# Questions Asked onMarch 21, 2007

1. ## analytical chemistry

A sample is to be analyzed following a prescriptive quality assessment protocol with a detection limit for the method of 0.05ppm. The calibration curve relationship is S means= 0.276X (ppm analyte) Afield blank is spiked with the analyte to a concentration

2. ## law

what ways ae companies to be distinguished from partnership Thank you for using the Jiskha Homework Help Forum. Here is some information for you: 1. (Broken Link Removed) 2. (Broken Link Removed) 3. http://www.residual-rewards.com/business-types.html

3. ## Precal

How do you find range of theta values for a polar equation? Usually the range of theta is 0 to 2 pi radians (or 0 to 360 degrees). It could be defined for a wider range of angle, but 2 N pi + theta, with N any integer, is equivalent to theta in polar

4. ## Chemistry

A teacher prepares a saturated NaCli solution at 55 Degree C. What is the % by mass 9m/m0 of this solution? what is the concentration of this solution expressed in ppm? What is the molality of this solution? If the density of the solution is 1.07 g/ml,

5. ## English

I just finished reading "By the Waters of Babylon" by Stephen Vincent Benet and I have no idea what any of it means. I don't understand where the narrator came from (i mean from what country or state), what the metal is that the priests take from the

6. ## Science

What climate and topographical factors help reduce air pollution? Prevailing winds from the ocean, high frequency of rain and absence of high mountain ranges around an area help to reduce air pollution.

7. ## Project work

Hi, I have a project work on:" Investigating the importance of dating among adolescents." Can u plz help me out. Thx :-) These sites should get you started on your project. (Broken Link Removed) http://www.questia.com/PM.qst?a=o&d=5001778104

8. ## Math

Part 1. A stock is selling today for \$40 per share. At the end of the year, it pays a dividend of \$2 per share and sells for \$44. What is the total rate of return on the stock? What are the dividend yield and capital gains yield? Part 2. Suppose the

9. ## Real reverse Nominal Returns

You purchase 100 shares of stock for \$40 a share. The stock pays a \$2 per share dividend at year-end. What is the rate of return on your investment for these end-of-year stock prices? What is your real (inflation-adjusted) rated of return? Assume an

10. ## Chemistry

Propose a method for determining the specific heat, Cp, for a metal like sodium which reacts with water. Allow the sodium to equilibrate in a metal calorimeter filled with inert gas. Measure the equilibrium temperature

11. ## Chemistry

Propose a method for determining the specific heat, Cp, for a metal like sodium which reacts with water. You posted this question several times, and not just today. It has been answered. You will have to fill in the steps yourself. There are other possible

12. ## exponential and logarithmic graphs question

hi, i desperately need help solving this question: Find the values of A and k if the general equation of the graph shown is y=Ae^kx where the graph goes through the points (-1,-4) and (-2,-10) do i solve it using simultaneous equations? because i have

13. ## Chemistry

I am a bit lost as to how to go about answering this question. Any help will be appreciated. When 1.40g of hydrated magnesium sulphate is heated to constant mass, 0.68g of the anhydrous salt remains. Find the formula for the hydrated magnesium sulphate.

14. ## Algebra

I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO: what's the quadratic form of 1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to

15. ## physics

A 20.0kg block rests on a plane inclined at 20.0o to the horizontal. The coefficient of static friction is 0.250, and the coefficient of kinetic friction is 0.150. (a) What is the minimum magnitude of the force F, parallel to the plane that will prevent

16. ## English

What are the pros/cons of the short story/short poem in communicating ideas? It is short, and sticks in the mind. Crossing the Bar comes to my mind, I first heard it in Junior High School over fifty years ago. Poe's The Raven is another. O'Henry's story

17. ## English

Hi. I need help understanding the following sentence. "And yet--and yet--is it not perhaps to satisfy expectation that one falls into the tragic key in writing of desertness? The more you wish of it the more you get, and in the mean time lose much of

18. ## riddle

red. I rtyme with bed I am a color I am red Thank you for using the Jiskha Homework Help Forum. Here's the "key" to solving this kind of riddle. Walk through the alphabet rhyming with "bed." (ced, ded, fed, etc.) red

19. ## English

Hi. I need help understanding the following sentence. "And yet--and yet--is it not perhaps to satisfy expectation that one falls into the tragic key in writing of desertness? The more you wish of it the more you get, and in the mean time lose much of

20. ## math

Okay, so there is circle S. There are two tangents of this circle that intersect, so it almost looks like a cone? the angle of the intersected tangents is 20º. The arc that the "cone" intersects is 4x. I have to figure out what X is. THe answer is 110 but

21. ## social studies

Thank you for using the Jiskha Homework Help Forum. Here are some links on reconstruction and the Civil War: 1. http://en.wikipedia.org/wiki/Main_Page 2. (Broken Link Removed) 3. http://www.mrburnett.net/civilwar.html 4.

22. ## algebratic propertys

Can someone help me solve these m1=(3x+20) m3=5x-16 (Vertical Angles are Congruent) a.) _____ = (5x - 16) (Substitution) b.) -2x + 20 = _____ (Subtraction Prop. of Equality) c.) -2x = _____ (Subtraction Prop. of Equality) d.) x = _____ (Division Prop. of

23. ## English

Does rhetoric using threats and bribery make for a more convincing point of view? No. There's an old saying, and it applies to actions and writing, too: http://www.bartleby.com/59/3/youcancatchm.html =) I need a simile for "her eyes are as big as her

24. ## Music

I am being homeschooled and am having a tough time with my music course. The teacher doesn't really want to help me maybe you can. I need to write a short fugue with 4 voices in the key of g minor and i need to include any necessary accidentals. Thank you

25. ## English

Hello. Can someone clarify this sentence for me? "I, who must have drunk of it in my twice seven years' wanderings, am assured that it is worth while." Does it mean that "I drank it twice over the course of 7 years?" Or "I drank it (once), during which

26. ## One for drwls

Thank you for answering my question. Can you steer me to making a quadratic from 1/4(x+3)^2-4 Then I can get the intercepts. Thanks Just multiply it out to put it in the standard form, ax^2 + b^2 + c (1/4)(x+3)^2-4 = (1/4)(x^2 + 6x + 9) -4 = (1/4)x^2 +

27. ## Physics

A uniform plank of length 5.5 m and weight 219 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 447 N walk on the overhanging part of the plank before

28. ## Social Studies

Education is a privilege grantes to some, not a right granted to all. Do you agree or disagree and why? Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own.

29. ## English

Last one for today! (Thanks for all the help guys) Do these sentences mean the same? "Wheeling to their stations in the sky, the stars make the poor world-fret of no account." And "Wheeling to their stations in the sky, the stars make the world forget

30. ## Macroeconomics

Since all economies are faced with scarcity, how might nations attempt to minimize the human hardship associated with scarcity? By setting up some system that transfers resources from the haves to the havenots. E.g., issue food stamps, build low-income

31. ## Maths

John leaves point A to travel 360klm and Joanne leaves point A 40 mins later and her cars speed is 18klm per hour faster than John's but they both arrive at the same time. What is their respective speeds? The both travel the same distance.

32. ## Anatomy & Physiology

How do the gas laws (Daltons, Boyles and Henrys)apply to the respiratory processes? I will be happy to critique your thinking on this. I know Dalton's Law is the law of partial pressures, Boyle's law is the law for a fixed mass of ideal gas at fixed

33. ## Math

Real Reverse Nominal Returns You purchase 100 shares of stock for \$40 a share. The stock pays a \$2 per share dividend at year-end. What is the rate of return on your investment for these end-of-year stock prices? What is your real (inflation-adjusted)

34. ## Physics

A bowling ball encounters a 0.76m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 3.80m/s at the

35. ## Computer

I am finishing up an assignment in Microsoft Access and am having trouble understanding how to make this formula. The question states to write a query that shows each customer (Id, first and last name) along with the total amount of revenue for each

36. ## Anatomy-bobpursley

How do the gas laws (Daltons, Boyles and Henrys)apply to the respiratory processes? Anatomy & Physiology - bobpursley, Wednesday, March 21, 2007 at 11:51am I will be happy to critique your thinking on this. Anatomy & Physiology - Aletha, Wednesday, March

37. ## Physics

Equate the increase in potential energy at the higher elevation, M g H, to the decrease in kinetic energy. Make sure you include the kinetic energy of rotation, which is (1/2) I w^2. For a sphere of radius R, V = R w and I =(2/5) I R^2 Therefore

38. ## Physics

A woman stands at the center of a platform. The woman and the platform rotate with an angular speed of 4.00 rad/s. Friction is negligible. Her arms are outstreched, and she is holding a dumbbell in each hand. In this position the total moment of inertia of

39. ## history

how is taiwan linked to china today Taiwan used to be named Formosa and was part of what we now call mainland China. Here is a collection of websites that include this history:

asked by world history
40. ## Math

Real versus Nominal Returns. Do you think it is possible for risk-free Treasury bills to offer a negative nominal interest rate? Might they offer a negative real expected rate of return? For conventional treasuries, the answer to the first question is no.

41. ## Math

Real Versus Nominal Returns. The Costaguanan stock market provided a rate of return of 95 percent. The inflation rate in Costaguana during the year was 80 percent. In the United States, in contrast, the stock market return was only 12 percent, but the

42. ## Physics

San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, which can rotate about a vertical axis through its center. Then, two people push perpendicularly on the car, one

43. ## jewelry markings

I just purchased a piece of costume jewelry. It has 5 large, rectangular stones with large links between each stone. The clasp has what appears to be 885 with a fish symbol behind it. Any ideas on what this means? These sites might give you some

44. ## physics

A spring-loaded toy dart is used to shoot a dart straight up in the air, and the dart reaches a maximum height of 16m. The same dart is shot straight up a second time from the same gun, but this time the spring is compressed only half as far before firing.

45. ## URGENT!!!!!! science.....hurry!!!! please

The elements from which of the following groups are most liekly to react with potassium(K)? A. Group 2 B. Group 7 C. Group 13 D. Group 17 I think it is either A or D. Look at your periodic table. www.webelements.com K is a metal. It will react with

46. ## math

if a loan is given for 2,500 for 1 year and the interest charged is 275 dollars what is the interest rate on the loan? how do I go about solving this do I subtract the 275 from 2500. Interest=Principal*Rate*Time 275=2500(rate)(1) rate=275/2500 =.11 so the

asked by patti help
47. ## Science....HURRY! Please respond ASAP!!!!

0=X=0 The model above shows how an unidentified element, X, forms covalent bonds with oxygen. In which group on the periodic table does Element X most likely belong? A. Group 6 B. Group 12 C. Group 14 D. Group 18 I think it is either C or D. So X must be a

48. ## English

what is a good historical fiction book for an 8th grade reader? There are several good historical fiction books listed in these sites. http://www.education-world.com/summer_reading/8th_grade.shtml http://www.ci.torrance.ca.us/Library/11496.htm I can

asked by betsy miller
49. ## social studies

Who founded the city of Buffalo, New York? Check these sites. http://history.buffalonet.org/1801.html http://en.wikipedia.org/wiki/History_of_Buffalo,_New_York

50. ## HELP! EMERGENCY!!!

The elements of which of these groups on the periodic table are most resistant to forming compounds? A. Group 1 B. Group 9 C. Group 14 D. Group 17 Look on your periodic table at the noble elements also referred to as the inert gases. If you don't have a

51. ## science

members of one species in a area are called http://en.wikipedia.org/wiki/Deme_(biology)

52. ## math,algebra,correction

Science and medicine. Find the time required for an object to fall to the ground from a building that is 1400 ft high. using the formula : t = (1)/(4) radical (s) My answer: t = 9.35 (but i don't know how to word it if minutes all or minutes and seconds

53. ## math,correction

Simplify by combining like terms. Problem #32 radical (63) - 2 radical (28) + 5 radical (7) My answer: 4radical(7) Problem #50 Find the perimeter of the triangle shown in the figure. leg 1 = radical (5) - radical (3) leg 2= radical (5) + radical (3)

54. ## science

A student prepared a .10M solution of acidic acid. Acidic acid has a Ka of 1.75 x 10-3. What are the hydronium ion concentration and the PH of the solution? I think the PH is 1.76 because I hit -log(1.75 x 10-3) on my calculator and that's what I got

55. ## math,correction

problem #50 Perform the indicated division. Rationalize the denominator if necessary. Then simplify each radical expression. (18+radical (567))/(9) My answer: 2+ radical (7) or 2radical (7) Problem # 52 (-9-radical(108))/(3) My answer: -3-2radical(3)

56. ## math,correction

Find the area of the rectangle shown in the figure. length = radical (3) + radical (5) width = radical (3) + radical (5) My answer: a= 8 + 2 radical (15) or a = 15.75 agree, you seem to be able to do these should i leave it as the radical form or the

57. ## gcse science

who invented the theory of relativity? Check this site. http://en.wikipedia.org/wiki/Theory_of_relativity thank you!

58. ## physics

A pendulum clock that works perfectly on Earth is taken to the Moon. (a)Does it run fast or slow there? (b) if the clock is started at 12:00:00 am, what will it read after one Earth day(24hrs)? Assume that the free-fall acceleration on the Moon is 1.63

59. ## Physics Stuff

Ocean waves are traveling to the east at 4 m/s with a distance of 20m between crests. With what frequency do the waves hit the front of a boat (a) when the boat is at anchor and (b) when the boat is moving westward at 1 m/s? frequency= distance/velocity

60. ## Physics Problem

A 3.00-kg mass is fastened to a light spring that passes over a pulley. They pulley is frictionless, and its inertia may be neglected. The mass is released from rest when the spring is unstretched. If the mass drops 10.0cm before stopping, find (a) the

61. ## History!!!!!

so i have to write a closing argument paper about the whole thing with the Numberburg trial and I have to write a closing statement acting as a lawyer trying to defend and say the germans should of not been prosicuted so go the opposite and most people

62. ## chemistry

Can somebody please check my answer for this one? Calculate the number of atoms for the following: 2 mol Na atoms I got 1.2*10^24 Correct. twice avagradro's number. Thank you!

63. ## math

if a speedomter reads in lm per hour and the legal speed limit is 55mi/h and you want to know how fast she can drive ? would I multiply the 55 x 6 to get km Do you mean that it reads in km per hour? I never heard of an lm per hour. Why would you multiply

asked by patti help
64. ## chem

Will someone help me with this problem, please? Calculate the mass in grams of 1.20*10^24 molecules of CO2. Well, convert it to moles of CO2. number moles= 1.2*1024/avagnumber Now, you take the molecular mass of CO2 (12 + 2*16) and multiply that by the

65. ## Math

Real Versus Nominal Returns. The Costaguanan stock market provided a rate of return of 95 percent. The inflation rate in Costaguana during the year was 80 percent. In the United States, in contrast, the stock market return was only 12 percent, but the

66. ## Chemistry

Can someone check my answers? Thanks. 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be important that all of you collect your samples on the same day and do the alkalinity tests within 24 hours? Acid

67. ## Math

I still do not understand Today was my first day learning how to add 3 sets of fractions with different denominators and I did not get it. I need help with the following please. 1/8 + 1/2 + 3/4 = Waht is the LCM? Answer 8. So convert all the other

68. ## Social Studies

how do you make a riddle? Thank you for using the Jiskha Homework Help Forum. There actually is a Website for how to make a riddle: 1. http://www.catb.org/~esr/riddle-poems.html This is an answer from Jiskha earlier: 2.

69. ## AP Gov't

reasons congress should be reformed. Are you asking about the personal scandals? campaign financing? forbidding filibustering? Please post your answers -- and we'll be glad to critique them. just in general. i was thinking more along the lines of the

70. ## Math

What is the square root of 12? 3.464 Well, that's true, but you could simplify it in radicals. The square root of 12 is the same as saying the square root of 3 times the square root of 4. The square root of 4 is plus or minus 2, so you could say (I wish I

71. ## algebra1

could you walk-through the steps to solving this problem because I am stuck; 3x-5(3x-7)=2(x+9)+45 Let me know if you have a question in any step. 3x-5(3x-7)=2(x+9)+45 3x-15x+35= 2x+18+45 -12x+35 = 2x+63 -35 -35 -12x= 2x +63-35 -12x= 2x +28 -2x -2x -12x-2x

72. ## Math

I still do not understand fractions?????? 2/3 + 1/3 + 5/6 = divide all of them first then add them up ???. I am still lost, can someone please help me. Ok. In your earlier question, there was talk of the LCM, the least common multiple. Whenever you add

73. ## geometry

what do I do to solve this problem? I don't know how to work it out, so could somone show me hoe to work it out. Please help! the lenght of a rectangular playing field is 5 ft less than twice its width.the perimeter is 230 ft,so what is the lenght and

74. ## chemistry

A student prepared a .10M solution of acidic acid. Acidic acid has a Ka of 1.75 x 10-3. What are the hydronium ion concentration and the PH of the solution? I think the PH is 1.76 because I hit -log(1.75 x 10-3) on my calculator and that's what I got

75. ## science and medicine

I am having some trouble working this out . Could you possibily show me how to work it out.Thank You! A bicyclist rode into the country for 5 h. In returning, his speed was 5 mi/h faster and the trip took 4 hours. What was his speed each way? Could somone

76. ## science and medicine

I don't have any idea how to solve this. Could someone show me the steps in solving this word problem? I am at a loss! Abus leaves a station at 1 pm., traveling west at a rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east

77. ## Music/Beatles

I'm an elementary school music teacher, and my 4th graders are learning "Sgt. Pepper's Lonely Hearts Club Band" as part of their spring program. We were rehearsing yesterday and one of them asked me who Billy Shears was. I'm clueless. I tried looking it up

78. ## business and finance

I need help in working this word problem out. I need help coming up with the answer because I have no idea what so ever of how to solve this. 850 douglas fir and ponderosa pines in a section of a forest brought by Watts Tree Company. Watts Trre Company

79. ## MATH

HOW DO I SOLVE A QUADRATIC EQUATION BY FACTORING? Do you have a specific one? You factor it in this form: (x-a)(x-b)=0 then both factors , x-a, and x-b can be set equal to zero, and then x=a, and x=b.

80. ## Algebra

I need help with my daughters homework. I know a little bit of algebra but it has been about 15 years since I have done it. She switched schools recently and there was a learning gap in the schools. The problem is: give the demensions of rectangles with

81. ## chem

help me i hev a lab You need to post a question with details about what yo don't understand.

82. ## Physics

I need help with this problem. A ceiling fan is turned on and a net torque of 2.0 Nm is applied to the blades. The blades have a total moment of inertia of 0.24 kgm2. What is the angular acceleration of the blades in rad/s2? The formula is well known:

83. ## science and medicine

I have no clue of how to solve this. Help!! Mesha leaves home at 9 am., bicycling ata rate of 24 mi/h. Two hours later, Jeffery leaves, driving at a rate of 48 mi/h.What time will Jeffery catch up with Mesha?

84. ## Chemistry check

Can someone check my answers? Thanks. 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be important that all of you collect your samples on the same day and do the alkalinity tests within 24 hours? Acid

85. ## Chem

Write the equation for dissocation of acetic acid in water: My Answer: CH2COOH + H2O H3O+ + CH3COO- Equation for hydrolysis of acetate anion in water: My Answer: CH3COO- + H2O CH3COOH + OH- Now, using the above formulas, I have to show how a buffer works

86. ## business and finance

Need some help with this. Ned recived a restaurant, including a 15% tip, the bill total was \$65.32, what was the bill before the 15% tip? \$55.52

87. ## geography

what is the nation's largest inland port, situated at the junction of 3 rivers? This answer surprised me, but several other web sites also confirm it. http://en.wikipedia.org/wiki/Huntington,_West_Virginia

88. ## Physics

Can someone please give me some insight on how to work this problem? A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 85 kg. A person pushes on the outer edge of one pane with a force of F = 63 N

89. ## history

its the name of an actor/actress lleewiaodmnac Try these: http://www.ssynth.co.uk/~gay/anagram.html http://www.unscramble.net =)

90. ## Career

What are the daily responsibilites for owning a auto detail shop? I think it would be easier to divide this up into 2 groups. 1) The daily responsibilities of owning any business. (Employees, scheduling, \$\$, handling customers, reviewing marketing plans,

91. ## Geo...Help plz. Urgent.

It is 11:00am at 68W. Using Standard time, calculate the Line of Longitude at 6:00pm.. Help plz. Thanks so much At 11 AM at longitude 68W (in Eastern Maritime Canada's Atlantic Time Zone), at 6 PM you would be 7 time zones (or about 105 degrees) to the

92. ## math

I tried many times this problem but it makes nonsense. Which statement is NOT true? 10+6x3-2divide2=27 10x6+3-2divide2=62 10-6+3x2divide2=8 10-6x3divide2+2=3 Without parentheses to specify the order of operation, there are many ways to interpret each of

93. ## math,help

Can someone help me understand the following in terms that i can understand because i've read the book,definitions i've done research and i am new with this and i still don't understand.The teacher is hopeless at explaining that's why i am here for help.

94. ## Com 120

I need to write a impact on a introduction to the story the case against chores

95. ## statistics

Statistics. The lowest temperature ever recorded in the state of Oregon was -54 F ( in Seneca, on February 10, 1933). The state’s record high temperature occurred in Pendleton on August 10, 1898, when it reached 119 F. What is the historical temperature

96. ## com120

I NEED TO WRITE THE TYPE OF INTRODUCTION USED IN THE STORY THE CASE AGAINST CHORES

97. ## Chemistry (3rd time I've posted this)

Can someone check my answers? I've posted this a couple times and no one has responded. Is no one responding because they're all right or what? 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be

98. ## math

(n-2)*180 =108n 180 n - 108 n = 360 72 n = 360 n = 5 drwls, I had totally misread the problem and thought it said (n-2)^180 =108n been working on it for almost an hour, trying Newton's method and all kinds of iteration. I really have to try to read the

asked by chris verwer
99. ## Math

Thanks a million to Amy who answered my question earlier today. I have been struggling with this. Amy, you must be a teacher and if you are not, you should be. You are the best. Hugs, hugs, hugs and big kiss. Andre

100. ## biology

The word step is misleading. http://biology.about.com/library/bltranslation.htm How many steps are there in translation? I've been searching and so far I have found a site that says that there are 5 steps, one that says 4 steps, and one that only has three

101. ## Chemistry

Gas X has a density of 2.60/L at STP. Determine the molar of this gas. Please show me the steps to solve this problem. thanks You just need the definition. One mol of a gas at STP occupies 22.4 L. You have the mass of 1 L. Just calculat the mass of 22.4 L.

102. ## physics

what's the area under a force-vs-time curve: momentum, impulse, or velocity? Impulse. (It happens to equal the change in momentum, as well) i thought so.. thanks for the clarification.

103. ## math function rule input/output

during a 10 hr train trip the distance you travel equals 45 miles per hour the number t of hours spent traveling The distance travelled is speed x time. Your question seems to be stated incorrectly. You say the travel time in the begining of the sentence

104. ## chemistry

Gas X has a density of 2.60g/L at STP. Determine the molar mass of this gas. Sorry there was some typos on the previous question. please show me again steps by steps. thank you =] Same answer. You just left the g off the density. One mole of ANY (ideal)