Questions Asked on
December 2, 2008

  1. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 54.0 cm. What is the

    asked by Anonymous
  2. physics

    A loudspeaker is placed between two observers who are 114 m apart, along the line connecting them. If one observer records a sound level of 61.6 dB and the other records a sound level of 81.3 dB, how far is the speaker from each observer?

    asked by Anonymous
  3. physics

    A source of sound (1000 Hz) emits uniformly in all directions. An observer 3.19 m from the source measures a sound level of 39.2 dB. Calculate the average power output of the source.

    asked by Anonymous
  4. chemistry

    Rank from decreasing to increasing the effect the functional groups have on the melting point of compound x: -OH or -COOH i think its COOH

    asked by un
  5. AP World History

    What's the best way to read the chapter? For my class. We must read the chapter, takes notes, as well as identify people and terms/concepts. We also have to answer study questions. I soon discovered an online student center where it showed an outline of

    asked by Anonymous
  6. Biology

    what enzyme do bacteria se to break down starches? List the three protozoan kingdoms. Which of thse kingdomsdo the slime molds belong to? what is the unique mode of reproduction that is characteristic of the scyphozoans?

    asked by Lilit
  7. physics

    a coin rests on a book. the book tilts until the coin just begins to move. the angle is 17 degrees. what is the coefficient of static friction?

    asked by lauren
  8. Chemistry. What equation do I use?

    A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

    asked by Sarah
  9. chemistry Plz help!

    To make NaTcO4, Tc metal is dissolved in nitric acid to make HTcO4, NO2 and H2O. Then the product HTcO4 is treated with NaOH to make NaTcO4. If you begin with 4.5 mg of Tc metal, how much of NaOH (in grams) is required to convert all of the HTcO4 into

    asked by Jordan
  10. Chem

    Could someone explain to me how to prepare (a) zinc chloride by an acid-base reaction and (b) by a gas formation reaction. If the starting materials available are ZnCO3, HCL, CL2, HNO3, NaCL, Zn(NO3)2, and Zn. Thanks so much for any info.

    asked by Tiff
  11. French

    Can someone check my paragraph please? Merci! It's about Thanksgiving :) Mes vacances sont passées assez ennuyeuses, alors j'ai inventé des nouvelles vacances! Le mercredi dernier, j'étais rentrée à la maison quand mes parents ont dit que nous allons

    asked by Samantha
  12. Science

    How do I prepare 1% H2SO4 from concentrated sulphuric acid (96% with density 1.84g/ml)? Thank you very much for your help.

    asked by Tricia
  13. physics

    A bicycle with wheels of 70.0 cm diameter is going at a speed of 12.0 m/s.How fast is a point on the rim at the top of one of the wheels moving relative to the ground?

    asked by Sandhya
  14. lit

    the best in this kind are but shadows is

    asked by donna
  15. health

    What is a major "breakthrough" that contributed to a more scientific understanding of disease causation

    asked by april
  16. evironmental Science

    describes environmental benefits and challenges of urbanization.

    asked by coreen
  17. graphing lines in the form

    graph linear equation 3x-6y-9=0

    asked by daniel
  18. Math 6th grade

    Does any one know a really good websites for 6th grade math ? I'm behind in math and need to catch up or else I'll be really super dum . I need HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    asked by Emily
  19. LSU

    Determine the surface area of a cylinder whose height is 2m and whose base has an area of 9 pi m square?

    asked by Allison
  20. LSU

    What happens to the volume of a right circular cylinder if you double its diameter?

    asked by Allison
  21. LSU

    A can of black olives has a diameter of 8 centimeters and height of 20 cm. If the can contains 15 olives, each approximately 2 cubic cm, then what is the approximate volume of the liquid filling the can?

    asked by Allison
  22. LSU

    How many 2 inch cubes will it take to make a rectangular prism that is 8 inches by 10 inches, by 14 inches?

    asked by Allison
  23. LSU

    How many 3 cm cubes will fit into a 1m cube?

    asked by Allison
  24. Math Check

    find an equation of the line contaning the given pair of points. (2,4) and (6,5) is this correct i got y=1 over 4x + 2

    asked by Bryan
  25. check math

    Find an euation of the line having the given slope and contaning the given point. m=4 over 5. (6,-7) i got y=4 over 5 - 28 over 5 for the answear

    asked by Bryan
  26. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 54.0 cm. What is the

    asked by Anonymous
  27. Diffraction

    Question Details: A row of seats is parallel to a stage at a distance of 8.70 m from it. At the center and front of the stage is a diffraction horn loudspeaker that has a width of 7.50 cm. The speaker is playing a tone at a frequency of 9300 Hz . The speed

    asked by Mel
  28. Accounting

    How does the cost system work?

    asked by Evan
  29. Accounting

    How and why variances are used?

    asked by Bob
  30. Math (Check)

    Find an equation of the line containing the given pair of points (2,1) and (6,3) Is this the right answear? y=(1/5x)-(3/5)

    asked by Bryan
  31. Calculus

    How do you integrate square root of (4-x^2) ? Pleasee help!

    asked by Megan
  32. ANATOMY

    WHICH OF THE FOLLOWING ORGANS REGULATES INSULIN IN THE BODY? A. LIVER B. LYMPH GLANDS C. PANCREAS D. THYROID GLAND

    asked by CINDY
  33. Math

    What is the slope 5x+3y=3 3x+5y=7 is it -5/3 and 3/5 ?

    asked by Anonymous
  34. Environemtal science

    I need help explaining the four factors that produce changes in poplution and what could happen to the nutria population after all the land is depleted of the nutrias' food resources?

    asked by kia
  35. Math

    How do I solve this: ((5m^3)(3m^-1)^3)/((9n^2)(4n^-1))?

    asked by Sam
  36. History

    I have 3 questions 1. Which of these was not necessary to get Jamestown started in 1607? a. charter from the king b. propaganda to recruit settlers c. a joint-stock company d. the headright system 2. How was Jamestown's relationship with the Indians from

    asked by ken
  37. Algebra mat/116 appendix d

    Complete the table for this equation. x y (x,y) -1 -2 -4 -4 8

    asked by Candace
  38. English

    I NEED HELP IN TRYING TO WRITE A INTEROFFICE MEMO WITH ALL THIS INFORMATION. Background Phoenix Advertising, with its main headquarters in Charlotte, North Carolina, serves clients that include banks, insurance companies, and retail chains. You’re the

    asked by Sabrina Goodridge
  39. fluid mechanics

    The ares rocket has a liquid oxygen tank that sits on top of the core stage. The turbopump inlet for the engines on the core stage must have a certain pressure to operate correctly. The engine designer has asked you to calculate the range of pressures he

    asked by memyself
  40. chemistry

    when aluminum metal reacts with iron (III) oxide to form aluminum oxide and iron metal, 429.6 kJ of heat are given off for each mole of aluminum metal consumed, under constant pressure and standard conditions. What is the correct value for the standard

    asked by sylvia
  41. 9th grade : Algebra

    How would you work out this problem? 2x+5y=10

    asked by Kali
  42. Math

    if shirt's are sold 3 for $50 how much would it cost if you bought 14 shirts?

    asked by Joe
  43. calculus

    The problem asks: A curve i nthe plane is defined parametrically by the equation x = t^3 + t and y = t^4 + 2t^2. An equation of the line tangent to the cerve at t = 1 is...? please help. thanks!

    asked by Nina
  44. Calculus

    If x + 7y = 29 is an equation of the line normal to the graph of f at the point (1,4), then f'(1) = PLEASEEE HELP!

    asked by Nina
  45. English

    What are some words that have been added to our language since people began to travel into space???

    asked by myself
  46. Chemistry

    Why do ions form?

    asked by Alyssa
  47. Finance

    If a company does not do better than its competitiors but the stock market goes up, executives do very well from their stock options. Discuss this statement.

    asked by Finance
  48. Algebra

    Here is my question: If (2, -3) and (-5, 4 are the endpoints of a diagonal of a square, what are the coordinates of the other two vertices? I got (2,3) and (-5,-4). But the other question was: What is the area of the square? How would you find this? Do you

    asked by Celina
  49. science

    Is cell biology directly related to technology????

    asked by Twilight lover
  50. Computer

    How do you download a video from youtube into your my documents?

    asked by Lena
  51. math

    can you help me find the probability to the question? A spinner like the one shown is ued in a game. Determine the probability of each outcome if the spinner is equally likely to land on each section. Express each probability as a fraction and as a

    asked by gaby
  52. Math

    0.03 need to put it into a decimal fraction

    asked by Melissa
  53. 3rd grade

    how do I write the time in three different ways for 3:50

    asked by Ross
  54. Finance-options

    I need help on the following question. Suppose that you are the manager and sole owner of ahighly leveraged company. All the debt will mature in one year. If at that time the value of the company is greater than the face value of the debt, you will pay off

    asked by David
  55. french

    niaacd

    asked by matt d
  56. chemistry

    If H2SO4 were added to the following, would it form a salt, if so what is the name of the salt? NaCl Ca(OH)2 Hf AlCl3 H2O Mg(OH)2

    asked by Bubba
  57. 5th grade

    can you unscramble the word bavrilea

    asked by dominique
  58. Chem

    will Ne or Xe have a higher boiling point? why?

    asked by George
  59. Chemistry

    What is the group 3A element that forms the most basic oxide? I thought it was TI, why isn't it? thanks

    asked by Susi
  60. chem-intermolec forces

    are covalent bonds broken when.... melt benzene melt quartz boiling C2H5OH evaporating water disolving bromine in water?

    asked by Jay
  61. Science

    I can be three different states of matter, but not at the same time. I am necessary for life, but i can also destroy life. I can be under your feet, around your body, or over your head. What am I?

    asked by Samantha
  62. english

    can someone tell me what the living conditions of Shakespeare's times were like

    asked by brandon
  63. science

    what is the name of a poisionous plant like a mushroom that has 9 letters?

    asked by kaitlyn
  64. Calculus

    series: n=1 to n=inf of 6/(n^3-4) convergent or divergent?

    asked by Shaniquaa
  65. Physics

    The velocity of a 629-kg auto is changed from 10.0 m/s to 44.0 m/s in 70.0 s by an external, constant force. (a) What is the resulting change in momentum of the car? (b) What is the magnitude of the force?

    asked by Anonymous
  66. Physics

    A 2569 kg van runs into the back of a 827 kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road can be negligible, find the initial speed of the van.

    asked by Anonymous
  67. GEOGRAPHY

    in what state are the Everglades located? What is the northernmost place on Earth called?

    asked by SAMMY
  68. chemistry

    What is formed when Na2S is added to a beaker containing amonnia solution?

    asked by Mel
  69. Physics

    Suppose that you let the masses m1 and m2 slide (without adding the third mass). a) What is the acceleration of the mass 25g? Hint: identify the force that produces the motion and the one that opposses and write the equation for the net force. b) What is

    asked by lulu
  70. Science Olympiad Examination

    Hello, Please give me some useful websites for the following subjects: Amphibians and Reptiles Bioprocess Reach for the stars(Astronomy) Disease Detectives Crave the wave Anatomy: Circulatory system, and nervouse system. The test is open book, and I want

    asked by Science Olympiad Link Help
  71. spelling

    I need some words that start with a silent consanent.(I'm not sure this is how you spell it)

    asked by anya
  72. 9th Grade Math

    Hey, I finished my math homework, and im not so sure i did it correct, so can someone do this question and i will look at the answer to see if my work was correct this is State and Justification Given : m

    asked by Victor
  73. muscular energy

    what is the definition of muscular energy

    asked by connor
  74. 3rd grade social studies

    1. What are the geographical (physical) features of Mexico? 2. Compare life for the Aztecs before and after the Spanish conquest. Thank you.

    asked by Elaine
  75. 6th grade Social Studies

    Describe what you think are some of the positive and negative issues related to political action committees and interests groups.

    asked by Tessa
  76. Calculus

    How do I prove that the series ln(n)/(3n) is divergent?

    asked by Shaniquaa
  77. 3rd grade social studies

    american indians met european explorers and shown them what?

    asked by jay
  78. chemistry

    three questions please: (1) What kinds of evidence can you use to determine if a chemical reaction has occurred? (2) How do the properties of the cooked egg differ from the properties of a raw egg? (3) how are the endothermic and exothermic reactions the

    asked by lexi
  79. algebra

    Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, P, t years from 2010. This is based off of an initial population of 6,000 in 2010, with a growth of 200 ppl per year. Please show work

    asked by Carmine
  80. HISTORY!!!

    I have this test tomorrow and i have yo do this study guide and i don't no two of the questions... they are... what did the progressives support and what dod they oppose in the progressive era?!? three things for what they supported and one thing for what

    asked by Ella
  81. 8th grade

    what percent of 60 is 15

    asked by kyle dougherty
  82. grammar

    In this sentence, is summer a noun even though it is a direct object? Go during the summer.

    asked by Lisa
  83. business law

    1. Goldfarb owns a 500 acre tract of land known as Blackacre. He executes a deed conveying Blackacre with the following language, “To March for life, then to Hunt.” March is excited to receive Blackacre, but soon executes a deed to the property with

    asked by mike
  84. Science

    What are the advantages and disadvantages of organic farming?

    asked by Michael
  85. Chemistry

    how do i tell if something can dissolve into another the question is which f these solvents will dissolve salt, NaCl?

    asked by Mia
  86. Computers

    An Excel workbook can contain more than one worksheet. Give two examples of a spreadsheet application where it would be necessary to have more than one worksheet and explain your answer.

    asked by Mary
  87. Algebra

    The question is: find the value of 500 dollars after 4 years invested at an annual interest rate of 9 percent (compounded continuously). I got 716.66. Is this correct? Thanks for your help!

    asked by Aurelia
  88. Algebra

    I am supposed to find how long it takes for an investment to double at an annual interest rate of 8.5%, compounded continuously. I know that e is supposed to turn into ln when you try to divide by t (or at least, I think), but how do you do this? Could

    asked by Aurelia
  89. Math

    Describe a simple process for using rates and unit prices that might help someone who is having difficulty understanding these concepts? I do not understand what this is asking, can someone explain what it is wanting?

    asked by A.W.
  90. government

    how does an iron triangle differ from an issue network?

    asked by Anonymous
  91. Spanish

    Can you please see if this is correctly written in Spanish? If not, may you please provide suggestions on how I can fix it. Thank you very much. Éstas son tres cosas necesarias para mantener una vida sana: Recomiendo que tengas un hábito alimenticio

    asked by Anonymous
  92. government

    what do believe are the most important expressed powers that the president has?

    asked by Anonymous
  93. Amir

    Please list the different types of venom that snakes give.

    asked by Science Olympiad
  94. Social Studies

    Where did the Egyptians go to expand their buisness?

    asked by Imani
  95. Math

    The school had a bake sale to raise money. A group of 11 students bought either chocolate chip cookis for $.40 cents each or brownies for $.50 cents each. The total amount they spent was $5.10. How many chocolate chip cookies and brownies did they buy?

    asked by Sara
  96. Visual Arts

    I am finding a site so I can learn advanced three-point perspective methods. Can you help me?

    asked by Anonymous
  97. Math

    Three students came to the bake sale to shop. The sum of their ages is 33. The product of their ages is 1,320. How old are they?

    asked by Sara
  98. 12th grade English

    A Lesson Before Dying- Quotations Analysis. " I had gone to barbershops;I had stood on street corners, and i had gone to many suppers in the quarter.But i had never really listened to what was being said.Then i began to listen, to listen closely to how

    asked by David
  99. history project

    Is their any valuable websites about anne franks life.

    asked by brooke
  100. history

    “The Gettysburg Address” What message did the Gettysburg Address communicate to our war torn nation in 1863? How are the ideals articulate in the speech still relevant for our country today? supply as much info as possible!

    asked by llauren awesome!
  101. Chemistry. Please check my answer!

    A piece of lead with a mass of 27.3 g was heated to 98.90oC and then dropped into 15,0 g of water at 22.50oC. The final temperature was 26.32oC. Calculate the specific heat capacity of lead from these data. This is what I did. Could you check my answer? I

    asked by Sarah
  102. government

    How can the president control bureaucrats? how can congress control them?

    asked by Anonymous
  103. math

    4.5x(1.25x+130)=3x-115 find the value of x and show the steps

    asked by vaishnavi
  104. government

    last question why might bureaucrats choose willingly to do things other than what they might want?

    asked by Anonymous
  105. french

    Bonjour Mme! Pouvez-vous correcter mon paragraghe pour moi? En anglais, it's supposed to say: We looked for a stocking, but we couldn't find a spare, so we ended up stuffing Santa's red underwear! Nous cherchons pour un bas, mais nous ne trouvons pas un

    asked by amanda
  106. chemistry

    The molar mass of sucrose, or table sugar, is 342 grams. Calculate how many grams of sucrose are required to make 3.0 liters of 0.50M sucrose solution.

    asked by Bubba
  107. Math

    Hi, I need help understanding how to find the product: (2 1/3)*(3 1/5) Multiplication and division with mixed numbers and use the reciprocal to divide and then reduce.

    asked by Mallory
  108. Math - help really needed

    Prove each idenity. 1+1/tan^2x=1/sin^2x 1/cosx-cosx=sinxtanx 1/sin^2x+1/cos^2x=1/sin^2xcos^2x 1/1-cos^2x+/1+cosx=2/sin^2x and (1-cos^2x)(1+1/tan^2x)= 1 I haven't even gotten 'round to sny of the quedtions because the first one is just so hard. I'm not

    asked by Rani
  109. name of the mpuntain in east

    can any one help me about finding the name of mountain in east please. thanks.

    asked by bhavin
  110. Algebra

    solve using distributive property (show all work) 3w-1-4w=4-2w

    asked by Jameisha
  111. algebra

    Solve using distributive property (Show all Work) 15-3y=y+13+y

    asked by Jameisha
  112. Algebra

    Solve using distributive property (Shaow all Work) 8t-4+3(y+7)=6y-3(y-3)

    asked by Jameisha
  113. Physics help, pl0x

    A 1.0 times 10^3 kg elevator carries a maximum load of 800.0 kg. A constant frictional force of 4.0 times 10^3 N retards the elevator’s motion upward. What minimum power, in kilowatts, must the motor deliver to lift the fully loaded elevator at a

    asked by Anonymous
  114. 9th grade

    for my physical science class were supposed to name ionic compounds and change the name into a formuala but i don't understand how to do it my teacher didn't explain it fully. Ex:Na2CO3= Sodium Carbonate Sodium phosphide=Na3+P-3

    asked by Evan
  115. Trig

    Find all the solutions in the interval [0,2pi). 2sin2x - sqrt(2) = 0 sin2x = sqrt(2)/2 I'm confused by the double angle. Please help.

    asked by Travis
  116. geography

    I need name of some mountain in east america. please help

    asked by bhavin
  117. Spanish

    Please see if this is correctly written. If there are any mistakes, please feel free to correct me. Thank you for your time. Éstas son tres cosas necesarias para mantener una vida sana: Recomiendo que tengas un hábito alimenticio equilibrado o nutritivo.

    asked by Anonymous
  118. Math - help really needed

    I'm sorry to double post; I don't want to seem impatient, but I really need help with this. Prove each idenity. 1+1/tan^2x=1/sin^2x 1/cosx-cosx=sinxtanx 1/sin^2x+1/cos^2x=1/sin^2xcos^2x 1/1-cos^2x+/1+cosx=2/sin^2x and (1-cos^2x)(1+1/tan^2x)= 1 I haven't

    asked by Rani
  119. ap world history

    what effect did the indian ocean trade have on have on the societies that take part in it? what factors determine the extent or the significance of the effects of trade on society?

    asked by autiana
  120. physics

    The pressure in a constant-volume gas thermometer is 0.700atm at 100 deg. Celsius and 0.512atm at 0 deg. Celsius. a) What is the temperature when the pressure is 0.0550atm? b)What is the pressure at 500 deg. Celsius?

    asked by Becky
  121. 1301 Education

    The meaning of 3 S to a T

    asked by Graciela
  122. physics-HELP

    Suppose that you let the masses m1 and m2 slide (without adding the third mass). a. what is the acceleration of the mass 25g? Hint: Identify the force that produces the motion and the one that opposes and write the equation for the net force. b. what is

    asked by kim
  123. poetry

    ok so im supposed to create a poem about child abuse...and i have some good ones but i totally just got writers block and i need help..here is part of the poem, any suggestions MY PAIN it started with a pen and paper... i write my emotions without thinking

    asked by symantha
  124. ap world history

    how did geography affect the trade patterns of africa and of asia during the time period of 300 bce and 1000 ce?

    asked by autiana
  125. social studies

    Need help with project. what are essential ideans that are included ina POLICY of imperialism relating to renaissance europe

    asked by colby
  126. ap world history

    why did buddhism and christianity spread when ans as it did in 300 bce to 1000 ce?

    asked by autiana
  127. ap world history

    are there substantial similarites between the orgins and the devolpment of the silk road and trans-saharan trade?

    asked by autiana
  128. math

    3 4 ×8y-4

    asked by ???????
  129. English

    What does Martin Luther King mean by "Continue to work with the faith that unearned suffering is redemptive?"

    asked by Jason
  130. math

    A log is cut into 4 pieces in 12 seconds. At the same rate how long would it take to cut the log into 5 pieces? HINT: the answer is not 15

    asked by Dezy
  131. 11th grade

    why did the religons of buddhism and christianity spread when and as it did in africa during 300 bce?

    asked by michelle
  132. spanish

    I need help.. i need to make 4 sentences.. With... (Miro) (Miramos) El, la, al, a la empleado video carpeta profesora I don't care how u make them i just need help..

    asked by dan
  133. English

    Virgil is not afraid to trade on the rather extreme level of the Purdy's ignorance? Why does he do so and what does he expect to gain? I don't understand this question. Anyone care to explain. Thank you

    asked by Larry
  134. 8th Grade Algebra

    Draw two squares of appropriate size to compare the areas of Alaska (591,004 miles squared) and Texas (266,807 miles squared). * I don't get how to set up and do this problem.

    asked by Joy
  135. Chemistry

    A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

    asked by Jordan
  136. Business Law

    Goldfarb owns a 500 acre tract of land known as Blackacre. He executes a deed conveying Blackacre with the following language, “To March for life, then to Hunt.” March is excited to receive Blackacre, but soon executes a deed to the property with the

    asked by John
  137. 5th grade Geomentry

    I am a location in space. it takes only one letter to name me.

    asked by Asad
  138. Chemistry

    what are the order intermolecular forces according to strength??

    asked by Andrew
  139. health

    What are the five stages of a human's life cycle?

    asked by Anna
  140. 8th grade geometry

    segment AC is congruent to segment AD by the ______ of the Isosceles Triangle Theorem. (8 letters, 5th=E, 7th=S) Please help!

    asked by girl
  141. Education

    Standards-based education can sometimes put pressure on teacher to be sure they 'measure-up' to the expectations of state standards. How can teacher accountability have a positive and a negative influence on the classroom environment? Respond to

    asked by Dawn
  142. u.s.history

    how many years was george bush in office?

    asked by j25
  143. Education

    What are the implications on NCLB on teachers; on students in the classroom; and on schools and school districts?

    asked by Dawn
  144. significant figures

    how do i make 1020 to 2 sig figs? it cant round to 1100..

    asked by s
  145. Math - please elaborate

    can someone please further explain my question on? it's just a farther bit down. The subject is "Math - help really needed" I think I almost got the answer, but I'm not sure where to go from there. really appreaite all the help so far as well; thank you.

    asked by Rani
  146. i need help please!!

    Suppose that you let the masses m1 and m2 slide (without adding the third mass). a) What is the acceleration of the mass 25g? Hint: identify the force that produces the motion and the one that opposses and write the equation for the net force. b) What is

    asked by lulu
  147. physics

    Posted by Anonymous on Tuesday, December 2, 2008 at 12:43am. A loudspeaker is placed between two observers who are 114 m apart, along the line connecting them. If one observer records a sound level of 61.6 dB and the other records a sound level of 81.3 dB,

    asked by Anonymous
  148. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 54.0 cm. What is the

    asked by Anonymous
  149. 8th grade

    3x^2 - 1/3 = ? please show steps

    asked by Spanky
  150. physics

    A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h in the same direction. 1.What is the name of the physical process that would occur if both vehicles kept moving at constant

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  151. college

    I am looking for a poem " I am What I am", I need help critiquing this poem.

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  152. calculus

    Let f and g be differentiable everywhere. If g is the inverse of f and g(-2)=5 and f'(5)=-1/2, then g'(2)=? PLEASE HELP! Thanks

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  153. calculus

    integrate: square root of (4-x^2)

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  154. Thermochemistry

    I'm confused about the difference between the q in q=mc(Tf-Ti) and (Delta)H, or enthalpy. What exactly does enthalpy mean and how is that different than q? (I'm also confused about what Gibbs Free Energy actually means; I know that if it's negative, the

    asked by Kevin