, but i don't know how to solve them: 1.A human hair is approximately 50um in diameter. Express this diameter in meters. 2. if a radio has a period of 1us, what is the wave's period in sesconds? 3. A

14. ## Pre-calculus

Find the first three iterates of the function f(z)=z^2+i for Zo=2+3i Is my answer right? 2+3i -2-2i 2+3i

15. ## History

How did the Chernobyl disaster affect the U.S? Did it at all?

16. ## math

Charlie wants to buy a \$900 TV in 9 months. How much should he invest now at 17% simple interest to have the money in 9 months?

17. ## science

a material that reduces the flow of heat by conduction, convection, and radiation is a. a solar collector b. a conductor c. and insulator, or d. condensation

18. ## history

Ok i am having trouble with my world history homework questions........Please HELPPPP!!!!!!!!!!!!!!!!!? Ok these are the three questions i am having trouble with: 1. What are some of te characteristics of the "Renaissance man" and "Renaissance woman"? 2.

19. ## Chemistry

Vinegar is 5% acetic acid. If the density of household vinegar is approximately 1.00 g/mL, how many grams of acetic acid are contained in 10.0 mL of vinegar? So I started out with 10.0 mL of HC2H3O2 then multiplied by 1.00g/1mL. What do I do next? Is it

20. ## chemistry

Between HF and H2O, which one has the greater intermolecular force? i know they both exhibit hydrogen-bonding, but which one is greater? thanks

21. ## Biology

Why is it difficult to convert miles to yards or feet?

22. ## communication processing

How are men’s and women’s speech traits associated with power and status? What situations or purposes tend to elicit these traits?

23. ## chemistry

RE: Le Chatelier's principle. this was the whole question i was given. Write a short account of around 250 words in total, with reference to Le Chatelier’s principle, in which you explain the following: (i) The effect on the equilibrium yield of nitric

24. ## Science

which is more dense, cold freshwater or warm seawater? why?

25. ## math

i have 5 coins, penny, nickel,dime,quarter and a loonie. Ho many different amounts of money could i pay using any combinations of these coins?

How can a certain narrative show originality? I have to write an essay about how the story we read in class narrative shows originality...

27. ## Pre-calculus

Does Sin^-1(-x)=-Sinx? Is it true or false and explain.

28. ## Science

What is the arrangement of the objects in the universe from largest to smallest

29. ## physics

The diameters of Earth and the Sun are approximately 1.3 107 m and 1.4 109 m respectively, and the average Sun-Earth distance is 1.5 1011 m. Consider a scale model of the solar system, where Earth is represented by a peppercorn 2.3 mm in diameter.

30. ## spanish sra jmcgin

hi i have a spanish essay draft to write can I scan and email you or someone the assignment it is half a page in spanish. this way you will know what the assignment is and hopefully can review my draft. it is due tomorrow

31. ## Anatomy and Physiology

a 73 year old woman suffers a severe cerebral hemorrhage after minor trauma. Blood work reveals that her blood clotting ability is impaired. Disease of which abdominal organ may contrbute to this? Why?

32. ## Math

Simplify the exponential expression. Assume the variables represent nonzero real numbers. (2^-1 x^-5 y^-5)^-2 (2x^-2 y^4)^-2(4x^-2 y^4)^0 ______________________________________ (2x^-5 y^-5)^2 the line by the way means to divide. i have no idea how to solve

33. ## Physics

i have the answers to these i just need explanations; steps on how to do them 1. Heather and Mathew walk with an average velocity of 0.98 m/s eastward. If it takes them 34 min to walk to the store, what is their displacement? 2.If Joe rides his bicycle in

bob accidently falls out of a helicopter that is traveling horizonally at 160m/s. he plunges into the water below 4s later. assuming there is no air resistance, what is the horizontal distance he travels while falling

35. ## Chemistry

How would you balance this equation: CuS + KCl = ? Can you explain.

36. ## Pre-calculus

Find the values of x in the interval 0

37. ## English

this question is for the short story lamb to the slaughter there are many dramatic irony in the text such as ??? what does dramatic irony mean?? can you please give me one example thanyou

38. ## physics

A vector has components Ax = 44 m and Ay = 30 m. Find the length of the vector vector A and the angle it makes with the x axis. in meters and in degrees

39. ## Science

Why do red fish look black at ocean water depths greater than about 10 m?

40. ## hsm 220

identify similarities and differences between intrinsic and extrinsic motivation. Provide at least five short examples of both as they apply to an organizational setting.

41. ## Math

In a bottling company, a machine can fill a 2-liter (L) bottle in 0.5 seconds and move the next bottle into place in 0.1 s. How many 2-l bottles can be filled by the machine in 2 h?

42. ## english

What did Mr. St JOhn inform Jane about?

43. ## Math - Derivatives

How would one take the derivative of "f(x)^[g(x)]? Is there a formula I can follow to differentiate functions like that?

44. ## Electricity

Lightning occurs when charges jump the gap between the ----- cloud and the ----- ground? Lightning can go to one of three places. It can: a.________________ b._________________ c._________________ The energy caused by the flow of particles with negative

45. ## trigonometry

1) show that: 1-cos2t divided by sin2t= TANt 2) show that: 1-(cos2t divided by (cos x cos)t)= (TAN x TAN)t

46. ## U.S.History

how did the issue of Gold, Glory, and God influence the economic gain and glory for all individuals involved.[involved in the colonizing activities of Spain and England] i really, really need help with this..i have been trying to find the answer for this

What kind of a tissue does photosynthesis take place in?

48. ## Biology

Two samples of DNA have the same melting point and density. Does this prove that they are from the same species? Explain clearly and back up your reasons. I read in my notes and all it said was that DNA species isolated from different organisms have

49. ## FRENCH

I am so sorry, I know I have asked that question before but I still do not see the difference between those two sentences. In my book it says: "Nous avons besoin des nombres pour le commerce." and then it says: "Nous avons besoin de nombres pour désigner

50. ## Social Studies

How did the French and Indian War change Pennsylvania?

Would you capitalize (golden eagles) in this sentence? Do you recall the golden eagles in the forest?

wich one is the (SI) unit temperture? kelvin fahrenheit joules celsius thank you

53. ## Engish

How does the author of A Nation Apart By Simon on time com Elegant organize information to build his argument? Does he includes any counteragument? Why or why not? What kinds of statistics, graphs, or illustrations does the author include? In what ways do

54. ## Physics

How fast does a car have to accelerate to go from 10.0 m/s to 30 m/s in 125 meters?

55. ## AED

List five key educational issues related to the First Amendment from your reading. Briefly describe how each issue impacts the classroom. Give intext citations and references for sources used in this paper. Please attach. Paragraphs are indented 5 spaces

56. ## English

How can a certain narrative show originality? I have to write an essay about how the story we read in class narrative shows originality...

57. ## World literature

I nedd to find 15 reasons why people like world literature. Please help me!!! im new in high school.

58. ## Physics

please check my answers, they are Capitalized 1. the SI base unite used to measure mass is the a. meter b. second. C. kilogram d. liter 2. how does a scientist reudce the frequency of human error and minimize a lack of accuracy? a. take repeated

59. ## english

What does these phrases mean? Very confused.This is about Spielberg. 1. He makes movies when marketing controls the industry 2. Mystery offrs promises instead of threat 3. In his best films he tapped into dreams fashioned by our better natures appriciate

hi, i am haveing prob;ems with my math its called solving the quadratic equation but my teacher is not really giving me the attention i need to pass the class but will you help me please

61. ## english

Hey Guys! It's confused english here! I was wondering if you could answer this question. In this sentence - what would rubbish be used as? A noun, verb, or adjective? Sue Ellen was talking rubbish when she told people about the story. Please answer this

62. ## Chemistry

Why do we store very reactive metals such as potassium and sodium in oil? What kind of oil is it?

63. ## geometry

each line segment in a polygon is called a what?

64. ## Math

What is the only quadalateral to have a 45 degree angle?

65. ## Algebra

GIven any positive integers, show that at least two must exist whose sum or difference is divisible by 10.

66. ## College Prep

Scenerio: Two days ago your manager phoned and said he would like to plan a field contact in order to evaluate your promotional deals and marketing skills. He will meet you at Kroger's, your top account, at 2:00 p.m. You immediatly got antsy because you

67. ## Math

Train A and Train B are traveling towards each other but are 2,100 miles apart. Train A is traveling at 50 mph and Train B is traveling at 35 mph. When will they collide?

68. ## english

When does the sentence "By the time he reached the seventeenth floor, which seemed to take forever, he was winded and gasping?" use dependent, independent, and adjective clauses?

69. ## social studys

where did the three fifth compromise take place?

70. ## math

find all positive integers for 15x+18y=17.

71. ## home economics

Need help looking up data on unemployment from 1998-2008 yearly data and 2008 monthly data. Also finding gdp defliator form 1998-2008 yearly and quantity

72. ## English

When writing about movie titles, are they underlined, italicised (sp?), or put in quotes? Thanks.

73. ## geometry

in a translation, how can you use the relationship between some points and their images to find the images of other points?

74. ## sra jmcguin

I'm supposed to do a draft essay on helping a high school senior with improving his grades. 3 recommendation as his friend and there explanations, along with introduction and conclusion sentences. Only one paragraph. ths is the draft any suggestions are

Which object is most likely to be about 4cm long? a textbook a pair of scissors a cricket a new crayon

76. ## medicine

Does the AMA ethics poinion mention encryption as a technique for security?

77. ## Physics - Damon

Hey Damon, I posted this question a while back and you helped me figure out the first part of it. Assume that radio waves have a frequency of 6.0 × 10^7 Hz, and that the radio receiver is 25 m above the surface of the sea. What is the smallest angle theta

78. ## english

writing sentences and paragraphs

79. ## Astronomy

Why is the time at which leo transits the meridian different for mexico city and chicago?

80. ## math

a machine can fill a 2 liter bottle in 0.5 second and move the next bottle in place in 0.1 second how many 2 liter can be filed by the machine in 2 hours

81. ## Math - exponential

How many inflection points does f(x) = xe^(x^(-2)) have? -- is there one inflection point? and does this apply to all functions? How many relative max or min does the function, f(x) = xe^(x^2) have? -- it only has 1 relative min, am i correct?

82. ## Health and human services

Nine major forms of benefits/services in the U.S. social welfare system? Choose three out of the nine major forms of benefits/services in the U.S. social welfare system for each of the three; give an example of when you believe that benefit or service

83. ## Physics

i have just started physics, can someone please show me step by step how to do this: The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits. thank you for your help

84. ## English

Nothing seems at first sight less important than the outward form of human actions, yet there is nothing upon which men set more store; they grow used to everything except to living in a so- ciety which has not their own manners. The influence of the

85. ## Pysch

How do various behaviors of social dominance and courtship display affect the evolutionary process? What other behaviors might have an impact on evolution? Provide specific examples. Can someone explain it better to me plz

86. ## Electricity

The energy caused by the flow of particles with negative electrical charge is called?

87. ## Grammar (clauses)

How does the sentence "By the time he reached the seventeenth floor, which seemed to take forever, he was winded and gasping?" use dependent, independent, and adjective clauses?

88. ## psychology

Is their a certain format for article reviews, possibly in APA format? If so, where can I find an example?

89. ## history

Was Westernization the best policy for China, Japan, Egypt, and the Ottoman Empire? i don't need a direct answer, just links to websites that could help me out with this. google didn't come up with anything for me.

90. ## sciencs

i have to wright a five paragraph essay about erosion i need some suggestions on what to wright or how i should i wright it because its confusing to me i have no idea how to wright or format a 5 paragraph essay

91. ## computing

indentify 3 aspects of a good HCI

92. ## Math - Derivatives

I find it difficult to take the derivative of something that has a constant base with a variable as an exponent...and simplify it... PLEASE HELP ME! f(x) = e^(x^(-1)) f'(x) = -1(e^(x^(-2))e^(x^(-1)) f'(x) = -e^(x^(-2))e^(x^(-1)) ????? and... f(x) = 3^x

93. ## Chemistry-help needed

1) Does Alumnium react with steam to give metal oxide and hydrogen gas? 2) Does Aluminium react with dilute hydrochloric acid? What are the products? 3) Will Tin react with dilute hydrochloric acid to give tin(II)chloride and hydrogen gas?

94. ## electric fields, showed work

imagine sitting a distance r from a charge q. you measure both the electric field and electric potential. now imagine that the charge is halved and you move three time as far away. you measure the field and potential again. b what factor has the electric

95. ## SCIENCE

WHAT IS THE DIFFERENCE BETWEEN THE ARRANGEMENT OF A CONSTELLATION AND A GALAXY?

96. ## geometry

what geometry figure begins and ends in the same point

97. ## Science

"Blow up a balloon and tie it up. Leave it for a few days. After a few days, the balloon becomes smaller.Why?" The answer given is that the air particles diffuse out of the balloon. Can you please explain the answer? I understand that diffusion involves

98. ## Pre Calc

If the equation is y = -x^2 + 6/2 Would it become y = x^2 + 3? Or would it be y = x^2/2 + 3? Thanks.

99. ## communication processing

I just need some type of example I am so lose in this class. How are men’s and women’s speech traits associated with power and status? What situations or purposes tend to elicit these traits?

100. ## the novel "Ordinary People" by Judith Guest

Has anybody read this book? I have a few questions to ask, I've read the book but forgotten a few things reply ASAP!

101. ## math

simplify these expressions as fractions: (26/27) + (35/4) (26/27) x (35/4) (3x/2y^2) x (2yx/x^2) and what are the restrictions of x, y? (3x^y/zw) + (tx^2y^3w^4/z) and what are the restrictions for he variables x, y, z, t, w to make the expression well

Which item has the capacity of about 5 milliliters< a juice glass or soda can

103. ## HELP!

What does these phrases mean? Very confused.This is about Spielberg. 1. He makes movies when marketing controls the industry 2. Mystery offrs promises instead of threat 3. In his best films he tapped into dreams fashioned by our better natures appriciate

104. ## Poem

Do you like the title of this poem? I created it myself does it sound ok. Were supposed to write about school. Getting Ready For School Breakfast, get dressed, fix hair, get dressed, fix hair, makeup, fix hair, makeup, blush, makeup, blush, brush teeth,

105. ## social studies

who speaks for the Executive Branch is it the senate?

106. ## social studies

other famous women in 177martha washington/mary ludwig hayes

107. ## Math

48cm = ___m 458cm + 47m + 55cm = ____cm

108. ## spanish

the daughter of sister is my

109. ## american literature

what does her basket full of linen white mean??

110. ## design a pyramid

how to design pyramit for school project

111. ## Physics - Damon - continued

I don't know where you got sin theta = .1 from?? Look if I use m = 0 and the formula I used then I get L = 500m when I do arctan(25/500) I get 2.86 degrees.

112. ## Science

What is the volume of a proton and an electron?

113. ## mat1033

Write the equation of the line that passes through the point (5, 4) and is perpendicular to y=2x-4

114. ## algebra

given any seven positive integers, show that at least two must exist whose sum or difference is divisible by 10.

115. ## math

my teacher gave us a question that says: compute the correlation coefficient (r) between pace of life and happiness. if peace of life is 4 and happiness is 2.2? how do i do that?

116. ## english

The antrcedent in the following sentence is (patients, doctors). Doctors should schedule more time for the patients so they do not spend much in the waiting room.

117. ## pebblebrook

How to Solve system of equations

118. ## HRM 240

has anyone ever heard of or experience a Real Job Preview (RJP)?

119. ## geometry

what has ends that don't meet

120. ## Writing

Where can I find information on the mobile audio & video industry?

121. ## computing

state 2 advantages of having modules in a library file

122. ## HRM 240

why would a company want to take out the personal effects on an interview?

123. ## math

|4x - 3| < 12 is equivalent to a. -9/4 < x < 15/4 b. -15/4 < x < 9/4 c. none of these d. -16/3 < x < 8/3 e. -8/3 < x < 16/3

124. ## home economics

what is physical housing?

125. ## history

what happened to government surplus under president harrison?