Questions Asked on
August 1, 2013

  1. PM

    You are creating a customer database for Modesto Nuts minor league baseball team. Draw a project network given the information below. Complete the forward and backward pass, compute activity slack, and identify the critical path. How long will this project

    asked by kim
  2. math

    how many ways can you make 45 cents with pennies, dimes, nickels,and quarters????? help me as fast as you can this is worth 1/2 my grade

    asked by kimmy in need it answer now
  3. physics

    A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.800 s. (a) How far (m)away is the explosion if air temperature is 22.0°C, neglecting the time taken for light to reach the physicist?

    asked by Justin
  4. Chemistry

    For a certain reaction, ΔH° = –76.8 kJ and ΔS° = –225 J/K. If n = 3, calculate E° for the reaction at 25°C.

    asked by Tayla
  5. Chemistry

    A compound with a percent composition by mass of 87.5% N and 12.5% H was recently discovered. What is the number of moles of Hydrogen in this compound? Atomic Mass: N = 14.01, H = 1.008

    asked by Anonymous
  6. chemistry

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations. 4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) 2 NO(g) + O2(g) 2 NO2(g) 3 NO2(g) + H2O(l) 2 HNO3(aq) + NO(g) What mass in kg of NH3 must be used to produce 4.4

    asked by Kris
  7. Analytical chemistry

    A dilute perchloric acid solution was standardized by dissolving 0.2445 g of primary standard sodium carbonate in 50 mL of the acid, boiling to eliminate CO2, and back-titrating with 4.13mL of dilute NaOH. In a separate titration a 25mL portion of the acid

    asked by Gloria
  8. Physics

    A swimmer heads directly across a river, swimming at 1.9 m/s relative to the water. She arrives at a point 50 m downstream from the point directly across the river, which is 79 m wide. (a) What is the speed of the river current? m/s (b) What is the

    asked by Jacob
  9. physics

    An 8 hour exposure to a sound level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.850 cm diameter eardrum so exposed?

    asked by Justin
  10. AP CHEMISTRY

    Commercial brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows. Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g) (Cu does not react with HCl.) When 0.5093 g of a certain brass alloy is reacted with excess HCl, 0.0953 g ZnCl2 is eventually isolated.

    asked by Kris
  11. biology

    In a laboratory population of diploid, sexually reproducing organisms a certain trait is determined by a single autosomal gene and is expressed as two phenotypes. A new population was created by crossing 102 pure–breeding (homozygous) dominant

    asked by penny
  12. physics

    19 cars in a circle at a boom box competition produce a 130 dB sound level at the center of the circle. What is the average sound level(dB) produced there by each, assuming interference effects can be neglected?

    asked by Justin
  13. math word problem

    sam needs to clean the window on his house. he has a 25-foot ladder and places the base of the ladder 10 feet from the wall of the house. A) how high up the wall will the ladder reach? B) if his windows are 20 feet above the ground, what is the farthest

    asked by Nick
  14. statistical analysis

    2. The Computer Systems Department has eight faculty, six of whom are tenured. Dr. Vonder, the chair, wants to establish a committee of three department faculty members to review the curriculum. If she selects the committee at random: a. What is the

    asked by Anna
  15. Math

    A ground observer sights a weather balloon to the east at an angle of elevation of 15º. A second observer 3 miles to the east of the first also sights the balloon to the east at an angle of elevation of 24º. How high is the balloon?

    asked by William320
  16. physics

    (a) By what factor is one sound more intense than another if the sound has a level 17.0 dB higher than the other? (b) If one sound has a level 32.0 dB less than another, what is the ratio of their intensities?

    asked by Justin
  17. physics

    The amplitude of a sound wave is measured in terms of its maximum gauge pressure. By what factor does the amplitude of a sound wave increase if the sound level goes up by 38.0 dB?

    asked by Justin
  18. biology

    In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!

    asked by Rosie
  19. Life orientation

    What are causes of social issue.what are five factors of social issue.the impact of the contemporary of social issue. How the contemporary social issue impact negative on local and global communities list five.give a detail description of your plan and

    asked by Emely
  20. Math

    The chief financial officer of a home health agency needs to determine the present value of a $10,000 investment received at the end of year 10. What is the present value if the discount rate is: a. 6 percent? b. 9 percent? c. 12 percent? d. 15 percent?

    asked by April
  21. statistical analysis

    According to the “January theory,” if the stock market is up for the month of January, it will be up for the year. If it is down in January, it will be down for the year. According to an article in the Wall Street Journal, this theory held for 29 out

    asked by Anna
  22. physics

    An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?

    asked by Jason
  23. home, school, and community

    which one of the following statements is NOT true when a partnership is created between a parent and a teacher a. parents are cpable of making major contributions to rheir childs education b.teachers share responsibility and pwer c. teachers inform

    asked by debra
  24. statistical analysis

    New Process, Inc., a large mail-order supplier of women’s fashions, advertises same-day service on every order. Recently, the movement of orders has not gone as planned, and there were a large number of complaints. Bud Owens, director of customer

    asked by Anna
  25. chemistry

    You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical has a mass of 800 grams. The total mass of the set-up is 1000 grams. The chemical is ignited by means of a magnifying glass

    asked by Kris
  26. CHEMISTRY

    Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the

    asked by Kris
  27. Life orientation

    Two example of social issue. Identify a social issue in your local community and describe it shortly .

    asked by Emely
  28. ap chemistry

    Consider the following unbalanced reaction. P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the reaction has a 79.8% yield? I did 212/.798=265.66 grams do I convert that to moles next?

    asked by Kris
  29. statistics

    Suppose a large-scale randomized experiment were conducted to compare two weight loss plans. At the end of the experiment, the weight loss for each subject (in pounds) was recorded. The p-value turned out to be .004, and a 99% confidence interval for the

    asked by Alexander
  30. Writing

    Please point out mistakes,give feedback, and grade. ACT prompt: In recent years, many schools have adopted a "Great Books"- based curriculum. These schools require students to study certain designated classic books of Western civilizations, arguing that

    asked by Anonymous
  31. ap chemistry

    BaO2(s) + 2 HCl(aq) H2O2(aq) + BaCl2(aq) What amount of hydrogen peroxide should result when 1.00 g of barium peroxide is treated with 15 mL of hydrochloric acid solution containing 0.0330 g of HCl per mL? So confused... >.

    asked by Kris
  32. physics

    You are riding in a boat whose speed relative to the water is 6.9 m/s. The boat points at an angle of 25.0° upstream on a river flowing at 15.1 m/s. Find the time it takes for the boat to reach the opposite shore if the river is 26.5 m wide.

    asked by LouLou
  33. biology multiple choice

    I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the answers, which in one way is good.(since you have to actually work for your answers) All I am asking of you people is that you run

    asked by alex
  34. Child Care

    Increasing numbers of communities are addressing the need for out-of-school care due to the relationship between A. teen pregnancy and inadequate care of infants. B. inadequate supervision of teens and teen pregnancy. C. working mothers and juvenile

    asked by Brenna
  35. Balthazar

    A 30 ml sample of of 0.150 m hydrazoic acid (ka = 4.50x10^-4 ) is titrated with a 0.100 m NaOH what is the ph after the ff additions of NaOH 30ml 45ml 60ml

    asked by Omi
  36. Algebra 1

    A bird sitting 16 feet above the ground in an apple tree dislodges an apple. After how many seconds does the apple land on the ground? (Assume no branches interfere with it's fall.) Use vertical motion model to solve this problem.

    asked by Need now
  37. chemistry

    Consider the following unbalanced reaction. P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the reaction has a 79.8% yield?

    asked by Kris
  38. math

    The directions on a box of muffin mix calls for 1-2/3 cup muffin mix and 1/2 cups water. If there is only 1 cup of muffin mix left in the box, how much water should be used?

    asked by terrie
  39. physics

    a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?

    asked by nuche Nina cajes
  40. Math

    The chief financial officer of a home health agency needs to determine the present value of a $10,000 investment received at the end of year 10. What is the present value if the discount rate is: a. 6 percent? b. 9 percent? c. 12 percent? d. 15 percent?

    asked by April
  41. Analytical chemistry

    A Kjeldahl analysis was preformed upon a 0.055 g sample of impure biguanide (C2H7N5, fw=101.1). The liberated ammonia, collected in 40 mL of 4% boric acid was titrated with 19.51 mL of 0.1060 M HCl. Calculate the percentage of biguanide in the sample.

    asked by Gloria
  42. math

    There were 100 pairs of socks 30% of them were sold on Monday and 40% of the remainder were sold on Tuesday. How many pairs of socks were left?

    asked by vincent
  43. pre algebra

    how many ways can you make 45 cents with pennies ,dimes, nickels, and quarters?

    asked by kimmy
  44. geography

    the sphere of influence of an organization that renders a service in your area.

    asked by masingita
  45. Stats

    There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets, but in one of the boxes, 49% of the tickets are marked “1” and in the other box 50.5% of the tickets are marked “1”.

    asked by Marian
  46. cultural diversity

    an early learning center that emphasizes "product" over "process" would. a.threaten most mainstream children. b. be child- directed, reflecting self- selection of activities and materials. c. ignore the principles of developmentally appropriate practices.

    asked by debra
  47. statistical analysis

    Compute the mean and variance of the following discrete probability distribution. x P(x) 2 .50 8 .30 10 .20 Please assist and guide accordingly. Thank you so very much!

    asked by Anna
  48. physics

    a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?

    asked by nuche Nina cajes
  49. solid mechanics

    A piece of material 15 cm long by 2.5 cm square is in compression under a load 100 kN.If the modulus of elasticity of the material is 105 GPa and Poisson's ratio is 0.25, find the alterntion in length if all lateral strain is prevented by the application

    asked by ripon
  50. math

    kenny can assemble a desk in 40 minutes while his friend paul can assemble the same desk in 20 minutes. kenny worked for 10 minutes and decided to ask paul to work together with him to finish the job earlier, so that they can go to see a football game. how

    asked by Algebra
  51. biology

    In a population that is in Hardy–Weinberg equilibrium for two alleles, C and c, 16% of the population shows a recessive trait. Assuming C is dominant to c, state the percent of the population shows the dominant trait? Show your work. Thank you!

    asked by Jen
  52. bus 123

    Carol Miller went to Europe and forgot to pay her $850 mortgage payment on her New Hampshire ski house. For her 55 days overdue on her payment, the bank charged her a penalty of $26. (assume 360 days). What was the rate of interest charged by the bank?

    asked by jeff
  53. chemistry

    What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each reaction?

    asked by Kris
  54. chemistry

    What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each reaction?

    asked by Kris
  55. math

    If 3 "A" cans can hold 4 "B" cans and 3 "B" cans hold 5 "C" cans than how many "A" cans are need to hold 20 "C" cans ?

    asked by vincent
  56. UNDERSTANDING OBSERVATION AND BEHAVIOR

    1. Which of the following scenarios would be the best example of a time when observation would be authentic assessment? A. A preschooler in the dramatic play area B. An infant on her first day of child care C. A toddler on a field trip to a local pumpkin

    asked by Nai
  57. math

    Find the equation of the line tangent to f(x)=3x^2-2x-1 at the point where x=2

    asked by gerald
  58. algebra

    Can someone help me find value of x. please show step by step examples 6/x = 7/x+3

    asked by Alaska Diamond
  59. algebra

    I need help figuring this out. If an object 3.9 feet tall casts a shadow 11.7 feet tall. How tall would the shadow be if the object were 17.4 feet tall? please show me step by step for me to understand. thank you so much

    asked by Alaska Diamond
  60. algebra

    Can someone show me step by step examples of simplifying 3√5/64 thank you

    asked by Alaska Diamond
  61. algebra

    I need help!!! I need to simplify √6 (9-√6) + 7√6

    asked by Alaska Diamond
  62. algebra

    Radicals are so confusing. Can someone show me step by step please. Im lost 5/8+√7

    asked by Alaska Diamond
  63. Algebra

    can someone help with this 8x/16x^2=5/x-4 solve

    asked by Cathy
  64. math

    User: Ariana Bouillon In Course: M/J Mathematics 2 V9 ( 2820) Instructor: Mrs. Susan Lafferty 08.03 Experimental Probability Warning: There is a checkbox at the bottom of the exam form that you MUST check prior to submitting this exam. Failure to do so may

    asked by luis
  65. math

    come on answer my question

    asked by kimmy in need it answer now
  66. algebraic

    40y-1 ,y=5

    asked by choi
  67. statistics

    After one month of operation the health information services at community health center determined that there were two reords misfiled out of the 450 active records. What is the filing accuracy rate for this area?

    asked by Johnnie
  68. math

    In the United States, personal income taxes are paid according to a specific scale. For example, individuals who earn a yearly salary between $31,000 and $31,150 must pay $4229 in taxes. Individuals who earn a yearly salary between $41,000 and $41,150 must

    asked by Adreanna
  69. STC

    Find the correct end behavior diagram for the given polynomial function P(x)=2.75x^4+3x^2+x-1

    asked by chompi
  70. statistical analysis

    Hi there, I am a senior trying to get some assistance with one of my many papers. Thank you!

    asked by Anna
  71. composition 2

    1. Explain why you think it is important to put observations in writing. How can observation enrich our writing? 2. At what point could making and observation halt or obstruct the writing process, and why?

    asked by shay
  72. maths

    quadratic equation solve the equation by factorization 27x^2 - 126x = 0 So x=? or x=?

    asked by gean
  73. Statistics

    A statistics student hands each of 300 classmates 2 cookies side by side on a plate. Of the 300 students, 171 choose the cookie that’s on their right hand side, and the remaining 129 choose the cookie that’s on their left. The student says, “That’s

    asked by Kit
  74. maths

    Quadratic equation Solve= square root(1-y) + square root(12+y) -5 =0

    asked by Chiew Poh Joong
  75. psychology

    evolutionary psychology and behavior genetics a. have little in common b. acknoweledge the interactions of heredity and evirronment c. focus on lerning and experience d. are two schools of thought first introduced by john b. watson

    asked by meka
  76. physics

    if a skydiver with a surface area of 2m sq falls at a steady speed of 55m/s with a force of 900N what is the pressure on her?

    asked by Anonymous
  77. Maths

    What is the smallest possible positive integer x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77 ?

    asked by KK
  78. child psychology in general

    the main problem with informal theories is they are based on . a.bias b.emotion c. tradition rather than study can someone please help thanks

    asked by susue
  79. children growing up

    a famous quotation on child development attributed to the Jesuits most emphasizes the importance of a.early childhood experiences b.adult supervision c.religious indortrination d.role models I know that letter c is wrong so im thinking it a

    asked by susue
  80. children growing up

    language development is initially triggered a.socially b.psychologically c.biologically d.by parent contact I know that letter d is the wrong answer .so im thinking the right answer is b I know I have posted these questions before but really need some help

    asked by susue
  81. physics

    a 2.00 kg rock is dropped from a bridge to the water 50.0m below. what is the velocity as it hits the water? what is its kinetic energy as it hits the water?

    asked by hannah
  82. Algebra

    If y is a positive integer, for how many values of y is 3/2y greater than 1/4 and less than 1/2? F. 0 G.1 H.2 I. 3 J.4 Check this. 1/2>3/2y>1/4 Only 4 and 5 work. Thus, there are 2 values of y.

    asked by Anonymous
  83. Statistics

    There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets, but in one of the boxes, 49% of the tickets are marked “1” and in the other box 50.5% of the tickets are marked “1”.

    asked by Stat
  84. english

    where could an apostrophe be put for plural women 1.women's or womens' pl clarify .

    asked by R S Telagathoty
  85. calc

    let y be the function of x defined implicitly by the equation x^2 -2xy +2y^4=1. find the value of x where y obtains its maximum value.

    asked by barbra
  86. math

    how many popsicles are in 2 1/2 dozen

    asked by loli
  87. biology

    Explain how new species can originate without geographical barriers.

    asked by Annie
  88. accounting

    How do I figure out taxes associated with stock purchased in 2010 for $1000 held for 5 mths. Then sold for $1200 I am in the 28% tax bracket? (I must use the IRS regulations for capital gains in effect in 2010.) I really want to understand how to work this

    asked by Tricia