# Questions Asked onMarch 18, 2008

1. ## Physics

A transformer consists of 275 primary windings and 834 secondary windings. If the potential difference across the primary coil is 25 V, (a) What is the voltage across the secondary coil? (b) what is the effective load resistance of the secondary coil if it

2. ## math

One of the world's largest stained-glass windows is at Kennedy International Airport in New York. It is a rectangle with a height to length ratio of 2 to 25. If the window is 24 feet high, how long is it?

3. ## alg 2

Given the following functions, perform the indicated operation and state the domain. f(x) * g(x) 3X^1/2*6X^1/3. I got 18X^5/6. But without using a calculator how do i find the domain?????? Thanks:)

4. ## HELPPPPPP

a box with a volume of 22.4 L CONTAINS 1.0 mol of nitrogen and 2.0 mol of hydrogen at zero degrees celcius. Which of the flollowing statements is true? the correct statement is the partial pressure of N2 is 101kPa. How come??

5. ## Chemisty

For the reaction SO3 plus H2O>>H2SO4, calculate the percent yield if 500.g of sulfur trioxide react with excess water to produce 575g of sulfuric acid??

6. ## Chemistry

What mass in grams of 1-chloropropane(C3H7Cl) is produced if 400.g of propane react with excess chlorine gas according to the equation C3H8 plus Cl2>>C3H7Cl plus HCl?

7. ## chemistry

How many moles of Ag can be produced if 350.g of Cu are reacted with excess AgNO3 according to the equation Cu(s) plus 2AgNO3(aq) plus Cu(NO3)2(aq)?

8. ## physics

A coil with 150 turns , a radius of 5.0 cm , and a resistance of 12 ohms surrounds a solenoid with 230 turns/cm,and a radius of 4.5 cm. The current in the solenoid changes at a constant rate from 0 to 2 A in 0.10 sec. Calculate the magnitude and direction

9. ## PHYSICS

A coil with 150 turns , a radius of 5.0 cm , and a resistance of 12 ohms surrounds a solenoid with 230 turns/cm,and a radius of 4.5 cm. The current in the solenoid changes at a constant rate from 0 to 2 A in 0.10 sec. Calculate the magnitude and direction

10. ## physics

11.2 The baggage truck A has a mass of 800 kg and is used to pull two cars, each with a mass of 300 kg. If the tractive force F on the truck is F = 480 N, determine the initial acceleration of the truck. What is the acceleration of the truck if the

11. ## Chemistry

For the reaction 2Zn plus O2>> 2ZnO, how many grams of zinc oxide can be produced from 100.g each of zinc and oxygen?

12. ## Pre Cal(please show me the work)

At the show a basketball card dealer tells you that a vintage card increases in value by a factor of 10 every 9 years.If the card is now worth \$32, how long ago did she buy it?(Hint: Remember that the value is multiplied by 10 every 9 years, not every

13. ## biology

i am looking for proof that oxygen comes from water and not from carbon dioxide. can you send me a link or a brief explanation on this subject? thanks.

14. ## hard math

The jelly Junior school color is made by mixing red paint and yellow paint. The ratio of red to yellow is 3 to 5. How much red paint should be mixed with 20 oz of yellow?

15. ## chemistry

10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i

10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i

17. ## Elementary lesson (sorry)

I am doing a practice unit plan for a 4th grade class about the importance of water. The first lesson plan in the unit should focus on a comprehension skill activity that involves writing. I went to the library and i choose the book "The Drop in my Drink"

18. ## managerial economics

In the 2000 U.S. presidential contest, Al Gore was advised by his strategists to wait for George W. bush to announce his vice-president running mate before making his own decision on a running mate. Under what circumstances would Gore be better off giving

19. ## Pre Cal long problem( Can I see the work on this)

A stuffed animal dealer tells you that a fish he bought for \$8 four years ago is now worth \$200 follow the steps below to find the effective yield for this investment. Begin with the equation 8(1+r) ^4=200.Solve for (1+r) ^4 Take the common logarithm of

20. ## Physics

Compare 940 on the AM dial to 94 on the FM dial. Which has the longer wavelength and by what factor is it larger?

21. ## Physics

Who will hear the voice of a singer first- a person in the balcony 50.0 m away from the stage, or a person 3000 km away at home whose ear is next to the radio? How much sooner? Assume that the microphone is a few centimeters from the singer and the

22. ## chemistry

A saturated aqueous solution of calcium hydroxide has a pH of 12.25. What is the [Ca2+] of such a solution?

23. ## math

Fifty umbrellas were sold on a rainy April day. Five times as many red as blue were sold, three times as many green as blue, nine more black than blue, and seven fewer purple than black. Five umbrellas were purple and six were white. How many of each color

24. ## US HISTORY

Although the U.S. Congress was still unwilling to declare war in early 1941, Churchill told his war cabinet, “We must patience and trust to the tide which is flowing our way, and to events.” What was it Churchill meant by this remark?

25. ## Physics

A transformer consists of 275 primary windings and 834 secondary windings. If the potential difference across the primary coil is 25 V, (a) What is the voltage across the secondary coil? (b) what is the effective load resistance of the secondary coil if it

26. ## Economics

Leakages from the income-expenditures stream are: A. consumption, saving, and transfers. B. saving, taxes, and transfers. C.saving, taxes, and imports. D. imports, taxes, and transfers.

27. ## math

A family spends 20% of its monthly income on food, 23% on rent, and 42% on other expenses and saves the balance. If the family saves \$360 per month, what is its monthly income?

28. ## Math

Please double check Real Numbers and Order |4| + |3| Answer: 7 |-9| - |4| Answer: 5 Adding Real Numbers 7+ (-9) + (-5) + 6 Answer: 17 |-27 + 14| Answer: 13 Subtracting Real Numbers –1/2 – (-5/8) Answer: 2 –3.4 – (-7.6) Answer: -4.2 –54 – 119

29. ## Physics

An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A. (a) How much energy is stored in the magnetic field? (b) At what rate is thermal energy developed in the inductor? ok once again I

30. ## chemistry

For the reaction SO3 plus H2O>>H2SO4, how many grams of sulfuric acid can be produced from 200.g of sulfuric trioxide and 100.g of water??

what is the adverb in this sentence The black car drove slowly down the road

32. ## chemistry

what is the electron geometry of F^2, HF ?

33. ## Physics

Given that the Earth's radius is 6.37x10^6 m and taking the earth's gravitational field at its surface to be 9.81N/kg, find the gravitational potential at the Earth's surface.

34. ## Probability

This is a lottery odds question. It involves the Mega Millions, where 5 numbers are selected from the intergers 1-56 (without replacement) then a special 6th ball is selected from a new set of intergers 1-46. The odds of winning are 1/175711536. If exactly

35. ## American History

I am writing a research paper on the women's rights movement. I have to discuss whether it was a success or failure and support my answer with detail. I did some research and I believe that the women's rights movement was a success because women today are

36. ## Algebra

I've learned that the difference between domain and range is.....domain is the set of possible X values and range is the set of possible Y values. also, a domain is the values that a function maps "from" and the range is the values that a function maps

37. ## English expression

What is the suitable response to the greeting, 'Hi.'? (It is Hello.) That's right. If your friend says, 'How is it going?', what do you have to say? (We can say, 'So-so.') What is the suitable response to the statement,'Glad to meet you.'? (It is 'Glad to

38. ## Physics

An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A. (a) How much energy is stored in the magnetic field? (b) At what rate is thermal energy developed in the inductor? ok once again I

39. ## Algebra

You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an \$80,000 loan from your family and a \$38,250 small business loan. These loans must be repaid in full within 10

40. ## Physics

what is the purpose of the double bell jars that surround the international prototype of the kilogram in Paris?

41. ## algebra

I need help with a word problem. Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 miles per hour and train B is traveling at 70 miles per hour.Train A passes a station at 6:10 A.M. If train B passes the

42. ## Financial Accounting

The machinery costs 182,000 with a six year salvage value of 14,000. On December 31, at the end of its fifth year in operations, it is disposed of What would be the journal entry at the year of its disposal?

43. ## earth

if the tilt of the earth's axis was increased beyond 23.5 degrees, will it cause seasonal variation in the equator to decrease? if the earth's axis becomes perpendicular to the orbital plane between the earth and the sun will it increase the length of

44. ## mesa community college

define the term race and ethnicity.

45. ## math

An object that weighs 10 ib on earthwould weigh only 4 ib on mars. If you weigh 95il on earth, how much would you weigh on mars?

46. ## chemistry

this is my class data list of total heat (KJ) vs Mass of biodiesel fuel burned: Heat of combustion: 24948 J 606.48 J 35933.3 J 26763 J 24062.5 J 29400 J 6972 J Mass: 0.39 g 0.31 g 0.18 g o.43 g o.36 g o.28 g 0.34 g Heat absorbed: 9.729 KJ 1.9564 KJ 11.51

47. ## Math

Please double check Jean deposited a check for \$625, wrote two for \$68.74 and \$29.95 and used her debit card to pay for a purchase of \$57.65. How has her account balance changed? Answer: \$468.66

48. ## physics

if a motorboat travels at 25km/hr down a river whose velocity is 4km/hr wgat is the boats actual velocity? a. 21km/hr b. 29km/hr c. 100km/hr d. 6.2km/hr please repost the answer

49. ## Sociology

I have a paper I have to turn in on punishment in the United States. The assignment calls for Researching the effects of the four types of punishment (Retribution, Deterrence, Rehabilitation, and Societal Protection) in relation to today’s American

51. ## Algebra

Hi I am in need of help, please... The question says to perform the indicated operation. x^2+2x-3/x^2-9 Divided By x^2-1/x^3-27 I put divided by in the middle to show that it is dividing two rational expressions.

52. ## grammar

WERE DO YOU LEAVE COMMANTS? DO YOU KNOW ANY PLACE IN CALIFORNA/ TEMECULA WERE THRE IS FREE TUTORING?ARE YOU TEACHER? IF YES FROM WHAT SCHOOL? DO YOU ALSO TEACH OR TUTOR MATH? IF YES THEN I NEED SOME HELP AND TIPS IN MATH. DO YOU ALSO TEACH SCIENCE?I ALSO

53. ## Biology

I am doing a worksheet on organelles. But I can't find the word for this definition: hairlike structures with the capacity for movement. What would be the organelle for this definition?

54. ## Economics

My assignment is to research how wage inequality is measured and if it is present in your chosen industry. My chosen industry is Coal Mining. My question to you is if you know any sources that might be of help besides Wikipedia? My instructor does not like

55. ## Algebra

Expressions with Multiplication & Division. Evaluate each each expression for x = 3 7x ? 18/x ?

56. ## Speech

I am doing a speech over spaying and neurting. And my main points consist of health benefits, better behaved pets, and overpopulation. I need some more information, but some information from magazines or articles online can you recommend me some please?

57. ## computer software

I am trying to download Adobe reader 8.1.2 to my computer I have "dial up " service it seemes like it's been downloading forever and the bar is not moving to far it has been at 10% for a long time is this normal ? Thanks in advance for your help :>

58. ## calculus

use the power series to estimate the series: from 0 to 4 of ln(1+x)dx with absolute value of the error less than .0001/ Give your estimate of the integral as well as a bound on the error. I found the 'terms' in the series to be:

59. ## Cutural diversity

I am not sure what race is, please give me an example on how to define race and ethnicity.

60. ## Algebra

Can someone help me? Do I subtract 17 on both sides and then............ The position of an object moving in a straight line is given by s=2t^2-3t, where s is in meters and t is the time in seconds the object has been in motion. How long (nearest tenth)

61. ## algebra

Rewrite the following expression with positive exponents (33xy)^-3/7 Would it be 1 over (33xy)^3/7?

62. ## Art

How do I critic Art?

63. ## Algebra

I have one more question I need to ask about algebra, this one is a perform the indicated operation question. 4x 5x ----- - ---- x^2-9 x^2+4x-+3 I am really confused on the -+3 part, I don't know if my teacher made a typo or what, because without the - in

64. ## English Essay Writing

I posted my English essay homework on March 17,2008 and no one has answered my question yet. I understand that every question may not be answered but I was just wondering If anyone that was good at Eassy writing could take a look thanks very much

65. ## Calculus

How do we integrate 1/lnx.

66. ## Algebra

Rose decided to create a flower bed in front house. One-half of her flower bed is planted with pink tulips. She plants three-fourths of the rest of the ground with purple iris. After that, she plants orange marigolds in one-half of what remains. The rest

67. ## History

whats the four countries competing for claims of the oregon territory?

68. ## math

What does the heart do?

Evaluate each expression for x = 3 2x x (3x) + 5 --- 6

70. ## tech, society, culture

How has technology contributed to (1) the development and (2) the expression of political terrorism, as witnessed on September 11, 2001 in the United States?

asked by in deep need of help
71. ## managerial economics

Suppose the two rival office supply companies Office Depot and Staples both adapt price-matching policies. If consumers can find lower advertised prices on any items they sell, then Office Depot and Staples guarantee they will match the lower prices.

72. ## geography

what causes a change between high and low discharge levels!? please could someone help me!? thanks

73. ## math

4. Aristotle used deductive logic, in particular, syllogism. Solve for G to find in which century B.C. he was born. A = D B = 4 E = 3 D = E and G = A + 1

74. ## english

can someone proofread this for me and make comments.. thanks Compare and Contrast / A College Education Patrick Allitt maintains that Undergraduates should be able to Specialize and that liberal arts are a matter of choice for those undecided, but that

75. ## spell

Ok Here is more of my essay. :) There is an underlying problem that is promoting racism. It is the fact that a lot of people believe, and try to make themselves believe, that racism no longer exists. Many people today live their lives oblivious to what is

76. ## algebra

2/z=3/z-1/2 solve for z

77. ## probability of an event

How do you predict the probability of an event using trials or simulations? Example please? Thanks. :)

78. ## Computer Science

Design a GUI java application which dsipalys data of an array made from objects of three classes "students", "employee" and "officer" which all inherit from "person".

79. ## Geography AS level

what issues have risen in the uk when managing floods? please could somebody help me!? thanks

80. ## chemistry

1. what do the spectral lines represent in the bohr atomic model? 2. What do the black spaces represent in the Bohr atomic model?

81. ## Social studies

What are some hardships faced by families during The Great Depression.

82. ## american history

I am writing a research paper on the women's rights movement. I have to discuss whether it was a success or failure and support my answer with detail. I believe that in some ways it was a success and failure because even though women throughout the years

83. ## math

can somebody please solve these inequalitys 3w>30 4n+8-2 2y+1-10 Thanks

84. ## fjng

Can we control the way that terrorists use technology without impacting our own constitutional freedoms?

asked by in deep need of help
85. ## algebra

Evaluate the polynomial for x=2 2x^2-4x+2=2*(2)^2-4*(2)+2 =2*4-4*(2)+2 =8-4*(2)+2 =8-(8)+2 =18 Am I right or wrong?

86. ## Chem

Does the lattice constant of a unit cell vary over isotopes? e.g Si 28 and Si 29

87. ## english

What is the difference between writing a college term paper and a thesis for an essay?

88. ## Science

Summerize how galaxies might have formed and grown.

25x^4-25x^2+6=0 solve type an exact answers using radical and rationalize all denominators

Solve w^2+3w-54=0 x= -1 minus sqrt55, -1+ plus sqrt55 Is this right?

91. ## math

If the square root of the square root of the square root of a number is 2, what is the number? I got 256. Is that correct?

92. ## math

In 1654 Blaise Pascal invented Pascal's triangle,for which the first four rows are given: 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 --1 6 15 20 15 6 1 --1 7 21 35 35 21 7 1 Determine the ratio of the sums of the terms of the seventh and eighth rows. Is

93. ## math

Mary Fairfax Somervilee was a nineteenth century mathematician in England. To discover the year in which she was awarded a silver medal for her solution to the Diophantine equation, find the value of the following expression: 3(1 + 3 + 5 + ... + 51) - 221

Evaluate the polynomial for x=2 2x^2-4x+2=2*(2)^2-4*(2)+2 =2*4-4*(2)+2 =8-4*(2)+2 =8-(8)+2 =18 Am I right or wrong?

95. ## Elementary lesson

I want my readers to understand that water has been around from the beginning of time. I want them to understand that the earth is constantly recycling the water and that the waters that dinasours drank millions of years ago, is the same one that we are

96. ## Calculus

How do we integrate xlne^x .

97. ## english

is there any example of a "Critical Thinking Quiz. Please let me know.

98. ## Math

translate to an equation: and then solve The sum of two numbers is -4 and their difference is -10. Find the numbers.

99. ## social studies

what caused the historical inciden referredt o as "shay's rebellion"?why was it a sign of the times?

100. ## pre cal

The 1st year and 3rd year periods for these accounts are the lengths of time that you must keep the money in the account. (You pay a penalty if you take the money out before the term is up.) Why might an investor choose a Certificate deposit with a shorter

101. ## Spanish

How do you say to sell in spanish. gracias!

102. ## Cutural diversity

why is race and ethnicity is important concept to the United States society?

103. ## poetry

rearrange the words in the poem but you must use EVERY word in the poem The whiskey on your breath Could make a small boy dizzy; But I hung on like death: Such waltzing was not easy. We romped until the pans Slid from the kitchen shelf; My mother's

104. ## algebra

Use the quadratic formula to solve the equation x^2-5x=-10

What is partial pressure?

106. ## Algebra 2

how do the operations of addition , subtraction and division affect radical expressions?

107. ## WRITING

Define my thesis for an essay. Following: Explain why you would or would not want to live near a large recreational center. Should I state that I would or would not. I'm just not understanding how the format of a thesis should be.

108. ## Science

Why is dark matter and dark energy reffered to as dark?

109. ## Language Arts

I need an iambic pentameter poem that sounds like guy has written it. Also to be about school.

110. ## alg. 2

a little three square root 4/ little 6 root 16. the answer is one. how do i get that?

111. ## Geography/English essay

If it's possible, can somebody help me fing grammatical error in this essay? The Medicine man is one upon various movies that should make us concerned with our environment. The things occurring to our environment are something that should concern us in a

112. ## NEW: Geography

The Medicine man is one upon various movies that should make us concerned with our environment. The things occurring to our environment are something that should concern us in a variety of aspects, one of them displayed in the Medicine Man. In reality (and

114. ## algebra

The solution for x = x^2+14x-4=0

115. ## social studies

what volter mean by seying goverment need to have both shepherd and butchers

116. ## Math

how do you find the slope of the best fit line graph? And what is it supposed to tell us?

117. ## Science

What is the definition of expansion?

118. ## Chemistry

I am having trouble in calculating equilibrium concentrations. Where I get stuck will be at the end where I have to square root both sides and get the value of x to plug in the equation to get the individual concentration of every substance.

119. ## eth 125

How did slavery influence the evolution of both Black and White America today?

120. ## chemistry

What is partial pressure?

121. ## MATH HELP PLEZZZZZZZZZZZZZZZZZZZ

Solve the equation Vx + 7 +5=9 a) -3 b) 9 c) 23 d) 16

122. ## Ethics

Explain the concept of deceptive advertising and manipulation. Use two credible sources to support your discussion and include examples of these concepts.

123. ## algebra 2

can you show me the steps how to do this? square root of 3-x + square root of 3+x = x

124. ## marketing

I am doing a marketing assignment on the website for Kraft. I am supposed to find out their product mix width, length, depth and consistency. I am a bit confused though. As far as the company's width I think it is: health and wellness; quick meals; snacks;

125. ## algebra

The diagonal of a square connects the points (8,-2) and (-1,-11). Find the perimeter of the square.

126. ## socialstudies

how did the first americans live during the ice age?

127. ## Pre-Cal

The 1st year and 3rd year periods for these accounts are the lengths of time that you must keep the money in the account.(you pay a penalty if you take themoney out before the term is up.) Why might an investor choose a CD with a shorter term rather than a

128. ## math

what is the formula to find chord in a circle

129. ## english

In the story listed below (Effective conclusion. Need help in those the questions below: What kind of conclusion does the writer use? What is the impact of that kind of conclusion in this essay? The "R" Word How do you avoid saying "retarded"? By John Cook