Tracey

Popular questions and responses by Tracey
  1. physical science

    a weightlifter raises a 70 kg barbell from the floor to a height of 2.2m in 1.2s. What was his average power output during the lift?

    asked on September 19, 2012
  2. chemistry

    Write and balance the chemical reaction when gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (CH4) & liquid water

    asked on April 18, 2010
  3. physical sciencei

    is the work needed to bring a car's speed from 0 to 10 km/h less than, equal to or more then the work needed to bring its speed from 10 to 20 km/h? if the amounts of work are different, what is the ratio between them?

    asked on September 19, 2012
  4. English Check answer

    The birds "chirped" loudly every morning before sunrise. (1 point) action verb (THIS ONE) helping verb linking verb none of the above

    asked on January 6, 2015
  5. physical science

    a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration of 1 m/s2. (b) what force would be needed to give an accelerattion of 10 m/s2 ?

    asked on September 14, 2012
  6. statistics

    Suppose X has a mound-shaped distribution with sigma=9. A random sample of size 36 has a sample mean 20. Is it appropriate to use a normal distribution to compute a confidence interval for the population mean u?

    asked on June 5, 2012
  7. physical science

    the 200g head of a golf club moves 40 m/s in a circular arc of 1.2m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? ignore the mass of the clubs shaft.

    asked on September 14, 2012
  8. PHYSICS

    Search: a 1.0 kg mass weighs 9.8 n on earths surface and the radius of the earth is roughly 6.4x10 to the 6 m. what is the mass of the earth and the average density of Earth

    asked on December 8, 2010
  9. chemistry

    what is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97 atm & temp of 32 C? R= 0.0821 L atm/mol K

    asked on April 18, 2010
  10. Physics

    Two spheres A and B, where A has twice the mass of B, are projected at the same horizontal velocity off the edge of two different height shelves. Sphere A leaves from a height of 2.0 m. Sphere B leaves a shelf 1.0 m off the floor. If both spheres leave the

    asked on November 27, 2010
  11. eco

    what factors could influence the suppy and demand of a correctional officer's position. Location of the prison/jail -- whether it's near a high crime area. The state's, county's, city's funds for jails -- whether they are releasing prisoners because of

    asked on June 25, 2007
  12. college algebra

    Determine the principal P that must be invested at rate r = 3 1 2 %, compounded monthly, so that $700,000 will be available for retirement in t = 13 years. (Round your answer to the nearest cent.) P = $

    asked on March 28, 2012
  13. Chemistry

    A buffer containing 0.2832 M of acid, HA, and 0.1504 M of its conjugate base, A−, has a pH of 2.36. What is the pH after 0.0015 mol NaOH is added to 0.5000 L of this solution?

    asked on March 16, 2012
  14. PHYSICS

    which has more inertia, a mouse or elephant?

    asked on December 19, 2010
  15. chemistry

    how many moles of butane gas c4h10 react to produce 3.50moles of water?

    asked on November 4, 2010
  16. math

    Class has 28 students. 23 like basketball. Also, 15 like baseball. 12 like both. How many students do not like either.

    asked on March 29, 2011
  17. Chemistry

    This is a mulit step problem How many grams of barium phosphate are produced from the reaction of 3.50g of sodium phosphate and 6.4g of barium nitrate? The other product is sodium nitrate. 1. Write the balanced equation for the reaction 2. How many grams

    asked on October 5, 2006
  18. Business Math

    Solve the following by using the present value formula. Compound Amount- $675 Term of Investment-15 months Nominal Rate (%)- 2.7 Interest Compounded quarterly Present Value ___________? Compound Interest _________?

    asked on July 15, 2016
  19. Chemistry

    I am having so much trouble understanding how to classify reactions as precipitation, acid base, or oxidation reduction. In one example in particular, it reads Iron II oxide reacts with oxygen and water to yield Iron III hydroxide. I wrote out the equation

    asked on April 21, 2015
  20. English help

    the date, time, and location of a robbery would most likely be included in? A feature article an editorial article a hard news article a letter to the editor I thought a featured article but really not sure

    asked on January 7, 2015
  21. statistics

    At a local college, 81 of the male students are smokers and 729 are non-smokers. Of the female students, 350 are smokers and 350 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the

    asked on September 8, 2014
  22. science

    what is the relationship between a scientific law and scientific theory? what is the difference between a hypothesis and a theory?

    asked on December 22, 2010
  23. Business Algebra

    Part I: As a financial planner a client comes to you for investment advice. After meeting with him and understanding his needs, you offer him the following two investment options: Option 1 (refer to section on Mathematics of Finance in your text.): Invest

    asked on December 21, 2010
  24. physics

    A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero

    asked on November 28, 2010
  25. Economics

    Suppose that the price of a stock is $50 at the beginning of a year and $53 at the end of the year, and it pays a dividend of $2 during the year. Calculate the stock’s current yield, capital-gains yield, and the return. Show your work for three separate

    asked on October 19, 2010
  26. chemistry

    Calculate the molar mass of baking powder (NH4)2CO3

    asked on April 18, 2010
  27. math

    find the unit rate 68 mi on 2 gal

    asked on December 2, 2009
  28. Poetry

    I am supposed to give a literal explanation of this poem, but I am really confused by it. Your help will be much appreciated. Snow & Ice by Quincy Troupe ice sheets sweep this slick mirrored dark place space as keys that turn in tight, trigger pain of

    asked on April 13, 2007
  29. Writing

    How can you determine a source's biases? You have to do some research. Sometimes it takes a while, as it is not obvious. Bias often takes the form of legality, in sanctions, sentences, and other official act. The root cause may be buried in deep personal

    asked on March 12, 2007
  30. Math

    You borrow $1,200 at a rate of 4.5% for a period of 6 months. How much will you repay at the end of 6 months? A. $27 B. $54 C. $1,173 D. $1,227 I've been seeing a lot of controversy about whether the answer is C or D, and I'm very confused.

    asked on February 27, 2020
  31. math

    You are fitting a new kitchen and measure the following lengths of pipe. Subtract the shortest length from the longest. 0.81 m 1.08 m 0.8 m 180 cm 18 cm answer is m

    asked on February 15, 2020
  32. english

    Which of the following editing techniques helps keep screen direction constant

    asked on March 12, 2019
  33. Math

    A recipe calls for5oz of flour for every 4oz of milk. Let x be the amount of milk used. Let y be the amount of flour used. Express the relationship with an equation. Is the relationship proportional? If you use 14oz of milk, how much flour should you use?

    asked on January 25, 2017
  34. Business Math

    Solve the following by using the present value formula. Compound Amount- $700 Time Period(years)-8 years Nominal Rate (%)- 1.5 Interest Compounded monthly Compound Amount___________? Compound Interest _________?

    asked on July 15, 2016
  35. science

    Can you unscramble these two words? ACGIJJ 2nd word is KMNPKSU

    asked on March 29, 2016
  36. Prealgebra

    A Triangular piece of land has sides 20m, 25, and 20.5. Find the perimeter of the triangle. 20.25.20.5 = 65.5. P65.5 Is this right. Thank you!

    asked on March 9, 2016
  37. Algebra

    given that f(x) = 3x + 7 and g(x) = (-x)cubed + 1, find (fog)(-2)

    asked on July 4, 2015
  38. math

    Wanda bought a pair of jeans for $32.50.She can purchase a second pair for 40% off the regular price.How much will she spend on two pair of jeans?

    asked on March 24, 2015
  39. physics

    Help: A 2 meter long, uniform bar with a mass of 46 kg is suspended from a pin so it can rotate freely. It is supported by a cable half a meter from the end. Find the tension force in the cable and the magnitude and direction of the reaction force at the

    asked on March 18, 2015
  40. Physical Science HELP

    What and how do I balance this if it needs to be done? Help please Balance the equation, if necessary, for the reaction between zinc and iodine. Zn + I2 „_ 2ZnI2

    asked on January 7, 2015
  41. Math

    A school has 30 rows of seats. Each row has 28 seats. How many seats are there?

    asked on October 8, 2014
  42. science

    Why scientists used only mice from the same pure-bred strain is so that

    asked on October 27, 2013
  43. math

    an airplane climbs at a rate of 66.8 feet per minute. It descends at twice the rate that it climbs. Assuming it descends at a constant rate, how many feet will the aitplane descend in 30 minutes.

    asked on April 7, 2013
  44. english

    explain how content purpose and audience and tone impact academic writing. not good in writing papers

    asked on January 11, 2013
  45. algebra - absolute value

    i'm doing absolute value in open sentences and then graphing them. how would you solve |t-4| > t-4 ?

    asked on November 29, 2012
  46. Absolute Value in Open Sentences

    For the problem |t-4|>t-4 how would you graph it?

    asked on November 29, 2012
  47. Pre-cal

    Two lookout towers are situated on mountain tops A and B, 4 mi from each other. A helicopter firefighting team is located in a valley at point C, 3 mi from A and 2 mi from B. Using the line between A and B as a reference, a lookout spots a fire at an angle

    asked on November 28, 2012
  48. reading

    story was a little confusing... can someone give me a plot summary of Milk by Ron Carlson

    asked on October 26, 2012
  49. algebra

    A stone dropped from rest travels 160 ft the first 3 seconds. How far will it have fallen at the end of 5 seconds?

    asked on October 15, 2012
  50. physical science

    a 70 kg man and 50 kg woman are in a boat when its motor fails. the man dives into the water with a horizontal speed of 3 m/s in order to swim ashore. if he changes his mind, can he swim back to the boat if his swimming speed is 1 m/s? If not, can the

    asked on September 19, 2012
  51. physical science

    a yo-yo is swung in a vertical circle in such a way that its total energy KE and PE is constant. At what point in the circle is this speed maximum? A minumum? why? (b) if the yo-yo has a speed of 3 m/s at the top of the circl, whose radius is 80 cm, what

    asked on September 19, 2012
  52. physical science

    a 1kg object has kinetic energy of 1J when its speed is?

    asked on September 19, 2012
  53. physical science

    the acceleration of gravity on the surface of venus is 8.9 m/s2. would a ball thrown upward from venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?

    asked on September 14, 2012
  54. math

    f(17)=12 f(7)=6 f(x)=?

    asked on September 10, 2012
  55. Honors Geometry

    Topic: Distance in Coordinate Plane Determine the value(s) of n if... J(n, n+2), K(3n, n-1), JK=5

    asked on September 6, 2012
  56. Business

    Envision that you run a highly successful tattoo and piercing parlor in a small West Coast city. You are fairly certain that between you and your key competitor, you have saturated your target audience of people in their teens and 20s. To grow your

    asked on September 5, 2012
  57. physical science

    how many square feet are there in an area of 1.00 square meters( 1 ft.=0.305)? use the proper number of significant figures in the answer.

    asked on September 2, 2012
  58. science

    describe the efficiency of energy tranfer and how the amount of energy available at each trophic level affects the structure of the ecosystem>

    asked on July 12, 2012
  59. algebra

    The area of a state is 7 times the area of another state. the sum of the areas are 32,000,000. what is the area of each state

    asked on June 4, 2012
  60. Chemisty

    If 59.0 mL of 0.40 M HI is mixed with 100. mL of 0.10 M KOH what is the resulting pH?

    asked on March 16, 2012
  61. macroeconomics

    if retiree benefits were frozen what would happen to total expenditures

    asked on February 19, 2012
  62. Economics

    One year ago, you bought a bond for $10,000.00. You received interest of $400.00 at the end of the year, as well as your $10,000.00 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.

    asked on January 28, 2012
  63. science

    Ho many millilitres of sucrose is needed to make 25 L of liquering soluton at 20% v/v

    asked on January 2, 2012
  64. science

    How many grams of copper sulfate is needed to make 1125L of 25 ppm solution

    asked on January 2, 2012
  65. science

    If 100g of CuSO4 took part in the following reaction how much Cu(0H)2 would be formed CuSO4 + 2NaOH to Na2SO4 + Cu(OH) 2

    asked on January 2, 2012
  66. science

    If 20g of Ca(0H)2 took part in the following reaction, how much CaCl2 would be formed. Ca(0H)2 + 2HCl to CaCl2 +2H20

    asked on January 2, 2012
  67. Math

    3x² - 4 = 23

    asked on October 6, 2011
  68. Science

    As the angle between the direction of the applied force in the direction of movement increases from zero to ninety what happens to the fraction of the force that contributes to the work?

    asked on October 6, 2011
  69. history

    what is vigilantism and how and when does it arise? (political philosophy)

    asked on October 2, 2011
  70. history

    What system of government did Plato recommend in The Republic?

    asked on October 1, 2011
  71. history

    The three main ideals that all political systems strive to achieve are freedom order and equality. Why do these values compete with one another?

    asked on October 1, 2011
  72. MATH

    Five cards are dealt from a well-shuffled standard deck. using combinations, write an expresssion for the probability all are hearts

    asked on September 28, 2011
  73. MATH

    Five cards are dealt from a well-shuffled standard deck. using combinations, write an expresssion for the probability all are hearts

    asked on September 28, 2011
  74. MATH

    From a standard deck of cards, two cards are randomly drawn, one after the other without replacement. The color of each car is noted. Which is less likely to occur: two red cards or a red card and a black card? Explain.

    asked on September 28, 2011
  75. hum/176

    Overview of themes of the impact of the internet on politics

    asked on June 5, 2011
  76. english

    Which version of the American Dream is more realistic, Jay Gatsby or Tom Joad?

    asked on May 24, 2011
  77. MATH

    You purchased 150 ft. of chain that normally sells for $0.15 per inch. You were charged $22.50 for the sale. Was the price correct? If not, what is the correct price and what mistake was made?

    asked on May 5, 2011
  78. math

    Volume of Aluminum Foil. One cubic centimeter of aluminum weighs 2.7 grams. If a piece of aluminum foil weighs 5.4 grams, find the volume of the aluminum foil.

    asked on March 31, 2011
  79. Math

    If the following amounts of lumber need to be delivered to 2 different staging areas at 4 different job sites, how many total boards of each size will you need? 1.65:2x4s 2.45:2x8s 3.25:2x10s How to work this problem.

    asked on February 12, 2011
  80. FAST MATH HELP

    Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do

    asked on January 13, 2011
  81. Math

    Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do

    asked on January 13, 2011
  82. Math

    Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do

    asked on January 13, 2011
  83. PHYSICS

    what is the different between a scalar and vector?

    asked on December 22, 2010
  84. budget and forecasting

    Using the table “Gasoline Sales Time Series”, calculate the forecast for gasoline sales (in thousands) for Week 13 using a three day moving average. Gasoline Sales Time Series Week Sales (000’s of gallons) 1 17 2 21 3 19 4 23 5 18 6 16 7 20 8 18 9 22

    asked on October 31, 2010
  85. Economics

    One year ago, you bought a bond for $10,000. You received interest of $400 at the end of the year, as well as your $10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work

    asked on October 19, 2010
  86. Economics

    Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.

    asked on October 19, 2010
  87. Chemistry

    DrBob222 - can you set up the equation for the volume problem, i don't have a clue... Is this Charles Law? I know how to change C to K you add 273, but I don't know what figures go where in this formula PV=nRT......

    asked on April 18, 2010
  88. chemistry

    DrBob222 - for molar mass do you use significant figures? If so would the answer be 0.05 (3.55/65.39)3.55 has 3 SF's correct?

    asked on April 18, 2010
  89. chemistry

    What is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97atm and a temperature of 32 degrees celius? R=0.0821 L atm/mol K

    asked on April 18, 2010
  90. Chemistry

    What is the amount in moles of 3.55g of zinc(Zn)

    asked on April 18, 2010
  91. Social studies

    How did the Peace of Augsburg affect the Catholic Church?

    asked on December 28, 2009
  92. Chemistry

    Consider the following electron configuration. (σ3s)2 (σ3s*)2 (σ3p)2 (π3p)4 (π3p*)4 Select four species that, in theory, would have this electron configuration.

    asked on October 9, 2009
  93. francais

    Please could you proof read my work. Thanks J'essaie de manger sainement, je mange 3 ou plus de fruit et légumes et un morceau de chocolat tons les jours. J'adore le fromage mais je connais gras. J'aime boire l'eau parce que saine. J'exerce

    asked on September 30, 2009
  94. college

    what are some of the changes the United States has made to policies concerning treatment of muslims and arabic members of society

    asked on August 6, 2009
  95. Physics

    Q: From the Bohr model of the Hydrogen atom, calculate the minimum amount of energy (in eV) an electron in the lowest orbital would need to free it from its proton (i.e., to ionize the atom). A: would I use the equation: En = - 13.6 / (n^2) ? If so, an an

    asked on May 26, 2009
  96. Human resources management

    17. Andy Liu is employed by National Electronics Company. He works on a team that manufactures the company’s best-selling TV from start to finish. Andy belongs to a _______ team. A. self-directed C. process-improvement B. project D. cross-functional

    asked on September 12, 2008
  97. college

    An HR manager’s duties can be grouped into the following categories: advice and counsel, service, policy formulation and implementation, and employee advocacy. In practice, these activities often overlap. For example, time spent counseling an employee

    asked on September 12, 2008
  98. college

    Biographical information blanks are difficult for applicants to fake because A. the questions don’t have predictable, correct answers. B. they require detailed answers. C. they’re administered by extremely knowledgeable interviewers. D. applicants are

    asked on September 12, 2008
  99. Social Studies

    How was/is the law and order kept in the society? We're learning about the government of Ancient Rome. Full Question: How was/is the law and order kept in the society of Ancient Rome and how did the government ensure the society would follow the law?

    asked on May 24, 2008
  100. Science

    an object has a colume of 25 cm3 and a mass of 50g. Antoher object has the same volume of 25 cm3 and a amass of 75 g. Caluculate the densities of both objects. Show all work. INclude the correct unites with your answer.

    asked on September 6, 2007

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