# Questions Asked onFebruary 26, 2007

1. ## RE: PHYSICS

A stationary block explodes into two pieces L and R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 2.0 kg, encounters a coefficient of kinetic friction µL = 0.40 and slides to a stop in

2. ## chemistry

what is the molecular geometry and bond angles of CF2Cl2? Is there any reason to suspect this won't be tetrahedral with bond angles of 109.5? The difference in electronegativity between F and Cl would be expected to alter the angles somewhat.

3. ## RE: PHYSICS

A man (weighing 915 N) stands on a long railroad flatcar (weighing 2805 N) as it rolls at 18.0 m/s in the positive direction of an x axis, with negligible friction. Then the man runs along the flatcar in the negative x direction at 40.00 m/s relative to

4. ## chemistry

how grams of oxygen can be produced from the decomposition of 100g KClO3? how much iron can be recovered from 25.0g of Fe2O3 how can be produced from 125g Ag2S Figure the precentage composition of the compound. For instance percent of Fe in Fe2O3 =

5. ## Calculus

The average temperature T(x), in oF, in a small office building without air conditioning given by T(x) = 73 ¨C 14 cos (p (x ¨C 3.4))/12 where x is the time elapsed since midnight, 0 ¡Ü x ¡Ü 24. To cool the building, the air conditioning is turned on

6. ## Music

How do i put graphic notation into a composition table ???????????? Thank you for using the Jiskha Homework Help Forum. Here is a site that even shows an example: http://www.upto11.net/generic_wiki.php?q=musical_notation

7. ## Science

During the process of photosynthesis, solar energy is converted into: a. chemical energy. b. heat energy. c. thermal energy. d. mechanical energy. e. nuclear energy. a

8. ## RE: PHYSICS

"Relative" is an important word. Block L of mass mL = 1.90 kg and block R of mass mR = 0.500 kg are held in place with a compressed spring between them. When the blocks are released, the spring sends them sliding across a frictionless floor. (The spring

9. ## History Essay-english problem

In my opening sentence for my essay "Weaknesses of the Articles of Confederation" should I write "The Articles of Confederation were the first governing document of the United States of America." or should I write "The Articles of Confederation was the

10. ## Science

Most reactions in the body occur too slowly on their own to sustain life. This is because: a. all reactions in the body are endergonic. b. many reactions require large inputs of activation energy. c. no catalysts are present in body cells. d. most

11. ## Science

Which of these statements regarding enzymes is FALSE?

12. ## Physics

A cable lifts a 1370 kg elevator at a constant velocity for a distance of 42 m. What is the work done by each of the following? (a) the tension in the cable (J) (b) the elevator's weight (J) work by tension in cable if the car is not accelerating=mgh

13. ## GOVERNMENT HELP

The powers of Congress are affected by all of the following EXCEPT what the a. Constitution expressly says Congress may do b. Constitution says only the Sttes may do. c. States' constitutions say Congress may do d. Constitution is silent about. I believe

14. ## Biology-Meiosis

How would the gametes be affected if a pair of chromatids failed to separate in the second meiotic division?

15. ## GOVERNMENT HELP

Since 1789, the expansion of power of the National Government has been caused by all of the following EXCEPT a. strict construction of the Constitution b. liberal construction of the Constitution c. technological advances d. economic crises. I think it's

16. ## Science

When oxygen is present a. most cells utilize aerobic cellular respiration. b. most animal cells will carry on fermentation and produce lactic acid. c. most bacteria and yeasts carry on fermentation. d. two ATP molecules are produced for each glucose

17. ## TR Roosevelt and Tadasu Hayashi

Hi, Can any one tell me the relations between TR Roosevelt and Tadasu Hayashi? Were there any tensions between these too? I have been Googling for hours and I can not seem to find connections between the two. Thanks Answered yesterday:

18. ## like-kind exchanges

My homework question is to name the four broad types of like-kind exchanges? Are they 1) Receipt of boot 2) Giving boot 3) Assumption of liabilities 4) Three-party exchanges I wasn't sure. There are five types defined at this web site:

19. ## physics

In a television set, electrons are accelerated from rest through a potential difference of 18 kV. The electrons then pass through a 0.34 T magnetic field that deflects them to the appropriate spot on the screen. Find the magnitude of the maximum magnetic

20. ## GOVERNMENT

All of the following are implied powers of Congress EXCEPT the power to a. set maximum work hours b. restrict arms sales c. fund education programs d. censor radio and TV programs This site should be of help.

21. ## Chemistry Help!!!

How will the osmotic preassure of an aqueous solution change as evaporation occurs? A.The osmotic preassure will increase. B.The osmotic preassure will not change. C.The osmotic preassure will decrease. D.The osmotic preassure will increase or decrease

22. ## Econ

Consumer expenditures on safety are thought to have a positive income elasticity. For example, as incomes rise, people tend to buy safer cars, they are more likely to fly on trips than drive, they are more likely to get regular health tests, and they are

23. ## Math - Statistics

A company claims that no more than 5% of a particular product has a defect. In a shipment of 15 units, what is the probability of receiving 3 or 4 defective units? This cannot be answered the way the question is worded. What you need to know is the

24. ## Statistics

In a particular suburb 30% of housholds have installed electronic security systems. If 2 households are chosen at random from this area, what is the probability that neither has installed a security system? Using the binomial probability function for this

25. ## Statistics

In the following cross tab or contingency table the favorite sport of 50 university students is cross classified with the gender of the respondent, What is the probability of 1 - P(female or basebal) and 2 - (football/male)

26. ## twentieth century question

Hello, I have to do a question on the 20th century in what ways we live in the 20th century are we considered romantics I am trying to come up with a good answer is there a way I can look something up. Thanks Would the following search results help?

27. ## ORG CHEM LAB

Im doing a conclusion on a lab of acetaminophen. We were to take a melting point of the crude smale of acetaminophen and melting point of the crystallized acetaminophen. The mp for crude sample: 169.2 degree C The mp for crystallized sample: 172. degree C

28. ## what is the difference

what is the difference between 14kt gold and 14k gold and what one is the better gold Both are the same thing Thank you for using the Jiskha Homework Help Forum. In addition to the answer you already have, look what might happen if you don't distinguish

29. ## GOVERNMENT HELP

All of the following are implied powers of Congress EXCEPT the power to a. set maximum work hours b. restrict arms sales c. fund education programs d. censor radio and TV programs I think it's b. restrict arms sales because I think that's for the states.

30. ## Statistics

It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 5 minutes. A random sample of 100 oil changes yielded a sample mean of 22 minutes. Compute the 99% confidence interval estimate of

31. ## physics

One component of a magnetic field has a magnitude of 0.046 T and points along the +x axis, while the other component has a magnitude of 0.066 T and points along the -y axis. A particle carrying a charge of +7.50*10^-5 C is moving along the +z axis at a

32. ## Economics

Suppose George is makeing \$18 an hour installing electronic chips in handheld computers. Would your offer to work for \$8 an hour get you the job? Why might a profit-maximizing employer turn down your offer? This is a bit of an open ended question. My offer

33. ## Geometry

Given quadrilateral ABCD,ABllDC, diagonal AC. we can prove that angle 1= angle 2, but cannot prove angle 3=angle4 Why is this. What must be true about the sides of the Quadrilateral in order to prove that angle 3 is congruent to angle 4? My answer: The

34. ## envirnomental science

as an environmentalscience teacher, how would you respone to someone who tells you that he or she does not believe in biological evolution because it is just a theory, and we shoul not worry about air pollution because through natural selection, the human

35. ## math

sales tax directions: find the total cost or sale price to the nearest cent? 1500 computer;7%discount Subtract 7% of \$1500 from the price. This is the same thning as taking 93% of \$1500. Your question mentions sales tax but you do not provide a rate for

I need help: Emmett has a 15-year \$115,000 mortgage at 7.1% His monthly payment is \$1,040.09 Find the principal after the first payment. I know to multiply 115,000 by 7.1 divided into 12 months, then subtract that answer by \$1,040.09. When I mulitply

37. ## education

which theorist believed children passed through the sensorimotor stage of development? is the answer piaget. Thanks Yes, Piaget yeah it is

38. ## math

factor the polynomial completely... 3x-15+2xy-10y

39. ## English

Write an essay on the most destructive force in the world today. http://www.google.com/search?q=most+destructive+force&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA Take your pick!! Please note that we don't do students'

40. ## chemistry

I have a compound ch3 = ch- ch - oh ch3 the ch3 is under the first ch from the left, i have to identify the monomer unit and draw a structure showing three monomer unit any help i have a compound CH3= CH - CH - OH and another CH3 under the first CH from

41. ## Statistics

A local company has been in trouble recently over hiring male applicants rather than female. Recently 3 employees hired were all male even though the six applicants for the 3 positions included 3 females. The company claims that they have shaped up. From a

42. ## math

if you had 1.5 liters of water, how many milliliters would you have? There are 1000 millileters per liter. ("Milli" means 1/000). Multiply 1.5 l by that factor.

43. ## Physics

1. It is incorrect. The friction has to equal the force down the plane...right? The trolley has no net acceleration, so it must have no net force. Net force= weight down plane - friction.

44. ## Statistics

Wrong tire pressure can increase tire wear and decrease gas mileage. A manufacturer of new tires tested the tire for wear at different pressures with the below results. Tire pressure (PPI:pounds per square inch) is related to how many miles a tire lasts,

45. ## chemistry

At 650 degree C and a pressure of 690mm HG, the 0.927g sample has a volume of 194cm3. How do I calculate the volume at the same temp but at a pressure of 760mm Hg? Also, how do I calculate the volume at the same pressure but at a temp of 0 degree C? Thanks

46. ## Science

List the three main steps of aerobic cellular respiration. Which of these steps yields (by far) the most ATP? Here are two: Step One: Glucose enters the cell (insulin) and is split into 2 smaller 3 Carbon atoms called pyruvate. Total yield - 2 ATP Step

47. ## calc.- trig substitution

s- integral s 1/ [ (x^4) sq.rt(x^2+9)] i know x=3tanx sq.rt(x^2+9)= 3 secx dx= 3/[cos^2(x)] so far i know: = 1/ (3tan^4(x)) 3secx cos^2(x)) dx =1/ 81 [ (sin^4 (x)/cos^4 (x)) (1/cosx) (cos^2(x))] then i'm not really sure what to do next

48. ## Physics

A power boat of mass 475 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 770 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume -- contrary to fact -- that the resistive force due to

49. ## Statistics

A company claims that no more than 5% of a particular product has a defect. In a shipment of 15 units what is the probability of receiving 3 or 4 defective units? You can probably use a binomial probability function for this problem. P(x) =

50. ## math

Which is the dependent variable in the following situation?: A marine biologist wants to track the miles that a particular dolphin travels over the course of a year. The tracking system records the distance each week. A. length of dolphin. B. number of

Hello! Can someone help me find some websites or information on a man named Giacomo Punccini..and can you find something about the opera he created which is called 'La Boheme'... Thank You for your time! =] You need to spell his name right if you expect to

52. ## Geography

What government imposed barriers stop or hinder the export of automobiles?

53. ## Cross-Cultural Art Project

http://www.google.com/search?source=ig&hl=en&q=Jhonen+Vasquez Have fun. =) Hi everyone, My art class is studying artwork from around the world, and as part of our midterm projects we have to research a particular artist !@#\$%^&presents one of the cultures

54. ## Math

Is that 6%/year simple interest? If so, then \$500 x 0.06 = \$30 for one year. So for 90 days, \$530 can't be correct. I would like to have an account that would more than double in a year, much less in 90 days. The Investors Club invests \$500 at 6% simple

55. ## fractions URGENT!!!!!!!!!!!!!!!

Is 2/3 the smallest out of 1/3? Are you asking if 2/3 is smaller than 1/3? If that's your question, the answer is no. If that's not your question, please rephrase so teachers will understand. Thanks. =)

56. ## Strategic

An organization’s external environment has three components: the remote environment, the industry environment, and the operating environment. My company i chose was Department of Social Service but i am looking for something on the Remote and idustry

57. ## Science

I have to unscramble these letters to make words about electricity. I can't figure out these three. ISRESE LARLPLAE TKLATIWO series, parallel, kilowatt SERIES PARALLEL KILOWATT Thank You Thank You Thank you so much!

58. ## chemistry

Why does this equation account for the fact that the gas volume is unchanged? H2Se + Sn ==> SnSe + H2 H2Se and H2 are gases. Sn and SnSe are solids. 1 mol gas and 1 mol of solid on the left. 1 mol gas and 1 mol solid on the right. Volume doesn't change.

59. ## Statistics

It is known that the amount of time needed to change the oil in a car is normally distributed. A random sample of 100 oil changes yielded a sample mean of 22 minutes and a standard deviation of 5 minutes. Then compared to the interval estimate for the

60. ## Stats

It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 5 minutes. A random sample of 100 oil changes yielded a sample mean of 22 minutes. Compute the 99% confidence interval estimate of

61. ## economics

According to a survey of U.S. firms, the advertising elasticity of demand is only about 0.003. Does this indicate that firms spend too much on advertising? It does not indicate too much is being spent. A 100% increase in advertising would translate into a

62. ## World War 2!?

“World War II was inevitable” inevitable: Impossible to avoid or prevent Why is this statement true? To understand this, you have to understand WWI and its aftermath -- and why many Germans were terribly frustrated and angry.

63. ## biology

How would the gametes be affected if a pair of chromatids failed to separate in the second meiotic division?

64. ## maths calculus

A centre enters students for English levels one and two end test every year. Some take the paper based version, others online version. For planning purposes you need to assume trend patterns indicate that .the total number of entries each year is always

65. ## Calculus

The Picture It frame company determines that the cost function for its new make-at-Home picture frame is: C(x)= 60x + 72,000, where x is the number of frames produced and C(x) is the cost in dollars. The revenue function for the same freame is:

66. ## economics

For effective management an economy the classical and keynesia approaches are important.Discuss with examples from united states take a shot.

Problem: 25-x^2 6 ------ * --- 12 5-x What I Got: 5-x --- 2 *Please Check My Work And Tell Me If I am Correct or wrong.If I am wrong please help me as much as possible.Thank you~ Wrong. When are you going to factor the 25-x^2 ? The 5-x then will divide

1.Would fraction notation for 38% be 19/50 ? 2.Would percent notation for 0.382 be 38.2% 3.Would percent notation for 2/3 be 66.6 (with 6 keep repeating)? Yes, yes, yes

69. ## Science

What structural feature of a leaf allows CO2 from the air to enter the leaf? stomata http://evolution.berkeley.edu/evolibrary/images/interviews/stoma_diagram.gif

70. ## Physics Again!!

Am sending the same question coz i can't find the first one on the message boards. So plz help me. 1. 'velocity is a vector quantity, and the kinetic energy of a body is equal to half its mass times the square of its velocity, so kinetic energy must also

71. ## PreCalc

Someone please help me solve this equation for y. (x^2)(y^2)+xy=1 I need to solve for y so that i can graph it! y^2 + y/x - 1/x^2 = 0 Treat 1/x as b and -1/x^2 as c in the quadratic equation ax^2 + bx + c = 0 There are two solutions y = [-1/x + sqrt(1/x^2

72. ## Sociology

how would a sociologist view the reasons for the uneven representation in the military? What would a sociologist say about how society shaped Americas' decision to join the military? There are many different reasons for joining the military. These reasons

73. ## chemistry!!

If someone could please help me figure out this problem and tell me how you did it, I would really appreciate the help!! Chaum drives a car 10,000 miles during the year and the car gets 22 miles/gallon. How many pounds of carbon dioxide in a year will

74. ## Physics

the dimensions of torque are the same as those of energy. Why it would nevertheless be inappropriate to measure torque in joules. Energy is force x distance, where distance is the distance in the direction of force. Torque is force x distance perpenduclar

75. ## chemistry

What is the positively charged ion present in an aqueous solution of H2SEO3? hydronium. (H30+

76. ## chemistry

What would the charge be of the ion formed by this equation? H2SeO3(aq)==> 2H(aq) + SeO3(aq) The SeO3 ion has a negative two charge.

77. ## Math - Statistics

A company claims that no more than 5% of a particular product has a defect. In a shipment of 15 units, what is the probability of receiving 3 or 4 defective units?

78. ## Calculus

Derivative Differentiate f(x)=(5x-4)^2 There are two ways to do this: (1) let u = 5x-4, and use the "chain rule", df/dx = df/du * du/dx OR (2) expand the polynomial to f(x) = 25 x^2 -40x + 16 and differentialte it term-by-term. You will get the same answer

79. ## Physics

A shot putter puts a shot (weight=70.3N) that leaveshis hand at distance of 1.51m above the ground. (a) Find the work done by the gravitatiob force when the shot has risen to a height of 2.10m above the ground. include the correct sign for work. (b)

80. ## maths

1. Convert the ffl octal numbers into denary number a) 1527 b) 21 364 2. Convert the ffl denary numbers into binary numbers a) 578 b) 709 3. Calculate the follwing using the octal system. a) 704 + 147 b) 652 - 406 c) 657 * 4 d) 754/6 Thanks

81. ## Statistics

A paper manufacturer claims that fewer than 1 in 100 of its reels (2 ton rolls) of paper is flawed. A customer has just received a large shipment of these reels and proceeds to check a random sample of 600 of them for flaws. Of this sample, 14 reels are

82. ## History (WWI)

Why was the war in the air a significant battle of WWI? (Three reasons) Also, supporting evidence and examples would be helpful too. Thank you ~Lucy http://www.firstworldwar.com/features/aces.htm http://www.firstworldwar.com/airwar/observation.htm

83. ## math

Which is the idependent variable in the following situation?: A marine biologist wants to track the miles that a particular dolphin travels over the course of a year. The tracking system records the distance each week. A. length of dolphin. B. number of

84. ## Modern World Histoy

What would one say their experiences may be during A Bloody Stalemate? Think about a soccer game where no matter what either team does, neither is able to win. Both have gone through all there player list; both have gone through the over times..... How

85. ## Math

Find the amount in an account if \$2000 is invested at 6.125%, compounded semi-anually,for 2 years. 2000* (1.030625)^4 = / That is what you get by adding 3.0625% to the principal every 6 months, and compounding 4 times I Am getting 2252.50, is this correct?

86. ## AP U.S. History McKinley's campaign manager

what role did MARK HANNA McKinley's campaign manager play in the election and how would he had voted?

87. ## poetry question

Hello for this poem for this question which one is correct: "The child is father of the man." What does this mean? The best fathers are immature. If one can't be a father he can never have a child. Our attitudes and beliefs as children stay with us

88. ## Statistics

A survey of community banks asked about the loan to deposit ratio (LTDR) a banks total loans as a percent of its total deposits. The mean LTDR for the 110 banks in the sample is xbar = 76.7 and the standard deviation is s = 12.3. In the text a 95%

89. ## Writing

Where Can i find some short current event articles? http://www.nytimes.com http://www.latimes.com http://www.pe.com http://www.time.com That is, just about any newspaper or newsmagazine. =)

90. ## Science

I need to know how to compare mouthwash and toothpaste...what to compare?.. compare bacteria samples in salaiva.

91. ## modern world

http://www.google.com/search?hl=en&rls=com.microsoft%3Aen-us%3AIE-SearchBox&rlz=1I7SUNA&q=edmund+burke =) What was Edmund Burke's understanding of human nature and of human history?

92. ## inverse functions

1-3cos=sin squared You need to define the variables, such as x, y etc. If you are trying to solve 1 - 3 cos x = sin^2 x for whatever x is, then you are not talking about an inverse function.

93. ## accounting

Can someone please check my answer to the following question. Jill bought 500 shares of stock on October 22,2005 for \$30,000. On March 25, 2006 she gave half the shares to her sister when the fair market value was \$55 per share. If Jill's sister sells the

94. ## us history

why was debt and runaway inflation such a problem under the articles of confederation? The Revolutionary War was fought with paper money that had little or no intrinsic value, i.e, it could not be exchanged for coin with monetary value (gold or silver).

95. ## U.S. History- McKinley's Campaign

In Mckinley's Campain,two of this campaign themes were "The Currency Question"- the gold standard or free labor AND "Protective Tariffs" summarize these thems and which of theses themes was more significant? This site will give you the information on that.

96. ## poetry

I would say no, the mariner was not alone on his ship, because there was the wedding guest with him! I went to google and looked up the poem, read it, and it looks like he mostly says things like "The ship was cheered, the harbour cleared,Merrily did we

97. ## poetry

The speaker of "The World Is Too Much With Us" is a materialist at heart. in that poem would the correct answer be false. This will give you a really good summary. http://www.sparknotes.com/poetry/wordsworth/section4.rhtml Yes, I agree with your "false"

98. ## Math-Needing Help Quick!

When Beth finishes college, she has a balance or \$2876.37 on a credit card with an annual percentage rate (APR) or 17.3%. She decides to not make any additional purchases with her card until she has paid off the balance. Assuming the minimum payment is 2%

99. ## chemistry (solutions).

how do you turn a saturated solution into an unsaturated one Add solvent. Some of the solute will dissolve in the added solvent.

100. ## Unit Circle

How do I find tan(-pi/4) from the unit circle? Thanks. Go 45 degrees clockwise or reverse of the circle, it should be at 315 degrees.

101. ## poetry help

I need help with these questions: In the poem "The world is too much with us" does the speaker believe we have lost or love of nature. I believe the statement is true, and also, In William Blakes tyger is he powerful, good, powerless, or bad, I put

102. ## Statistics

A paper manufacturer claims that fewer than 1 in 100 of its reels (2 ton rolls) of paper is flawed. A customer has just received a large shipment of these reels and proceeds to check a random sample of 600 of them for flaws. Of this sample, 14 reels are

103. ## math

(2w-1)^2=4(w-3)^2 Expand both sides of the equation, then simplify: 4w^1 - 4w + 1 = 4w^2 - 24w + 36 ...... ..... w = 7/4

104. ## math

-5(4w + 12 ) = 15 use distributive property to solve -20w-60=15 -20w=-45 -20w/-20w=-45/-20 w=2.25 or 9/4 thanxz

105. ## More Math 2 See If You Can Help Me... :)

Problem: a^2-9 a^2-3a ----- * -------- a^2 a^2+a-12 Here Is What I Got: (a+3)3a ------- (a+4) *Please Check It.I think I did it wrong though.. =[ I'm going to assume your problem is this: (a^2-9)/a^2 * (a^2-3a)/(a^2+a-12) Note: I'm using * to mean

106. ## math

wat are trinomials http://dictionary.reference.com/search?q=trinomials&r=66

107. ## Chemistry

How much water needs to be added to 150mL of an 0.75 molar solution of lithium phosphate to make the solution 0.625 molar? I came up with 70.31mL Can you someone just check this for me please? you want to dilute it 75/62.5, so you are diluting it a factor

I can't figure out this problem... Which character in The Awakening matches the archetypal label of "philosopher"? http://www.sparknotes.com/lit/awakening/ Check especially the analysis of major characters. Then let us know what you think. =)

109. ## maths

1. Identify two examples of exponential r/s 2. The data below shows how the the population of the world has changed over the last three hundred years Year population(mill) 1650 500 1700 600 1750 700 1800 900 1850 1300 1900 1700 1950 2500 2000 7000 The data

asked by me again Thanks sooo much
110. ## Marketing

i need help completing these tasks...can u guys offer help on each of these taskS? thanks... task 1: describe how key aims and objectives for Nike may be achieved by promotional activity.. task1A: explain how the promotional aspect of the marketing mix

111. ## math

the total cost t(c) of c ounces of cinnamon if each ounce costs \$.79 827726

112. ## History Essay

This essay is on Benjamin Franklin, and I was wondering why he went to Philadelphia at only 17. Did he run away or did his parents send him away? Where did he stay and work while he was there? I've researched on Google, but I can't find any good