1. math

    3 pumps, working 6 hours a day, can empy a water tank in 2 days. How many hours a day must 9 pumps work to empty the same tank in 1 day?

    asked by robin on January 26, 2013
  2. physics

    What is the general formula for energy?When asked to write formula for energy in general without specifying kinetic or potential or work can we write eienstien's e=mc2 formula?

    asked by J.Nandhini on September 22, 2012
  3. math

    Tom is showing his work in simplifying (5.2 – 8.5) – 0.5 + 6.8. In which step did Tom make an error? Step 1:: (5.2 – 8.5) – 0.5 + 6.8 Step 2: 5.2 + (–8.5 – 0.5) + 6.8 (distributive property) Step 3: 5.2 – 9 + 6.8 Step 4: 5.2 + 6.8 – 9

    asked by Gerold Humpfrey the Third on May 16, 2019
  4. biology

    Would two nucleotides be sufficient to provide enough codons to code for all 20 amino acids and why? how many amino acids could be coded for by codons containing only two nucleotides? Will three nucleotides per codon work and why or why not?

    asked by Michelle on September 29, 2008
  5. Algebra

    Use synthetic division to find P(-3) for P(X)= x^4 - 2x^3 - 4x + 4 So I know how to do synthetic division and all, but I'm still somehow not coming up with the correct answer! Below is my work so far. Please help me interpret it so that I can get the

    asked by Mitch n' Joey on December 1, 2017
  6. Physics

    A tennis ball of mass 57. g bounces off a wall. Right before hitting the wall, the ball is moving to the right and up with vx=+40. m/s and vy=+10. m/s. Right after bouncing off the wall, the ball is moving to the left and up with vx=-35. m/s and vy=+10.

    asked by Gharib on October 25, 2010
  7. Physics(Please check)

    A paperweight, when weighed in air, has a weight of W = 6.95 N. When completely immersed in water, however, it has a weight of Win water = 4.26 N. Find the volume of the paperweight. Would I multiply the two values of weight and then by the density of

    asked by Hannah on June 21, 2012
  8. Social Studies (Check, Please!) (Ms. Sue)

    1. How did the status of women and African Americans in the armed forces change during the war? A: In World War I, women were barred from combat. Many jobs available to women in the army were administrative or clerical. This all changed during World War

    asked by Victoria on January 3, 2016
  9. MATH

    Sshow all the steps that you use to solve this problem in the space provided. A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t.

    asked by Ben Folds on February 13, 2019
  10. c++

    Your Mathematic school teacher want to use a program that can read the name and the mark of a student. Your teacher want the program to automatically find the grade of the mark and display the result(name, mark and grade). Help your teacher to develop a

    asked by sarah on October 11, 2012
  11. PHYSICS, PLEASE HELP TODAY!

    when it comes to chunks being ejected the masses are and velocities are 5kg(1737m/s), 10kg (184.3m/s), 100kg (1994m/s), 1000kg (2008m/s) What happens to the difference between the velocities as the number of chunks increases? What happens to the kinetic

    asked by Tracy on November 10, 2006
  12. Chemistry

    Calcium carbonate is insoluble in water. Name two substances that when mixed in solution, will form a precipitate of calcium carbonate. Explain why is it the two substances that you have chosen.  why does magnesium chloride cannot be prepared in the lab

    asked by StuartKess on September 6, 2011
  13. College Chemistry

    For my homework I got this problem that my professor never went over in class how to do it and I don't know how to interpret it. A chemist runs a second order reaction of A->B starting at 10mili moles/L concentration of A (and no B). After one hour the

    asked by Sarah on May 25, 2010
  14. Reiny

    Solve: -x^4 + 200 = 102x^2 I know the last line was wrong I just took a guess on factoring it out. I just knew how to do the first 2 lines. The problem has no typos it is -x, its crazy but that's how it is in my book. how does that change the answer? "Your

    asked by Jon on March 3, 2008
  15. Physics

    How many arrows of force would be needed in a free body diagram of a rocket taking off from the moon? Ignore any solar system objects other than the moon itself. One Two Four Three A person is trying to lift a crate that has a mass of 15.3 kg. The normal

    asked by BlessedGalPal on October 10, 2018
  16. economics

    Help me reword this?? The Fed is organized as a corporation, owned by its member banks, and directed by a government-appointed board. Monetary policy affects the size of the money supply and the level of interest rates. The first "tool" of monetary

    asked by casandra on April 28, 2013
  17. chemistry steps check

    What is the pH of the solution created by combining 11.10 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? This is exactly like what Dr Bob has shown me on the first problem i put here and yet i get this simple one wrong... Here are my steps:

    asked by Amy on May 2, 2008
  18. Algebra

    In each of the following statements fill in the blanks with always sometimes or never. 1. If the ordered pair (x,y) is not a solution to an equation in two variables, then the point (x,y)is on the graph ______________. 2. The graph of a horizontal line

    asked by jessica on April 16, 2007
  19. chemistry

    how much thermal energy is needed to raise 500.0g of H2O at 50.0*C to steam at 100.0*C? step by step solution and answer!!???!! answer? You have to be kidding. Are you taking a quiz and want to turn it in? Goodness. Find the heat in each of the following.

    asked by crystine cole on April 12, 2007
  20. Analytical chemistry

    Calculate pCd2 at each of the following points in the titration of 40.00 mL of 0.0040 M Cd2 with 0.0040 M EDTA in the presence of the auxiliary complexing agent NH3. The solution is buffered at a pH of 11.00. Take the NH3 concentration to be a constant

    asked by Ashley on April 4, 2013
  21. analaytical chemistry

    a student mixes equal volume of 1 molar tin chloride and coper sulfate and observe tha no preciptate forms .then the students mxis equal volume of 1molar solution of zinc sulfate and tin floride and observe the formation of precipitate .which compound is

    asked by Gebru on June 13, 2016
  22. Chemistry questions

    1) Calculate the mass of NaHCO3 required to generate 50mL of CO2, at 1 atm. pressure and 25*C. Do I need to use PV=nRT? where for n it will be both my n's from C and O2 together? 2) Solubility of CO2 in water at 25* is 0.145g in 100mL. Assuming the

    asked by Jimmy on May 2, 2012
  23. Chemistry

    Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2

    asked by Hannah on February 12, 2012
  24. Calculus

    Work out the problem and explain your steps as you go please! 1. Find the limit by numerical evidence of limx -->4 x3+4x2-7x-5 2. Find the limit of limx-->-9 x2-81x+9. 3. Find the limit of each of the following: a. limx-->0 x+4x-2x b. limx-->0 x3+51 x2-17

    asked by Lexi on May 16, 2012
  25. French for Mischa

    PRESENT TENSE OF REGULAR -ER VERBS AFFIRMATIVE: jouer = to play (the infinitive is introduced by "to" and does not say WHO or WHEN; that's why it's called "infinite/infinitive!") (I play, I DO play, I AM playING) = note 3 possible English translations for

    asked by SraJMcGin on September 22, 2007
  26. Biology

    Hi all, Need help with this: What is the difference that you see on a EKG when you have non-transmural MI vs. transmural MI? a) In transmural MI the Q wave is amplified, and the R wave is depleted making the QRS complex look inverted b) In non-transmural,

    asked by Bobby on October 17, 2016
  27. Statistics

    Height (ft) Interval after (min) 96 68 111 80 76 66 91 72 66 58 108 79 116 84 91 79 The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent

    asked by Stephanie on February 12, 2014
  28. math

    what is the sum of all consecutive numbers from 101 to 200, those two numbers inclusive? Halfway between, is 150. Then add 149+151,thence 148+152, and so on till 101+199. Each instance you have 300. So it seems to me... Sum= 200 + 150 + 300*N, where N is

    asked by james on July 7, 2007
  29. Math

    In your​ class, you have scores of 73,85,76, and 92 on the first four of five tests. To get a grade of Upper C, the average of the first five tests scores must be greater than or equal to 70 and less than 80. a) Solve an inequality to find the least

    asked by Ms. E on September 30, 2015
  30. Math

    Solve this equation algebraically: (1-sin x)/cos x = cos x/(1+sin x) --- I know the answer is an identity, and when graphed, it looks like cot x. I just don't know how to get there. I tried multiplying each side by its conjugate, but I still feel stuck.

    asked by Momo on October 18, 2009
  31. Physics

    A truck is moving away at 30 mph from a car moving towards the truck at 60 mph. If the truck emits a horn of frequency 500 Hz, what frequency does the driver of the car hear to 3 significant digits? how do i solve i know the answer is 519hz but how?

    asked by Victor on February 23, 2016
  32. 5th grade math

    Kallisto built a rectangular sign that measured 2 3/4 feet in length by 1 1/2 feet in width. To find the area, multiply the length and width. what is the area of the sign in square feet? Write an equation to solve. 2 3/4 1 1/2 +2 3/4 1 1/2 =11/1/2 ------

    asked by Beverly on March 5, 2015
  33. science

    How do you calculate the gravity of an object? equation needed h=1/2 gt^2 Solve the equation for g; g=2h/t^2 Set height is 2 foot, dropped small object from 2ft, timed at 0.3 seconds. Calculate the gravity of the object. Is this right? 2=1/2*9.8 t^2

    asked by Chris on September 12, 2011
  34. math word problem

    A car is traveling on a road that is perpendicular to a railroad track. When the car is 30 meters from the crossing, the car's new collision detector warns the driver that there is a train 50 meters from the car and is heading towards the same crossing.

    asked by Debbie on March 10, 2009
  35. math

    How to solve this??? The attendance at the game on two successive nights of Oakland A's baseball was 77,000. The attendance on Thursday's game was 7000 more than two thirds of the attendance at Friday nights game. How many people attended the baseball game

    asked by Sean charles on January 26, 2011
  36. math

    I am trying to solve a problem using Newton's equation, which is (-1/2)(9.8)t^2+ vot+ h. The problem says that a car rolls of a 120 foot high cliff. I know how to right the equation for this problem which would be (-1/2)(9.8 m/s) t^2 + vot + 37m. I am

    asked by Natalie on June 14, 2008
  37. Math

    Last year Alex earned a monthly payment of $250 and Ben earned a monthly salary of $180. This year each of them received it increase of 25%. This year how much more did Alex earn in one month than Ben? I do not understand how to solve this please help!

    asked by Arin on January 12, 2017
  38. I need help

    President Bush signed the new Bankruptcy Reform Act into law around April of 2005. This law went into effect in October of 2005. This means that filing a chapter seven bankruptcy is not as easy as it once was. How did the new bankruptcy law change the

    asked by Anonymous on June 15, 2006
  39. math

    Aley Company pays all its employees in a graduated commission scale: 3% on the first $30,000 sales, 5% on sales from $30,000 to $110,000, and 7% on sales more than $110,000. Jim Jones, an employee of Aley, has $130,000 in sales. What commission did Jim

    asked by Anonymous on May 7, 2012
  40. SCIENCE-URGENT

    Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are

    asked by Eddie on January 8, 2008
  41. Physics

    A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of work is required to compress the spring by 0.17 m. If the mass is released from rest with the spring compressed, it

    asked by BJ on January 8, 2010
  42. Ms. Sue PLZ HELP!!!(Civics)

    Which of the following is true about foreign and domestic affairs? A. They are completely separate types of policy issues that do not affect one another. B. Leaders must consider how one type of policy may affect the other since they relate. C. The

    asked by Anonymous on May 8, 2015
  43. Cell Biology

    The concept of receptor affinity does not only apply to the original receptor and ligand. For which of the following pairs of interacting molecules in signal transduction would a change in affinity of one for the other NOT affect how they work in signal

    asked by Kelsey on November 25, 2016
  44. Physics

    A car of mass 1380 kg rests on a hydraulic lift with a piston of radius 0.24 m that is connected to a second piston of radius 0.029 m. If the car is just barely lifted off the ground, what is the force at the second piston? my work: 1380kg/.24m = F/.029m

    asked by Wrenn on November 14, 2015
  45. physics

    The distance between two telephone poles is 59.0 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. draw a free-body diagram of the bird. (do this on paper. your instructor may ask you to turn in this work.)

    asked by ann on December 7, 2011
  46. physicssss

    Six grams of water changes from liquid to vapor at a pressure of one atmosphere. In the process, the volume changes from 1.3 cm3 to 2393 cm3. The latent heat of vaporization of water is 2.26 × 106 J/kg. Find the work done. Answer in units of J Find the

    asked by physicshelp on January 13, 2013
  47. Biology

    The concept of receptor affinity does not only apply to the original receptor and ligand. For which of the following pairs of interacting molecules in signal transduction would a change in affinity of one for the other NOT affect how they work in signal

    asked by Kelsey on November 25, 2016
  48. Physics

    On your wedding day you leave for the church 28 minutes before the ceremony is to begin, which should be plenty of time since the church is only 10.0 miles away. On the way, however, you have to make an unanticipated stop for construction work on the road.

    asked by Anonymous on October 3, 2012
  49. Science

    A car converts 1000 J of energy from a sample of fuel. 750 J of heat (thermal energy) is produced by the engine, 150 J of heat is produced in the transmission, drive train, etc., and 100 J of work is done to move the car. How efficient was the process of

    asked by KC on August 8, 2014
  50. physics

    A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 8.0 J of work is required to compress the spring by 0.17 m. If the mass is released from rest with the spring compressed, it

    asked by Anonymous on December 6, 2009
  51. grammar

    identify the verb pharse.picaso has been called the greatest and most influential artist of twenith century. i think its the greastest and most influential artist.if not please correct. identify the participal pharse. admired by many other artist, picassos

    asked by amiley on July 1, 2009
  52. Physics

    The distance between two telephone poles is 58.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.240 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor may ask you to turn in this work.)

    asked by Abdullahi A. on May 3, 2013
  53. Tutor

    Hi, I am a student a Michigan's connections academy and I need a tutor to help me out with some types of math, science, social studies. And a few others some stuff I don't understand and all of my teachers don't explain very good except for my math

    asked by Black Bandit on February 22, 2018
  54. Physics Spring

    A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J of work is required to compress the spring by 0.12 m. If the mass is released from rest with the spring compressed, it

    asked by Dan on November 15, 2010
  55. science

    mr mcmurry taked 4327 sips of mountain dew each day. each time he takes a drink he moves the bottle 45cm to his mouth and another 45cm to his mouth and another 45cm back to the table .If the bottle has a massof 567 grams (5.1newtons)how much work does Mr

    asked by Glenn on October 24, 2009
  56. vectors

    A 35-kg trunk is dragged 10 m up a ramp inclined at an angle of 12º to the horizontal by a force of 90 N applied at an angle of 20º to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15 m by the same force. Find the total work

    asked by luke on May 28, 2018
  57. physics

    A 1 kg object starts 3 meters from the ground on a 24 degree incline with a friction coefficient of 0.12. When it hits the ground, it collides and sticks to a 8 kg object. The coefficient friction on the horizontal surface is 0.24 How far do the objects

    asked by matt on December 21, 2008
  58. statistics

    18 workers at a large assembly plant were asked the time it took to commute to work. The data was analyzed in Minitab and the Descriptive Statistics for the data appears below. Descriptive Statistics: Minutes Variable N Mean Median TrMean StDev SE Mean

    asked by Anonymous on December 9, 2012
  59. science

    A 71.9-kg skier coasts up a snow-covered hill that makes an angle of 27.5 ° with the horizontal. The initial speed of the skier is 9.67 m/s. After coasting a distance of 1.50 m up the slope, the speed of the skier is 4.52 m/s. (a) Find the work done by

    asked by shaknocka on February 28, 2011
  60. Maths

    A plane is flying at an altitude of 880 m. Sarah is standing on the ground and she observes the angle of elevation to the plane as 67'40'. Twenty-five seconds later the angle of elevation had changed to 24'30'. (a) How far has the plane flown in that time?

    asked by Dana on February 5, 2016
  61. Accounting urgent

    Prepare the journal entries to record the following transactions on Panther Company’s books using a perpetual inventory system. (For multiple debit/credit entries, list accounts in order of magnitude.) (a) On March 2 Panther Company sold $853,700 of

    asked by jimmy on October 3, 2007
  62. Math

    Can you check my work and tell me if I did anything wrong? 1. With the functions: f(x) = x^2 + 3x and g(x) = -3 + x what is f(x) + g(x)? Answer: x^2 + 4x - 3 2. With the functions: f(x) = x + 4 and g(x) = x -3 what is (f*g)(x)? Answer: x^2 + x - 12 3. With

    asked by Jenny on January 26, 2015
  63. physics

    Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher

    asked by myra on May 15, 2012
  64. Physics

    A 55 kg skateboarder comes over the top of a hill at 5.0 m/s and reaches 11 m/s at the bottom. Find the total work done on the skateboarder between the top and bottom of the hill.

    asked by Darius on May 30, 2013
  65. physics

    Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher

    asked by myra on May 16, 2012
  66. Calculus

    If it takes 90N to stretch a spring 1/2 m beyond equilibrium, use an integral to find how much Work it takes to stretch the spring 5m beyond equilibrium

    asked by Jackie on February 20, 2012
  67. math

    THe width of a garden is 8 feet less than the length. If the area of the garden is 20 square feet, find the length and the width. could someone work this for me. I have but not right.

    asked by Keaton on May 18, 2010
  68. algebra

    1. Which number makes this equation true? v 2 + 10v + 16 = (v + 8)(v + ?) (1 point) 2 4 6 8 2. What is the factored form of x 2 + 6x + 8? (1 point) (x + 5)(x + 3) (x + 4)(x + 2) (x + 7)(x + 1) (x + 3)(x + 3) 3. What is the factored form of x 2 – 7x + 12?

    asked by fluffy on February 4, 2014
  69. Algebra II

    I cannot figure out how to work this one. I have tried working it like the example in the book but cannot come up with one of the answers given. Please help. Use log5(2)=0.4307 and log5(3)=0.6826 to approximate the value of log5=54. According to the book's

    asked by Lucy on March 29, 2008
  70. Science

    Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are

    asked by Eddie on January 7, 2008
  71. Math

    A factory produces 12000 plastic bottles by using 3 machines 8 hours a day. One machine is out of order now. The owner wants to produce 15000 plastic bottles, How many hours the remaining machines have to work to produce the required bottles?

    asked by Annaa on February 25, 2019
  72. SCIENCE-Urgent

    Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are

    asked by Eddie on January 7, 2008
  73. Math

    B is in the interior of

    asked by Marisol on October 4, 2009
  74. Physics

    Calculate how much work does a block of aluminum of mass 100 kg do if it is heated at P = 1 atm from 20 degrees to 660 degrees. n.b. - The density of solid aluminum at 20 degrees is p= 2.7 g/cm^3. When it is liquid at 660^C the density of the liquid state

    asked by Anonymous on October 22, 2013
  75. Math

    Last Saturday Michaela rented 4 movies from the video store. This Saturday she rented 2 movies. Let x represent the cost of renting each movie. Write and simplify an expression for how much more Michaela spent last week renting movies. Please help me work

    asked by Lisa on February 15, 2012
  76. English

    Thank you all for _____ _____ in our volunteer work. 1. Fill in the blanks with suitable expressions. 2. Put two English words in the blanks. 3. What are the appropriate words for the blanks? Complete the sentence by putting right words in the blanks.

    asked by rfvv on September 14, 2015
  77. physics

    A sample of monatomic gas (£^ = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. ¢XC, 6.00 litres, and 5.00 kPa, respectively, to a final volume of 7.00 litres. (a) What is the final pressure of the gas? (b) How

    asked by sarah on April 30, 2010
  78. chem. Combined Gas laws

    A gas takes up a volume of 17 liters, has a pressure of 2.3 atm, and a temperature of 299K. If I raise the temperature to 350K and lower the pressure to 1.5 atm, what is the new volume of the gas? Use the combined gas law here. I will be happy to critique

    asked by sam on April 16, 2007
  79. Math

    Lee Lu is paid $12.50 per hour, with overtime pay of time-and-a-half for Saturday work and double time for Sunday. Calculate her gross pay if she worked 35 hours during the week, 5 hours Saturday and 3 hours Sunday.

    asked by Niki on February 22, 2014
  80. maths

    Mandy can get 100kg of corn cob for $160 from Matt,on condition that she buys at least 100kg.From another supplier,she can buy 100kg or less for $1/cob,or more than 100kg for $0.60/cob.she gets $5/kg of con cobs or $1.25 for an individual con cob.if she

    asked by wa on August 18, 2014
  81. Differentiation

    Again, that all makes sense. Thank you very much. Thank you very much. I did get the derivative you show, but then divided through by 6 to get at the stationary points. Was that wrong? I'm only looking for a critique please, not answers! given: f(x)= −2x

    asked by CharlieGolf on June 20, 2007
  82. ap government and politics

    hi. my teacher assigned us 20 questions and i got most of them, but i couldn't find the answers to these 4 questions. i did try google but it didn't help much. could someone please help me? List and explain how Congress carries out its’ three primary

    asked by Anonymous on May 6, 2012
  83. Economic

    Matching type: Choose the best pair 1. Savings a. unspent income 2. Equitable Distribution of income b. economic goal 3. Labor Intensive Technology c. labor resources > capital resources 4. Monetary policies d. supply and demand of money 5. Macroeconomics

    asked by Venessa Churchill on May 17, 2019
  84. Math

    Karen wanted to find out how much waster was used when taking a bath and when taking a show. Karen found the dimensions of the tub filled with enough water to take a bath was 1.7 meters x 1 meters x 0.46meters and that the shower uses 5075 liters per

    asked by Precious on January 22, 2017
  85. math

    The shadow of a 5-foot tall post is 10 feet long. At the same time a tree casts a shadow that is 24 feet long. What is the height of the tree? A. 2 feet B.14 feet C. 12 feet D. There is not enough information to solve the problem

    asked by Anonymous on May 8, 2014
  86. algebra

    the perimeter of the small square is equal to one-half the perimeter of the large square, write and solve the an algebric equation to determine what the side lengths of the square are. small square is x large square is x+2

    asked by tina on November 1, 2016
  87. math

    by working 8 hour a day 13 farmers can plough a field in day 15 day . in how many day will 26 farmer plough the same field if they work 10 hours a day

    asked by mohan on February 6, 2017
  88. modern worl studies connexus

    1. Which statement best explains why the Louisiana Purchase of 1803 was important to the development of the United States? It created new taxes on imported goods. It resulted in immigration from France to the United States. It doubled the size of the

    asked by taytay on February 6, 2017
  89. critical thinking

    identify and classify the different fallacReprinted from "Animals Hold the Key to Saving Human Lives," Los Angeles Times, February 5, 1996, by permission of the author. Dr. Joseph E. Murray, a Nobel laureate, performed the first human kidney transplant in

    asked by barbara on January 27, 2010
  90. Science

    A 55 kg boy and 40 kg girl usa a rope while engaged in a tug-of-war. If the girl accelerates towards the boy at 5.1 m/s/s, what is the acceleration of the boy towards the girl? The force on the rope is the same both ways.

    asked by leafprincess on December 29, 2006
  91. Science

    You may have to decide a second theme be sure to show a variety of examples (plant, animal, and other kingdoms) from a variety of smaller habitats within your ecosystem. explain how your examples fit the extreme theme. this is ecology. Thank you for using

    asked by Nikki on January 8, 2007
  92. business

    hi guys can you please answer some of these stuff? its for my business case about business philos and strategies.. i need everyones opinions and answers.. here goes: 1. Using the operations system model, describe fully kripy kreme’s production

    asked by Dan on July 1, 2006
  93. chemistry

    3ca(s) + 2H3PO4(aq) -> Ca3(PO4)2(aq)+3H2(g) 1)a reaction between calcium and a solution of 1.2moldm-3 phosphoric acid produced 3 mol of H2 gas. a) Minimum volume of phosphoric acid would have been needed for reaction: I got 1.6cm3 b)Mass of calcium added

    asked by 0ooooooooo0 on September 28, 2017
  94. Chemistry

    Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1,

    asked by Bryan Josten on January 30, 2014
  95. Chemistry

    Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1,

    asked by Bryan Josten on January 31, 2014
  96. ENG 101

    Im taking my first college class in ENG 101 and i need to write an persuasive essay and Im having a hard time. I was wondering if anyone can help me come up with an outline or what I reasons that I can provide and I can come up with minor details. Here is

    asked by Jillian on December 2, 2011
  97. Project Management

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  98. chemistry 116

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