Questions Asked on
July 3, 2016

  1. chemistry

    Calculate number of electrons present in 9.5g of PO4^3-

    asked by vivek pathak
  2. Physics

    What mass would you hang on the right side of the system in the figure to balance it -- that is, to make the clockwise and counterclockwise torques equal? (Let x1 = 33 cm and x2 = 12 cm.)

    asked by Annabelle
  3. Math

    An only son inherited a 3/4 hectare lot. He decided to build a 40-door condominium on the lot. The floor are of the units is uniform and the total floor area of the entire condominium is 1/5 less than the area of the lot to provide for certain amenities.

    asked by Johnny
  4. Math

    In a group of 95 students , the ratio of students who like mathematics and science is 4:5 . if 10 of them like both the subjects and 15 of them like none of the subjects then by drawing a venn diagram,find how many of them like only mathematics and how

    asked by Abhi
  5. Pre-Algebra

    Identify the underlined place in 83.5851. Then round the number to that place. A. thousandths; 83.58 B. hundredths; 83.59 C. hundredths; 83.58 D. thousandths; 83.59 A?

    asked by quick help please
  6. Maths

    In class 8m, there are 27 pupils. There are twice as many boys as girls. How many boys are there?

    asked by Bob
  7. Chemistry Help Please!

    1) You have a protein at 20 ug/ml. Its MW =10,000. What is the concentration in molarity? Show work please! 2) You are asked to make 30 mL of a solution at 0.03M using the 0.10M stock solution. How many mililliliters of water do you use to make this

    asked by Kimberly
  8. Calculus

    Sand falls from a conveyor belt onto a conical pile at a rate of 6ft/mi^3. The radius of the base is always equal to two-thirds of the pile’s height. At what rate is the height of the pile changing when the radius of the base of the pile is 2 ft? I

    asked by Jace
  9. Prealgebra/probability

    A coin is tossed three times. Use a tree diagram to find the number of possible outcomes that could produce exactly two heads. I don't know how to write out a tree diagram on here, but I think this one is heads -> heads, tails -> heads, heads -> tails? A

    asked by Fawn
  10. math

    Write the decimal as a fraction ir mixed number. 0.89

    asked by dawn
  11. math

    Find the equation of the line passing through (-1 , -4) and parallel to -7x+6y=8 slope intercept

    asked by Fe
  12. Chemistry

    An element crystallizes in a body centered cubic unit cell. The radius of this element is 2.20A , and the density is .991 g/cm^3. how many moles of atoms are within one unit cell?

    asked by Lexi
  13. math

    one third of which number must be subtracted from 7/11 to give 24/25

    asked by hy
  14. Maths

    I am an even number between 65 and 75. My ones digit is greater than my tens digit. Who am I?

    asked by Manasa
  15. maths

    the diameter of a biycle wheel is 49 cm. how far will it travel in 50 revolutions?

    asked by Anonymous
  16. physics

    Cliff and Will are carrying a uniform 2.0m board of mass 75kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the

    asked by Leslie
  17. Math

    Find the equation of a straight line that is parallel to y=4x+1 and passes through (7,5)

    asked by Sam
  18. math

    an outfit consists of skirt and a blouse. if there are 6 skirts and 8 blouses from which to choose, then how many different outfits are possible? we assume that any possible combination can be worn together.

    asked by rose
  19. Math

    A certain amount of money is equally divided between some persons .If there were 8 persons more each would have got one rupee less. The number of the person and the amount are?

    asked by Mohali
  20. Economics

    The Southern Tree Trimming Corporation reported an accounting profit of $35,000 and a normal rate of return of 15 percent on capital and enterprise of $30,000. The opportunity cost of labor is $15,500. What is the economic profit? $110,500 X $19,500

    asked by Frank
  21. Physics

    I've looked at other questions posted like this and can't understand the problem or any of the answers. Could someone please show how to find for Cliff and Will? Cliff and Will are carrying a uniform 2.0m board of mass 75kg. Will is supporting the board at

    asked by Katie
  22. Physics

    Find the torque on the meter stick for each situation. Ignore the mass of the meter stick. At 1/2 meter there is a 1000g weight. At 1 meter on the same stick there is a 500g weight. What is the torque? Not understanding how to come up with this answer.

    asked by John
  23. writing skills

    "Whether you marry or not" goes an old saying,"your sure to regret it." (2)Today,however, psychologists are trying to reduce the regret spouses may feel about their marital situations.(3)One of the approaches taken by these psychologists has been to

    asked by ASIA
  24. writing skills

    Sentence 3: One of the approaches taken by these psychologists has been -------- to investigate the foundations for a happy marriage Which of the following is the best way to write the underlined portion of this sentence? If you think the original is the

    asked by ASIA
  25. writing skills

    Sentence 5: In particular,couples planning to marry may lower the chance of divorse by comparing their relationship to thoses of happily married couples. What correction should be made to this sentence? 1. remove the comma after particular 2. change

    asked by ASIA
  26. Physics

    An ion beam has a cross-sectional of 2.5 mm^2 and the charge delivered by it to a target can be expressed as q(t)=(.12 C/s^3)t^3 + (.24 C/s^2)t^2 - .45 C. Calculate the current density in the beam at t = 3.0 seconds. I used an integral from 0 to 3s. and

    asked by Amid
  27. writing skills

    Sentence 7: Sexual compatibility, for one thing,doesn't seem to be as important as earlier researchers thought; the ability to discuss problems, on the other hand, is. If you rewrote sentence 7 beginning with For one thing, despite what earlier

    asked by ASIA
  28. Physics

    The terminal voltage of a battery is 5.0V when 0.55A current is drawn from it, whereas the terminal voltage is 5.7V when a current of 0.180A is drawn. The emf of the battery is? The formula I used was V_(ab) = Emf - I*r First finding the r by taking the

    asked by Amid
  29. writing skills

    Sentence 8:In fact,most researchers beleive that the ability to discuss problems may be the single most important ingredient in a happy marriage. What correction should be made to this sentence? 1. remove the comma after fact 2. change the spelling of

    asked by ASIA
  30. writing skills

    Sentence 9: Moreover,how couples discuss their problems was equally important. what correction should be made to this sentence? 1. remove the comma after moreover 2. change discuss to discussed 3. replace their with there 4. change was to were 5. change

    asked by ASIA
  31. Physics

    In the figure, a small 0.125 kg block slides down a frictionless surface through height h = 0.958 m and then sticks to a uniform vertical rod of mass M = 0.250 kg and length d = 2.32 m. The rod pivots about point O through angle θ before momentarily

    asked by Andy
  32. Calculus

    A spider is descending vertically at a rate of 0.5 cm/sec. A lizard sits patiently on the ground at a spot 15 cm feet from the shadow of the spider (assume the shadow is directly below the spider). At what rate is the spider’s angle of elevation, θ,

    asked by Jace
  33. writing skills

    Sentence 12: In short, the best predictor of a happy marriage may simply be this: that the man and woman are able to communicate openly and productively before the marriage even takes place. What correction should be made to this sentence? 1. remove the

    asked by ASIA
  34. counseling

    Which of the following statements is most accurate with regard to Piaget's theory?

    asked by chantelle
  35. Physics

    I've tried everything and can't come up with the correct answer. Help! A liter of water has a mass of 1 kg and the mass of a water molecule is 18 amu. How many molecules of water are there in 4 L of water?

    asked by John
  36. math

    find the equation of the line with slope 8 and passing through (-5 , -6 ) slope intercept form

    asked by Fe
  37. Chemistry

    alculate the amount of energy released in the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 Å, and the radius of the selenide ion is 1.98 Å. Note that 1Å=10−10m

    asked by Bob
  38. math

    Find the equation of a line pass through (-2, 5) and ( 3,4 )

    asked by Fe
  39. chemistry

    You need to make a 300 ml of a .37M Na2 SO4 solution. How much Na2 So4 should you weigh out?

    asked by mika
  40. MATH

    Find the total surface area of a hexagonal prism 6ft tall with a regular base measuring 9ft on each and an apothem of length 7.8ft

    asked by Alno
  41. Maths

    A balloon (in a shape of a sphere) is inflated with helium at a constant rate of 125 cm^3/s. Calculate the rate of increase of the diameter when the volume is 2000 cm^3.

    asked by Ram
  42. math

    if 20 students are present out of 50 studentsin class. how many percent of absent?

    asked by billy
  43. physics

    A flywheel is rotating at speed of 1200 rpm its angular acclaration is 4 rad/s how many rotation it will be done before coming to rest

    asked by Rushi mudgal
  44. Sociology

    If you could make changes with regard to our social class stratification system, what changes would you make and why?

    asked by John
  45. Sociology

    What are the major differences between a functionalist or a conflict theorist when it comes to social class inequality?

    asked by Amber
  46. Biology

    A tabacoo plant hetrozygous for recessive trait of albunism is selfed and 1200 seeds are ontained. How many seedlings obtained from such seeds will have prevent genotype. 1) 900 2) 300 3) 600 4) 1200

    asked by sanjana
  47. maths

    The students standing in a straight line , holding some marbles , which are in A.P. The sum of marbles of first 8 students is 128. 3 times the difference of marbles of 2nd and 5th place students is 36 , find the A.P.

    asked by Milky
  48. Computer science

    While you can pass only one argument into a function, you can return as many values as needed from a function. True False A library function saves time for the programmer because it allows for code reuse. True False Each function should be flowcharted

    asked by Lies
  49. math

    Put parentheses for 6 + 1 × 1-20 = 29 is true

    asked by mujahith hasan


    asked by STEPHEN
  51. Math

    5/8 of the students in my class were boys. When 6 girls joined the class, the number of boys equaled the number of girls. How many students were in my class then? "What's the formula for this problem?"

    asked by Kevin
  52. math

    Mario's age is thrice the age of Martin. If the sum of their ages is 80 , how old are they?

    asked by Sam
  53. math

    the perimeter of a rectangle is 270 meters. find its dimension if the width is 3/4 of its length.

    asked by jackson
  54. physics

    4N force applied on a body mass 20kg then calculate work done in 3sec?

    asked by rohit
  55. Physics

    A car comes to a stop in 6s from a velicity of 30m/s. what is its acceleration? At the same acceleration, how long would it take the car to come to a stop from a velocity of 40m/s?

    asked by Laarni jhuzel Navidad
  56. Maths

    Which fraction is the largest 3/4, 31/50 or 17/40

    asked by Chloe
  57. Biology

    1. When and where was the first cell born? How did it happen? 2. What are the circumstances that make the appearance of the cell in this earth? 3. What are the differences between prokaryotic and eukaryotic cell? How about plant and animal cell?

    asked by mike
  58. college algebra

    A study found that athletes who rested after exhausting exercise had half life of lactic acid removal about 23 minutes. How long would it take to remove 90% of the lactic acid?

    asked by lee
  59. maths

    In the school 4/5 of the students are boys and the no of girls is 100.find the no of boys?

    asked by vanitha
  60. math

    In a school of 960 pupil,48 were absent on a day. Calculate the percentage absent that day?

    asked by Nana
  61. math

    a fish with a mass of 4kg causes a fishing pole to bend 10cm. if the amount of bending (b) varies directly as the mass (m), how much will the pole bend for a 7 kg of fish

    asked by Anonymous
  62. math

    W varies directly to the squard of a and inversely as the square root of d

    asked by Elscy
  63. MAth

    The wilkinson family drove 1.374 miles in 9 many miles did they drive on last day

    asked by Vince
  64. english

    Studying and analyzing others’ speeches help us to be better

    asked by fidel