1. physics

    A granite column in a building is 8.50 m high and has a mass of 2.16 multiplied by 104 kg. (a) How much heat (J) is needed to increase its temperature by 10.5°C, given its specific heat is 0.200 kcal/kg·°C? (b) What is its change in length (m) if its

    asked by Alice on July 24, 2013
  2. third grade math

    how do you check addition problems by adding up? Let's use this addition problem as an example. 21 35 ___ First you add 1 + 5. To check your work, add up, 5 + 1. If you have a column of numbers and you go down each column to add them together, that's

    asked by zeke on January 7, 2007
  3. guidance and discipline

    Miss Vickers second grade class is having a great time with math centers. They are seated where they are comfortable,some on the floor and some at tables.The students are working with manipulatives they chose from the math shelves. They are talking quietly

    asked by Melody on January 12, 2007
  4. English

    Can you help me rephrase first part of the song "Parents just don't understand",please? Thank you very, very much in advance 1) Parents just don't understand that children are going to make mistakes. 2) The song says that once a mother took his child (the

    asked by Franco on April 14, 2010
  5. persuasive letter (IGNORE PREVIOUS-This 1 is FINAL

    This one is updated one. I am sorry for trouble. I have to write to Expedia for their mistake on reserving my car rental at LA. I want a free car rental voucher. -------------------------------- Tajinder Singh 392 Hinter Wayne Drive, Nashville, TN 52312

    asked by singh on July 16, 2007
  6. precalc

    Success in business depends on many factors. Buying habits of consumers, trends in fashion and taste, seasonal trends, the strength of the competition, and the condition of the national and international economies all affect the fortunes of a business. The

    asked by lesley on January 4, 2017
  7. Finance

    1. Following is the projected net income stream associated with the use of Zartek technology. (Note: this net income stream does not take into account that Zartek’s owners invested $2,000 to develop Zartek in Year 0.) Globus Maximus Enterprises would

    asked by Mel on December 28, 2014
  8. business

    1.Following is the projected net income stream associated with the use of Zartek technology. (Note: this net income stream does not take into account that Zartek’s owners invested $2,000 to develop Zartek in Year 0.) Globus Maximus Enterprises would like

    asked by Gerald on April 18, 2010
  9. Social Studies

    "We must all hang together, or assuredly we shall all hang separately -Benjamin Franklin what message was franklin trying to convey to the second continental congress when he spoke these words? A. The thirteen colonies should make peace with Great Britain

    asked by Anastasia on August 16, 2016
  10. Computer science

    In C++ you will be making a program that can take command like args. Using command line arguments, allow the program to do the following If the command is -i, print: Integer, and then print the integer after it. If the command is -f print: float, and then

    asked by Syd on March 31, 2018
  11. Boolean Algebra

    In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee

    asked by Hy'Lee on June 14, 2013
  12. Boolean Algebra

    In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee

    asked by Hy'Lee on June 13, 2013
  13. Boolean Algebra

    In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee

    asked by Hy'Lee on June 14, 2013
  14. Boolean Algebra

    In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee

    asked by Hy'Lee on June 12, 2013
  15. Boolean Algebra

    In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee

    asked by Hy'Lee on June 11, 2013
  16. Chemistry

    A water chemist obtained a 250 ml sample from a nearby lake and fixed the oxygen on-site with alkaline solutions of MnSO4 and KI-NAN3. Returning to the laboratory, a 200 ml sample was analyzed by acidifying the sample with conc H2SO4 and then titrating

    asked by Dalal on March 20, 2018
  17. English 111

    33. I'll make a centerpiece out of it. 36. I thought it was a funny joke, but I didn't think you'd get sick. 37. We must persevere and not be implicated in wrong doing as we push ahead in this fight. 43. I don't believe in religion, but kept my eyes closed

    asked by Jordan on December 9, 2013
  18. Biology

    A cell has a salt concentration of 0.2 %. If it is placed into a solution with a salt concentration of 0.1 %. a) What change will occur to the salt concentration inside the cell? b)What change will occur to the water concentration inside the cell? c)What

    asked by Emily on October 18, 2010
  19. English

    (1) We decided to climb Mt. Rainer, but it was a long, hard journey to Washington State from Medford, Oregon. (2) We were worried about our likely sucess in the cold enviroment of the upper slopes. (3) For one thing, Marty was broke and anxius about having

    asked by AK on July 10, 2008
  20. English

    (1) We decided to climb Mt. Rainer, but it was a long, hard journey to Washington State from Medford, Oregon. (2) We were worried about our likely sucess in the cold enviroment of the upper slopes. (3) For one thing, Marty was broke and anxius about having

    asked by k on July 10, 2008
  21. Pre-algebra PLease help

    1. Rename 4/7 as a percent. Round to the nearest tenth of a percent if necessary. A. 47% B. 1.8% C. 57.1% D. 28% 2. Rename .709 as a percent. A. 709% B. 70.9% C. 79% D. 7.09% 3 is 1/3 is equvulant to 33 1/3% what percent is equvalnet to 2/3? A 33 2/3%

    asked by Ski on December 13, 2016
  22. math

    how would this equation look: y=f(x+3) when y=f(x)= x^2 would it look like so.... x^2(x+3) adam, there's a slight problem with your notation in the expression y = f(x+3). Ordinarily we wouldn't put an expression in place of a variable, unless we were

    asked by adam on July 6, 2006
  23. economics

    Can you please exlain to me if I'm wrong not just correct me. ps. Ceteris paribusor the following markets, show whether change causes a shift in supply curve, a shift in demand curve, a movement along the supply curve, and/or a movement along the demand

    asked by allie on September 26, 2011
  24. Trig #1

    i don't know how to search for this question can somebody help plzz question is : List as many jobs as you that use trigonometry. net find out what specific training is necessary to be hired for eac job. This is to include the name of the major, the name

    asked by Tareena on May 28, 2008
  25. 7th grade Math quick help Ms. Sue

    Can you check to see if tese are right? 1. What is 0.68 written as a simplified fraction? 68/100 17/25 100/68 34/25 2. Mrs. Whimsey’s class is having a pizza party. If there are 16 students and 4 pizzas cut into 8 slices, what answer choice represents

    asked by Delilah on October 3, 2012
  26. Math

    What is the value of a stock that grows at a supernormal rate of 18% for the first four years, and then slows down to a constant growth rate of 10%? An annual dividend of $2.00/share was just paid, and the rate of return on common stock is 13%. Possible

    asked by Lyra on June 23, 2017
  27. Philosophy

    a) Using long or short truth tables (symbolize as necessary and show tables) determine and state whether the following arguments are valid, briefly explaining your table; and b) if valid, demonstrate validity by deductions using Group I rules. Arg 1. P-->Q

    asked by Anne on December 12, 2006
  28. Civics

    In 1998, the Disney Corporation urged passage of a law that would extend the right of artists or writers to protect their work. Disney was successful, and Congress agreed that the Mickey Mouse brand, for example, would be protected. Why was Disney able to

    asked by Lillly on May 16, 2016
  29. physics-energy

    HI well i have two questions 1) a 2.0-m-long pendulum is released from rest when the support string is at an angle of 25 with the vertical. what is the speed of the bob at the bottom of the swing? 2)A 2.0*10^3-kg car starts from rest at the top of a

    asked by becky on November 27, 2006
  30. Algebra

    What would the currency be from Afghanistan currency if sunglass cost $169.40 U.S. dollar amount, so my question would be how do I solve the equation if S=C(1+r/100)^5 to find the inflated cost S, in 5 years, where C is the current price of that country's

    asked by Mayl on June 23, 2010
  31. Statistics

    Assume that the points scored by the winning teams for all NCAA games follow a bell-shaped distribution. Using the mean of 76.5 and the standard deviation of 7, estimate the percentage of all NCAA games in which the winning team scores 84 or more points.

    asked by Shellie on September 12, 2009
  32. physics

    A 25,000 kg rocket ship near the surface of the Earth accelerates upwards due to a constant 1.25 MN of thrust from its engine. A simple pendulum on the ship is observed to complete 100 full swings in 75.0 s. What is the length of the string? 1. For a

    asked by Anonymous on February 20, 2015
  33. Math

    Uh...Yea... Sorry about this, but I"m trying to study and I need someone to walk me through, missed a lot of school. fyi, when there's a / its under the entire string before it until you hit the inequality symbol. Tony Bowled 135 and 145 in his first two

    asked by Jayme on October 21, 2015
  34. Math

    Asked to simplify the expression sin(180−è), Rory volunteered the following solution: sin(180−è) = sin 180−sin è, and, because sin 180 is zero, it follows that

    asked by Anonymous on January 3, 2017
  35. physics

    What would be the final temp when 100 kg of 0 degrees Celcius cold water is mixed with 60 kg of 35 degrees warm water? Ans is in degrees Celcius. The sum of the heats gained is zero (remember one will lose heat, so have a negative heat gained). Heatgained

    asked by Kristina on March 29, 2007
  36. Re: Physics/Math

    A sphere of mass 2.7 x 10^-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 41 degrees with the vertical. Find the magnitude of the push provided by the breeze and Find the tension in

    asked by COFFEE on February 18, 2007
  37. BUSINESS COMMUNICATION

    I HAVE 5 COMMITTEE MEMBERS I HAVE TO PERSUADE WITH DIFFERENT PERSONALITIES. THEY HAVE TO AGREE ON MY SERVICE. I HAVE TO INCREASE EFFICIENCY OF A BUSINESS OPERATIONS AND KEEP MY CURRENT EMPLOYEES HAPPY. Please note that we don't do students' homework for

    asked by LAURA on July 26, 2007
  38. Social Studies

    The economic loss which came through war was great, but not nearly as influential as the psychological change, the change in habit and thought... "The hatred of the Yankees was increased. The defeated Southern leaders were popular heroes. Numbers of

    asked by Marylyn on April 29, 2015
  39. Check My Answers Math

    The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is. How far away is a storm if 9 seconds elapse between the lightning and the thunderclap? Use the formula d= t/3 , where t is the

    asked by SmartyPants on March 13, 2015
  40. Again...

    Hey...so writerteach. told me that u guys put the website on a new server and lost info. Well here are my questions again...which I posted before. Thanks for ur help on the previous post. 1. The disposal of used batteries is a problem since they often

    asked by help! on June 14, 2006
  41. music

    what does the word dynamics mean? if you would like to kno go look it up in the dictionary. or go to google and type it in. they could give you a full defenition of the word. In short, the loudness or softness of a song/melody. In music, markings added to

    asked by rhiann on September 17, 2006
  42. Chemistry

    EQUILIBRIUM: To prepare the standard solution, a very large concentration of ferric ion is added to a small initial concentration of thiocyanate ion. True or False It would help if we knew what you were doing. We are determining Chemical Equilibrium:

    asked by Joe on January 31, 2007
  43. Chemistry

    A 0.4584 g sample of impure zinc chloride, ZnCl2, FW = 136.3 g/mole, was dissolved in water and excess silver nitrate was added to the solution. The mass of the dry silver chloride, AgCl, FW = 143.3 g/mole, produced was 0.8564 g. The balanced precipitation

    asked by Anonymous on October 16, 2011
  44. Visual Basic (Computer Programming)

    ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week.

    asked by Erick on January 16, 2013
  45. Chemistry - Solubility

    INFORMATION: [HCl] = 0.1388 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: A 25 ml aliquot was used Flask A: Distilled Water (7.4 mL of HCl needed to titrate) Flask B: 0.05 M NaOH (7.5 mL of HCl needed to titrate) Flask C: 0.025 M NaOH

    asked by PleaseHelpThankYou! on March 31, 2014
  46. Statistics

    Direct mail advertisers send solicitations (that is "junk mail") to thousands of potential customers in the hope that some will buy the company's products. The response rate is usually quite low. Suppose a company wants to test the response rate for a new

    asked by Nick on October 27, 2013
  47. Language Arts

    Write S if the underlined word is a subject pronoun. Write O if the word is an object pronoun. 1. They'll climb up the ladder with us. Us is underlined This is an object pronoun 2. It will make a great clubhouse It is underlined It is a subject pronoun 3.

    asked by Patrick on January 25, 2016
  48. algebra

    Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original

    asked by nimal on November 4, 2014
  49. algebra

    Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original

    asked by nimal on November 4, 2014
  50. Math Middle School

    Please help me solve this challenge problem: I love hot chocolate and coffee. I began by making one cup of hot chocolate. I drink half of my cup and then I fill the cup with coffee. I stir the new mixture and drink half of the cup and then fill the cup

    asked by HELP PLEASE!!!!! on October 11, 2011
  51. chemistry

    A classic experiment in equilibrium studies dating from 1862 involved the reaction in solution of ethanol and acetic acid to produce ethyl acetate and water. The reaction can be followed by analyzing the equilibrium mixture for its acetic acid content. In

    asked by gs on March 13, 2011
  52. Math

    A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the

    asked by Sarah on September 8, 2013
  53. Physics

    A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the

    asked by miley on September 8, 2013
  54. math correction

    can someone correct this for me.Also do i have to solve it all the way or what does it mean by inequality form. Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion

    asked by jasmine20 on January 9, 2007
  55. Chemistry

    The addition of aqueous ammonia to the cathode compartment of the cell described below reduces the cell potential. Likewise, the addition of aqueous ammonia to the anode compartment increases the cell potential. Zn(s)/Zn^2+(aq)//Cu^2+/Cu(s) Assume that

    asked by Annie on May 4, 2009
  56. Criminal Justice

    Ms. Singh is a client of your firm. She was recently arrested for breach of peace during an altercation at a bar. Ms. Singh was the recipient of unwanted advances from another patron at the bar. Her boyfriend became jealous and punched the other man. Ms.

    asked by meeee on October 7, 2010
  57. Geometry

    Can some one please check these for me.Thanks Angle DEF is similar to Angle HJK and the scale factor of angle DEF to anle HJK IS 5/2. If EF =15 FIND JK Here is what I came up with Am I correct 5/2 = EF/JK 5/2 =15/JK 5(JK)=30 JK=30/5 JK=6 Given: ABCD is a

    asked by DANIELLE on June 14, 2007
  58. math - pls check!!!

    Write an equation in point-slope form for the line that passes through one of the following pairs of points (you may choose the pair you want to work with). Then, use the same set of points to write the equation in standard form and again in

    asked by SkatingDJ on January 13, 2015
  59. trigonometry (repost) Mathmate

    Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" Using the previous values, a=21.46 b=46.28 C=32-28-30=32.475 We have A+B=180-32.475=147.525 a+b=67.74 a-b=-24.82 tan((A+B)/2)=3.433633

    asked by Anon on February 27, 2011
  60. organic chemistry laboratory

    hi, im not sure if all my answers are correct especially number 5. could any one check and tell me? please and thank you. 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test

    asked by Niah on November 2, 2014
  61. organic chemistry laboratory

    hi, im not sure if all my answers are correct especially number 5. could any one check and tell me? please and thank you. 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test

    asked by Niah on November 4, 2014
  62. Calculus II

    With Taylor/Maclaurin polynomials Use the Remainder Estimation Theorem to find an interval containing x = 0 over which f(x) can be approximated by p(x) to three decimal-place accuracy throughout the interval. f(x) = sin x p(x) = x - 1/6 * x^3 The book

    asked by Sean on June 14, 2009
  63. SS

    Well I cant find anything for social studies. No one ever wants to post them... But In what way did Beveridge think overseas expansion would help solve labor problems in the united states? A: Expansion would bring new foreign markets for American goods,

    asked by Random Guy on February 16, 2017
  64. physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

    asked by Kaylynn on April 18, 2011
  65. physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

    asked by Anonymous on April 28, 2011
  66. Physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

    asked by Kaylynn on April 18, 2011
  67. MTH 156

    When two gears are mashed the revolution per minutes (rpm) are inversely proportional to the number of teeth, as show below. In one machine the rpm ratio of the larger gear to the small gear is 4:7 The small gear has 216 teeth In second machine the larger

    asked by Kimberly on August 5, 2015
  68. Chemistry - Solubility

    INFORMATION: [HCl] = 0.1388 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: Flask A: Distilled Water (7.4 mL of HCl needed to titrate) Flask B: 0.05 M NaOH (7.5 mL of HCl needed to titrate) Flask C: 0.025 M NaOH (10.8 mL of HCl needed to

    asked by PleaseHelpThankYou! on March 31, 2014
  69. Math

    you use a rectangular piece of cardboard 20 in by 30 to construct a box. you square the sides x in. from each corner of the piece of cardboard and then fold up the sides to form the bottom. A. write a function A to represent the area of the base of the box

    asked by Kim on January 4, 2011
  70. Algebra

    16. The equation models the height h in centimeters after t seconds of a weight attached to the end of a spring that has been stretched and then released. h= 7 cos (π/3 t) a. Solve the equation for t. (I'm pretty sure i've got this one solved) T= 3

    asked by Chloe on July 7, 2018
  71. MATH

    How can solve this? help For one pony, the critical force was 1.16 times its body weight. It experienced a force of 0.75 times its body weight at a speed of 2 meters per second, and a force of 0.93 times its body weight at 3 meters per second. At what

    asked by aryan on January 28, 2012
  72. Physical Science

    My homework is to do some exercises on the Foucault Pendulum. I'm stuck on several of the problems. One is to find the approximate angle of rotation of the earth in one day at our latititue, which is 39.9. I found the equation n = 360 sin of latitude, but

    asked by Beth on September 23, 2007
  73. chemistry

    A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

    asked by bill on May 22, 2012
  74. chemistry

    A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

    asked by bill on May 22, 2012
  75. Calculus

    This is another textbook number that doesn't have the solution and I can't figure it out. Any tips would be greatly appreciated. For each of the plane surfaces, calculate the exact surface area. (Answer in fractions) (a)The surface composed of all surfaces

    asked by Paul on August 9, 2012
  76. Check my answers Ms. Sue?

    I posted this in my last question but its not showing up for me.. But i have redone the questions you said were wrong and i was hoping you would check them again 1. How did the southern economy change after the Civil War? Shipped raw materials to northern

    asked by Karen on January 19, 2016
  77. Geology

    1) Granite is an intrusive, felsic rock, which may be produced by partial melting or fractional crystallization. Explain how these processes can produce felsic magmas from more mafic parent magmas 2)The age of granite can be determined using radiometric

    asked by Adam on April 11, 2007
  78. nutrition

    Compose an essay that answers the following questions: What arguments are being raised by the Grocery Manufacturers of America? Are they taking responsibility as contributors to the obesity epidemic? If yes, list them. If not, why not? Are they

    asked by amber on November 11, 2009
  79. English

    Can you check these sentences,please? Thank you very much. 1) How big/large is the population of New York? Are they both correct? 2)He was dismissed last year and he hasn't found a job yet. 3) He's been working for three years as a mechanic at an assembly

    asked by Franco on December 9, 2010
  80. math plz help

    A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. A. Find the theoretical probability of selecting a pink rubber

    asked by Pink on April 15, 2015
  81. EEE

    the solve of the shipment of 10 items has 2 items defective and 8 items are non defective.IN THE inspection of the shipment a sample of items will be selected and tested.if a defective items is found the shipment of 10 items will rejected.in a sample of 5

    asked by ibrahim on October 15, 2011
  82. algebra

    a salesperson who must decide between two monthly income options: Option A: Salary of $1642 per month, plus 8% of monthly sales or Option B: Salary of $1900 per month, plus 6.5% of monthly sales For what amount of monthly sales is Option A the better

    asked by suzie on November 22, 2010
  83. economics

    1. Consider the following four debt securities, which are identical in every characteristic except as noted: W: A corporate bond rated AAA X: A corporate bond rate BBB Y: A corporate bond rated AAA with a shorter time to maturity than bonds W and X Z: A

    asked by Jaye on October 26, 2010
  84. history

    Children received their schooling at home in many pre-industrial families. However with the industrial revolution, more children attended formal schools. Which of the following statements best explains why this change in schooling developed? 1)after the

    asked by kayci on June 4, 2010
  85. 6th grade math

    Starlight tree farm sells Douglas firs and noble firs. One December they sold 139 more Douglas first than noble first. The total number of trees sold was 377. Which equation could be used to solve for n the number of noble of threes sold? A. N – 139 =

    asked by Lily Longoria on May 12, 2016
  86. english

    This is from "the Importance of Being Earnest" please help thank you. Match the character from the Importance of Being Earnest to his or her quote. a. Algernon b. Cecily c. Gwendolen d. Jack e. Lady Bracknell f. Miss Prism 1. "from the moment I saw you I

    asked by bella on January 16, 2018
  87. Computer science

    need help how do this program. Use the top-down modular approach and pseudocode to design a suitable program to solve it. Alberta Einstein teaches a business class at Podunk University. To evaluate the students in this class, she has given three tests. It

    asked by Poohboi on August 30, 2015
  88. Linear Programming and Applications

    The production-line employees at GE work four days a week, 10 hours a day. Each day of the week, (at least) the following numbers of line employees are needed: Monday–Friday, 7 employees; Saturday and Sunday, 3 employees. GE has 11 production-line

    asked by Jessie on August 23, 2012
  89. Physics

    1. A train whistle has a frequency of 1000 Hz. If the train is speeding at a velocity of 60 km/h past a stationary railroad crossing attendant, what is the apparent frequency a) as the train approaches him, b) as it moves away from him? Assume speed of

    asked by James on November 26, 2009
  90. AP Chemistry

    So I already posted this question earlier today and got a reply but now that Im working through it, its not working. What mass of solid sodium formate (of MW 68.01) must be added to 130 mL of 0.63 mol/L formic acid (HCOOH) to make a buffer solution having

    asked by Helpmepls on January 16, 2018
  91. Chemistry(Please help!!)

    For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

    asked by Hannah on October 23, 2011
  92. Chemistry

    For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

    asked by Hannah on October 23, 2011
  93. chemistry

    the solubility of AgCl in HCl is a. low, as Cl- ions cause an equilibrium shift towards the solid form b. low, as Ag+ has already reacted with Cl- c. high, as HCl readily ionizes d. high, as AgCl can then form e. high, as H2 forms, then escapes (a) The

    asked by Mary on April 21, 2007
  94. English

    For homework I have to answer the following questions regarding Puerto Rican obituary by Pedro pietri but I am horrible at interpreting poems if someone can please help thank you "Puerto Rican Obituary", by Pedro Pietri: What has the American dream turned

    asked by Jessica on May 23, 2013
  95. Math

    The solution set of radical(x - 1) (is greater than sign) 5 is the set of all real numbers x such that: F. x (is greater than sign) 4 G. x (is greater than sign) 6 H. x (is greater than sign) 24 J. x (is greater than sign) 25 K. x (is greater than sign) 26

    asked by Anonymous on May 3, 2015
  96. HELP

    3. Page 213 #18 6,-5 4. Page 222 #24 4x+3=4 5. Page 223 #54 The y intercept is -4 and the line whose equation is 2x+5=8 6. Page 233 #24 Passing though(-2,-5) 7. Page 233 #52 Passing though (-4,2) and perpendicular to the line whose equation y1/3x+7 8. Page

    asked by Tina on February 3, 2007
  97. information

    I have a project to do and can not find a site to watch a trial here is the assignment I have to do all i need is a site where I can watch a trial any suggestions please Find a current or past court trial (via Internet or television) where an investigator

    asked by RAY on January 20, 2008
  98. Math

    So I figured out how to do the first 6, how do I do the remaining? 7. Evaluate the function below over the domain {-1, 0, 1, 2}. As the values of the domain increase, do the values of the function increase or decrease? y = (3/4)ˣ 8. Suppose an investment

    asked by Name on March 14, 2018
  99. AP Physics

    Hi, please help me solve these questions for my class. I have so much homework A car traveling at 17 m/s accelerates at 3.3 m/s2 for 16 seconds. To the nearest meter how far does it travel? To the nearest tenth of a m/s, what is the final velocity of the

    asked by Leslie on September 2, 2009
  100. Chemistry

    At a certain temperature, the solubility of N_2 gas in water at 2.38 atm is 56.0 mg of N_2 gas/100 g of water. Calculate the solubility of N_2 gas in water, at the same temperature, if the partial pressure of N_2 gas over the solution is increased from

    asked by Becca on February 4, 2012

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