Most popular questions and responses by Joyce
  1. Physics

    Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity at the highest point? What is its velocity when it returned to the elevation from where it is thrown ? What is its acceleration at the highest point? What is its

    asked on September 19, 2015
  2. math

    If a basketball player consistently shoots 80% from the free throw line and she takes 25 free throw shots throughout the course of a game, how many free throws can she be expected to make?

    asked on April 27, 2013
  3. physics

    A softball having a mass of 0.25 kg is pitched at 95 km/h. By the time it reaches the plate it may have slowed 10%. neglecting gravity, estimate the average force of air resistance during a pitch. if the distance between the plate and the pitcher is about

    asked on October 13, 2015
  4. Physics

    a 63-kg water skier is pulled up a 14.0 degree incline by a ropeparallel to the incline with a tension of 512 N. the coefficient ofkinetic friction is 0.27. What are the magnitude and direction ofthe skier's acceleration

    asked on September 28, 2010
  5. Chem

    A beaker containing 25.0 mL of 0.360 M H2SO4 spills on the counter. How much baking soda, NaHCO3, will be needed to neutralize the acid? H2SO4 (aq) + 2 NaHCO3 (s) -> Na2SO4 (aq) + 2 H2CO3 (l) GIVEN: - I've converted 25.0 mL to 0.025 L H2SO4. - 0.360 M

    asked on May 11, 2016
  6. UMA

    math what is the answer to this 732,178+167-542,137

    asked on May 23, 2015
  7. Math

    Which of the following is the LARGEST unit of volume? Kiloliter or Hectoliter or Dekaliter or Deciliter

    asked on October 26, 2013
  8. Science

    what power is expended by a weightlifter when lifting a 60kg barbell a vertical distance of 1.1m in a time interval of 2.0s

    asked on February 9, 2013
  9. physics

    An ideal gas is confined to a container with adjustable volume. The pressure and mole number are constant. By what factor will volume change if absolute temperature doubles

    asked on July 14, 2011
  10. statictics

    According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? Answer a. 0.40 b. 0.50 c. 0.80 d. 0.90

    asked on October 27, 2013
  11. science

    describe an experiment to demonstrate that an expired air contains carbon dioxide

    asked on April 3, 2019
  12. English

    The new drug proved to be highly efective,it has no side effects. A. PROPERLY CONSTRUCTED SENTENCE B. COMMA SPLICE C. LACKS PARALLEL PARTS D. HAS UNCLEAR PRONOUN Please post your answer, and we'll discuss it. A Please check this site.

    asked on October 19, 2006

    Noah Webster,author of the original Webster's Dictionary,believed that a dictionaryshould contain more than the definitions of words;therefore,he included their etymologies as well. A. PROPERLY CONSTRUCTED SENTENCE B. DANGLER C. RUN-ON D. COMMA-SPLICE What

    asked on October 19, 2006
  14. Physics

    . Determine the temperature, T that results when 150 g of ice at 0°C is mixed with 300 g of water at 50°C. Given heat of fusion, l of water = 3.35 × 105 J/kg, cwater = 4186 J/kg∙oC.

    asked on August 11, 2017
  15. Science

    How do u make this in a lewis dot structure? C2H3Cl3

    asked on March 7, 2011
  16. physics kinetic energy

    a) if a particle's speed decreases by a factor of four, by what factor does its kinetic energy change? b) particle A has three times the mass and twice the kinetic energy of particle B. What is the speed ratio VA / VB?

    asked on October 31, 2008
  17. Physics

    A 100 kg. man decides to go bungee jumping off a bridge. The bungee cord has a relaxed length of 10.0 m, and acts as a perfect spring with a stiffness constant of 80 N/m. What is the maximum distance below the bridge that he will reach? (he will fall 10.0

    asked on December 30, 2015
  18. Life orantation

    Description of recent service delivery protests

    asked on May 21, 2015
  19. physics help

    1. A roller coaster car starts from rest and rolls down a frictionless track, reaching speed fv at the bottom. a. If you want the car to go two times as fast at the bottom, by what factor must you increase the height of the track? b. Does your answer to

    asked on November 7, 2008
  20. Physics

    A bridge that was 5.0m long has been washed out by the rain several days ago. How fast must a car be going to successfully jump the stream? Although the road is level on both sides of the bridge, the road on the far side is 2.0m lower than the road on this

    asked on October 19, 2008
  21. math

    One hundred meters of fencing is available to enclose a rectangular area next to a river. Give a function A that can represent the area that can be enclosed in terms of x. Function : A = Answer x2 + Answer x

    asked on August 29, 2017
  22. math

    The cost of manufacturing a semi-circular window is the cost of the glass pane together with the cost of the framing material. When ordering this window, a customer specifies the length of the base of the window, shown as l l . If the cost of the framing

    asked on February 4, 2019
  23. Math

    The length of the side QR of a triangle PQR is 14.5cm

    asked on January 15, 2015
  24. phsyics

    an 8g bullet is shot into a 4kg block at rest on a frictionless horizontal surface. the bullet remains lodged in the block. the block movies into a spring and compresses it by 3cm. the force constant of the spring is 1500N/m. the initial speed of the

    asked on November 6, 2008
  25. Math 7th

    A meteorologist predicts an 80% chance of rain. Is this an example of experimental probability? Please explain why

    asked on November 30, 2017
  26. math

    Lexi and Marie had $250 altogether. After Lexi spent 2/5 of her money and Marie spent $40, they had the same amount of money left. how much money did Lexi have in the beginning ?

    asked on October 21, 2011
  27. Electric field

    when an electron is accelerated through a potential difference of 1 V, the kinetic energy at the end of the field is?

    asked on December 31, 2015
  28. eng/135

    Revising Messages: Conciseness Revise the following sentences, using shorter, simpler words. 9. The antiquated calculator is ineffectual for solving sophisticated problems

    asked on January 13, 2014
  29. Linear equations

    Please help me solve this problem- Find an equation for the line perpendicular to 6x+2y=-2 having the same y-intercept as -4x-3y=6

    asked on October 8, 2011
  30. college math

    cannot figure out the probability for the following: A pea plant i=must have exactly on of each of the following pairs of transis: Short(s) or tall(t); round(r) or wrinkled(w)seeds; yellow(y) or green(g)peas; and white(wh) or purple(p) flowers so A) How

    asked on June 10, 2011
  31. physics

    A stone is dropped off the science building and accelerates, from rest, toward the ground at 9.8 m/s/s. A curious physics student looks out the third floor window as the stone falls past. She happens to have a stopwatch and she finds that it takes 0.30 sec

    asked on September 23, 2010
  32. math

    a piece of carpetis in the shape of an isosceles trapezoid with a height of 30 inches and bases 40 and 60 inches. what is the area of the carpet?

    asked on February 24, 2016
  33. college math

    The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your

    asked on July 10, 2011
  34. 1 more phyiscs for today

    sorry for asking for help agen. a baseball catcher puts on an exhibition by catching a .150kg ball dropped from a helicopter at a height of 100m above the catcher. if the catcher "gives with the ball for a distance of .75m while catching it, what average

    asked on November 6, 2008
  35. Human Resources

    Can you think of any cultural problems U.S. hospitals might encounter as a result of recruiting nurses abroad?

    asked on November 18, 2012
  36. Physics- Ballistic pendulum

    A simple pendulum is made from a 2 kg. block of wood suspended from a light cord of length 1 m. When the pendulum is hanging in such a way that it is stationary and vertical, a bullet is shot horizontally into the block of wood where it sticks. The bullet

    asked on December 30, 2015
  37. Finance

    I am borrowing $ 10,000 for 5 years at 7% . Payments are made on a monthly basis and are determined using the add- on method. 1: How much total interest will I pay on the loan if I held it for the full 5 year term ? 2 : What would my monthly payments be

    asked on May 31, 2014
  38. Physics

    At the moment car A starts from rest and accelerates at 4.0 m/s^2, car B passes it, moving at a constant speed of 28 m/s. how long will it take car A to catch up with car B?

    asked on October 11, 2018
  39. Finance

    An investor is thinking about buying some shares of a company at $ 75 a share. She expects the stock to rise to $ 115 a share over the next 3 years. During that time, she also expects to receive annual dividends at $ 4 a share. Assuming that the future

    asked on June 24, 2014
  40. psychology

    The researcher's question of correlation between the cost of beer and the number of calories it contains? The researcher's question of correlation between the cost of beer and the volume of alcohol it contains?

    asked on June 14, 2014
  41. 1st grade Math Fair

    My school is planning a Math Fair. Each grade will compete with same grade team members. The rules are: TO make it fun and use Al. math strands . The problem is I don't know where or how to begin this project. Can anyone help?

    asked on January 1, 2010
  42. math

    from a group of women and 4 men, determine in how many ways a committee of people can be selected with no restrictions? b. 4 women c. 3 women and 1 men d. 2 women 2 man e. 4 men

    asked on August 28, 2008
  43. math,eng,phy,chem,bio,geography,economics

    if 8.99g of scandium and 8.99g of oxygen react to give scandium oxide and a leftover of oxygen 3.65g. what percentage of scandium oxide is the oxygen

    asked on January 17, 2016
  44. math

    Which point on the circle x^2+y^2-12x-4y=50 is closest to the origin? Which point is farthest from the origin? Explain.

    asked on September 22, 2010
  45. business and society

    As a business owner, information can be one of your key assets. why must you,as a business owner manage information as a resource? How might the internet and related communication technology change your business? What are some of the ways that information

    asked on April 15, 2007
  46. Maths

    The cash price of a gas cooker is sh. 9000, a customer bought the cooking gas by 15 monthly instalments of sh. 950 each installment. Calculate the carryin charge

    asked on September 30, 2017
  47. Math

    Write an inequality for the following. A swimmer dove off a 25 ft. Platform. He submerged 14 feet below the water.

    asked on January 21, 2015
  48. Chemistry

    A sample of toluene, C7H8 has a mass of 74.5 g. How many carbon atoms does it contain? How many hydrogen atoms does it contain? My work: I get 3.41 x 10^24 for carbon atoms And 3.90 x 10^24 for hydrogen atoms. Is this correct?

    asked on November 24, 2014
  49. math

    Corey needs 24 boards that are 47 1/2 inches long. How many feet of boards should he buy explain.

    asked on December 10, 2012
  50. physical chemistry

    a mixture of toluene and water boils at 90 degrees. calculate the vapour pressure at this temperature. Assume the atmospheric pressure to be 760 mmHg

    asked on March 19, 2017
  51. english

    Traditional african marriage is an advantage for men only,not women

    asked on July 29, 2014
  52. algebra

    why can’t we simplify 3x2+4x any further. If you were to incorrectly simplify this expression into a single term, what would that single term look like? Now, pick 1 or 2 numbers to plug in for “x” in 3x2+4x and your incorrectly-simplified single term

    asked on December 18, 2012
  53. chemistry

    identify and show the bond in the formation of the following; AsH3 BaO BCL3 SO2 ZnC2 CL2 K2S PH3 PLS I NEED AN ANSWER THANKS

    asked on June 19, 2011
  54. cost accounting

    fixed cost relating to staging a concert are 350,000. variable cost per patron are $5.00. the selling price for a tickets $25.00. The blue Saints band has sold 23,000 tickets so far. How many ticket does the Blue Saints band need to sell to achieve net

    asked on December 10, 2010
  55. IV calculations-medical math

    Heparin is to infuse at 9ml/hr. the IV solution is 25,000units heparin in 250cc D5w. what is the hourly dosage? what is the drip rate?

    asked on December 21, 2008
  56. Math

    Can some one explain these to me i need the factors. i am totally lost. thanks x^2+x-6 x^2+7x+10 x^2+5x+6 x^2+2xy+15y^2

    asked on March 31, 2008
  57. Math

    x^2+6x+27 m^2-m-12

    asked on March 30, 2008
  58. math

    Direct variation An airplane is traveling at a constant rate of 450 mi/h. Write an equation that shows how far the plane travels (D) in h hours. D = V * h = 450 h V is the speed, 450 miles/hour

    asked on August 5, 2007
  59. English

    What,if anything,is wrong with the following sentence? Do you see the pretty girl standing next to the car with the red boots on? 1. properly constructed sentence 2. misplaced part 3. run-on 4. fragment I THINK THE CORRECT ANSWER IS:Number 1 Am I Correct?

    asked on October 19, 2006
  60. QUESTION--Please Help

    What,if anything,is wrong with this sentence? Do you advise me to go to college or that I should get a job after high school? A. Properly constructed sentence B. Misplaced part C. Lacks parallel parts D. Run-on I think the answer is C, am I CORRECT? Joyce,

    asked on October 19, 2006
  61. English

    What,if anything, is wrong with this sentence? To be fit,you should get enough sleep, exercise regulary,and eat a healthy diet. 1.properly constructed sentence 2. comma splice 3.Lacks parallel parts 4.Unclear pronoun That sentence looks fine to me.

    asked on October 19, 2006
  62. math,eng,phy,chem,bio,geography,economics

    in an experiment of oxgen to hydrogen in water molecule. 9g of iron were heated in a current of hydrogen,6.5g of iron and 2.8g of water were formed using this data. determine the proportion by mass of oxygen to hydrogen in water

    asked on January 17, 2016
  63. Van de graaf question

    A moving belt in a van de graaf generator transfers charge from one point to another. If the belt is 0.1 m. wide, moves with a velocity of 10 m/s and carries a surface charge of +10^-5 C/m^2, determine the current that this generator represents.

    asked on December 31, 2015
  64. Electric field

    In a simple electric circuit 1.6 J of energy are supplied to a lamp in 0.10 s. The charge transferred through the circuit is o.20 C. The average current is?

    asked on December 31, 2015
  65. Math

    Diagram of a triangle PQR when QR is 14.5

    asked on January 15, 2015
  66. Math

    can someone please help me with the answer to this question? What payment should be made on the invoice in the amount of $ 3,400.00 dated Aug 7 if the terms of sale are 3/15, 2/30,n/45 and the bill is paid Aug 19?

    asked on May 21, 2013
  67. Business Math

    An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and net date ?

    asked on May 21, 2013
  68. Math

    What is the sum of the first 40 consecutive odd numbers?

    asked on August 19, 2012
  69. Algebra

    John rented a van for $250 for the week plus $.20 a mile. How far can John driveifhe only wants to spend a totalof $325? Write an inequality. Solve

    asked on July 19, 2011
  70. cost accounting

    market a new product for 2.00 a unit. fixed costs to manufacture this product are 100,000. the contribution margin is 40 percent. how many units must be sold to realize net income of 100,00 from this product?

    asked on December 10, 2010
  71. Cost accounting

    The company is planning to sell product z for $10 a unit. Variable costs are $6 a unit and fixed cost are $100,000. What must total sales be to break even?

    asked on December 10, 2010
  72. algebra

    -6q^2 -40q - 50 how do you solve this i am factoring and having problems

    asked on July 23, 2010
  73. chemistry

    what makes a good buffer? is it that it has a strong base and a strong acid? and why is blood a good buffer? is that because the oxygen it carries acts as a strong base?

    asked on March 31, 2010
  74. math grade 12

    solve for n if P(n,3)=2c(n,2), n{N

    asked on August 28, 2008
  75. Electric field

    The acceleration of an electron in an electric field with a strength of 7.0 N/C is?

    asked on December 31, 2015
  76. programming

    Peter decided to save money to buy a house. Enter this amount as well as the amount he will be able to save each month. He earns 0.8% interest per month while the amount is less than R70,000 and 0,7% interest per month if the amount is equal to or more

    asked on March 29, 2015
  77. Math

    does anyone know how to find the answer to the following questions: An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?

    asked on May 21, 2013
  78. algebra

    At local community college, it costs $150 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 150n stands for the total amount of money collected for this course. How much is

    asked on March 15, 2012
  79. math

    a liscence plate for a car must consist of a letter followed by two numbers. Each letter mus be an R, U or N. Each number must be a 2 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points in the sample.

    asked on June 12, 2011
  80. math

    if an angle has 40DEGREES and 80 dgrees what is the missing number?

    asked on April 3, 2011
  81. College Algebra

    Carl had packed 6 crates by 8 a.m. By 11 a.m., he had packed 24 crates. Find the average rate of change in crates packed from 8 a.m. to 11 a.m.

    asked on February 22, 2011
  82. algebra

    A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this

    asked on January 31, 2011
  83. cost accounting

    it a medium-size manufacturer of bicycles. during the year a new line call "Radical" was made available to Frank customers. The break-even point for sales of Radical is 250,000 with a contrbution margin ratio of 40 percent. Assuming that the profit for the

    asked on December 10, 2010
  84. accounting

    O'Hara Inc. made sales of $310,000 during 2008, it's first year of operations. Of this, $15,000 remained in accounts receivable at the end of the year. Additionally, the company paid and incurred $270,000 in expenses during the year. The company also

    asked on November 14, 2010
  85. Accounting

    Carpaitha Inc began 2009 with $140,000 in cash. The company plans to have $1,400,000 accrual basis sales revenue during the year, of which it plans to collect 80% in 2009 and the other 20% in 2010. The company plans to record the following expenses in

    asked on November 14, 2010
  86. algebra

    simplify 4(3x-(3-5y+7x)+3y

    asked on September 19, 2010
  87. Algebra

    I am working on Factoring the Trinomial and need help to solve this equation: t=3t^3+22t^2+8t

    asked on August 7, 2010
  88. algebra

    Height difference. A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height t seconds after it is tossed is 16t2  96t feet. The green ball is given an initial

    asked on July 23, 2010
  89. business

    I need help understandinddifferent ethics duty-based, consequence-based, rights-based, human nature, relativistic and entitlement-based

    asked on April 13, 2010
  90. accounting/220

    help with acc/220 week 9 fubak oroject Business plan

    asked on July 11, 2009
  91. science 275

    do you believe that humans can harvest forest resources in an environmentally frindly way? or, should national forest be left in their natural state in which resources are not used to benefit humans?

    asked on September 18, 2008
  92. Math

    If an item was purchased at $112.00 dollars after a 20% discount what was the original price of the item. I know the answer is 140.00 but I to know the formula that is used to get that answer. Thanks The $112 you are paying represents 80% of the original

    asked on May 22, 2007
  93. math

    How many acres will a 1.3 cu feet per second irrigate

    asked on August 1, 2017
  94. Algebra

    Hello...can you please let me know if I worked this problem correctly: 10Z2^ + 8z - 7 = 16z2^ + 48z - 12 0 = 6z2^ + 30z - 5 a = 6 b = 30 c = -5 x = 30 + or - (30 2^ -4(6)(-5) / 12 x = -30 + 31.937 / 12 = .161 x = -30 - 31.937 / 12 -5.161 Am I on the right

    asked on February 20, 2017
  95. Math

    A room measured 6 feet wide and 14 feet long. If they use blue and white tiles that are exactly 1 square foot, how many tiles will they need

    asked on August 17, 2016
  96. Electric field

    A 9.0 V potential difference exists between two metal plates which are 1.8 x 10^-3 m. apart. The acceleration of an electron that enters the region between these plates will be?

    asked on December 31, 2015
  97. Electric field

    The potential difference between the anode and the cathode of a vacuum tube is 2.0 x 10^2 V. Free electrons originate at the cathode with negligible speed and move to the anode. The speed with which the electrons arrive at the anode is?

    asked on December 31, 2015
  98. physics

    At a distance of 2.0 m. from a +8.0 x 10^-6 C charge, the magnitude and direction of the electric field will be?

    asked on December 31, 2015
  99. Physics

    A stone mass M thrown straight up with initial velocity V reaches a height H. A second stone of mass 2M, thrown straight up with an initial velocity 2V. What will be its height?

    asked on December 30, 2015
  100. chemistry

    how long would it take a 250# block of ice to melt in a room of 68 deg F

    asked on December 17, 2015


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