Posts by Em

Total # Posts: 291

  1. Physics

    A tennis ball of mass 58g is thrown 5m into the air before served. Calculate the velocity of the tennis ball just before it is hit with the tennis racket.
  2. HIM occupany percentage

    I did not understand where the 15, and 16 in the calculation came from
  3. HIM occupany percentage

    A total of 76,006 IP service days of care were given at University Hospital during this year. The bed counts changed from a count of 200 at the beginning of the year to 220 on March 15, and then to 230 on July 1. The count was reduced to 210 on November 15 and it remained at ...
  4. HIM math

    A total of 76,006 IP service days of care were given at University Hospital during this year. The bed counts changed from a count of 200 at the beginning of the year to 220 on March 15, and then to 230 on July 1. The count was reduced to 210 on November 15 and it remained at ...
  5. History

    spain
  6. physics

    Chuck Wagon travel with a constant velocity of 0.98 miles/minute for 9.3 minutes. Chuck then decelerates at -0.11 miles/min/min for 1.8 minutes. Determine the total distance traveled by Chuck Wagon (in miles).
  7. History

    Try to be less hostile, Sue. Jeez.
  8. English

    The importance of being earnest play please help me 20. Briefly explain two ways the play is either reflective of the Victorian culture or shows the influence of Restoration comedy. Respond in complete sentences. 21. Identify and explain how symbolism is used in the play. ...
  9. Econ

    If the rate of inflation is 4% per year, how long will it take for prices to double?
  10. math

    the flight path of a firework is modelled by the function h(t)=-5(t-5)^2+127
  11. history

    need answers fast!!!!!!What impact did norbert Rilliexus invention have on sugar industries?
  12. American Government

    There is another similar version of the test. 1. B. government corporations 2, 3, and 4 are the same as above. 5. C. Preside over the senate 6 & 7 are the same as above. 8. D. International Cooperation and the rest are the same as above
  13. American Government

    B
  14. Math

    The perimeter is 67.5 inches. If the first side is 15inches than the second side is 15+7.5= 22.5 because if you use a tape diagram the answer in each section is 7.5. Then that means your side 2 is 22.5 inches, then you do 22.5+7.5=30. Then just add them all together. You get a...
  15. Math

    Write a divison equation that has a solution of -20
  16. US Govt

    It also comes up as D sometimes. But it is still whether a person born outside of the US is a "natural born citizen"
  17. Physics trajectory

    A ball rolls off a deck at a speed of 0.7 m/s. The deck is 4.5m above the street. How long does it take for the ball to reach the street?
  18. Math

    Let n be any counting number. Using the two questions above as a guide, how many subsets does the set {1,2,3,...,n−1,n} have? Prove it as well. First question:Including itself, how many subsets does the set {1, 2, 3} have? List them. Second Question: Including itself, ...
  19. Math

    in a survey, 15 people said they played basketball, hockey and volleyball. in addition 20 people said they played basketball and hockey. draw a venn diagram to determine how many people in the survey said they played only basketball and hockey.
  20. Physics

    If it takes 5 seconds for the baseball to fall, how far from the tower will it land? I used vertical distance formula dy=1/2(g)t^2 and got 122.5 but its one of the answers in the multiple choice. Please help.
  21. Pre alg

    Simplify: 3x^2+6-2x+5x-4x^2+9 A.-x^2+3x+15 B.7x^2+3x+3 C.x^2-3x+15 D.-x^2+7x+15 I think it's D.
  22. pre-calculus

    Rewrite the following expression as an algebraic function of x sin(arccos(x/2)) I know sine is y, which is opposite over hypotenuse. I also know that arccos is the inverse of cosine. I'm confused on what the question is asking and what to do with the x. Please help! Thanks
  23. Geometry

    i have no idea
  24. Physics

    A block of mass 0.585 kg is placed on the end of a spring which has a stiffness of 294 N/m. It is pulled down 2.80 cm and released. What is the frequency of oscillation?
  25. Physics

    A block with a mass of 0.357 kg is attached to a spring of spring constant 599 N/m. It is sitting at equilibrium. You then pull the block down 4.80 cm from equilibrium and let go. What is the amplitude of the oscillation? I know A=D/F... I keep getting the wrong answer though...
  26. Chemistry

    At a certain temperature, the reaction has Kc = 5 x 108. If a reaction mixture at equilibrium contains 0.26 M of H2 and 0.087 M of Cl2, what is the concentration of HCl?
  27. Physics

    Suppose under the certain conditions, the maximum force of friction that could act on a certain car was 3.35*10^3 N. The mass of the car is 857kg. What is the maximum possible centripetal acceleration of the car going around a bend? I know the equation for this is a=(4piR)/(T^...
  28. Physics

    A car is traveling around a bend at a speed of 12.4 m/s. The bend has a radius of curvature of 66.7 m. Friction is the only force acting towards the center of the circle. If the mass of the car is 862 kg, what is the force of friction required to make the car go around the bend?
  29. Physics

    A ball is attached to a center post by a string that is 0.382 m long. The ball is moving in a circle on a frictionless table top at a speed of 1.28 m/s with a radius of 0.382 m. What is the centripetal acceleration of the ball?
  30. Physics

    If the angular velocity, ω, changes from 7.07 rad/s to 24.2 rad/s over a time of 6.42 s, what is the angular acceleration, α?
  31. Physics

    If a wheel turns around 6.00 complete rotations, what would the angular displacement of that wheel be in radians?
  32. Physics

    Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 84.0–g snake and raises it 2.30 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch? I got the first question ...
  33. Physics

    Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 84.0–g snake and raises it 2.30 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?
  34. CALC HELP!

    Find an equation of the tangent line to the graph of y= x+ (4/x) at the point (4,5). I can't figure out the answer to this. It's supposed to be y=3/4x +2 but I can't get that.
  35. Science

    So it's D?
  36. Science

    1. Which of the following explains why sunlight is important to the aquatic ecosystems? A. Sunlight provides a source of heat and energy to increase water temperatures. B. Sunlight keeps harmful bacteria from taking over aquatic ecosystems. C. Sunlight makes it possible for ...
  37. CHEM QUESTION

    In writing and balancing equations using sulfur chemists usually use the empirical formula, S, rather than the molecular formula. Why? I'm not sure how to answer this question.
  38. Math!

    I'm sorry I don't really understand... :(
  39. Math!

    Describe how you would estimate the square root of a number that is not a perfect square without using a calculator. Can someone please explain? I need some help.
  40. U.S. History

    At least someone helped.. Thanks, Brighton. Everyone else was no bloody help.
  41. Math

    If city AN city BR 175 miles apart on a map the distance between the two towns is 2.5 inches what is the scale of the map
  42. CHEM HELP PLEASE

    would it be 1.05E^-8?
  43. CHEM HELP PLEASE

    I did a lab where I had to determine avogadro's number. I need to find the uncertainty in number of moles of stearic acid. There were 3 trials and these are the values for the # of moles of stearic acid used for each trial: 4.39E^-7 4.60E^-7 4.50E^-7 I just need help ...
  44. Math

    lease help idk this answer
  45. Calculus

    Does anyone know how to solve, ln((3x-2)/(x-1))<0
  46. Calculus

    Could someone help with this limit problem? lim x-->1 of ((sqrt(6-x))-2)/((sqrt(10-x)-3)) I tried to rationalize the denominator and numerator but it didn't work!
  47. Calculus

    Could someone help with this limit problem? lim x-->1 of ((sqrt(6-x))-2)/((sqrt(10-x)-3)) I tried to rationalize the denominator and numerator but it didn't work!
  48. math

    A picture is 42 cm by 36 cm. A scale diagram of the picture must fit in a space that is 3 m by 2 m. Write a reasonable scale for the scale diagram.
  49. calculus

    Find a cubic polynomial such as f(x)=ax^3+bx^2+cx+d that has horizontal tangents at the points (-5,4) and (4,-4)
  50. adv functions urgent

    any math teachers around?
  51. Math- simple polynomials

    For 13 it's 1 and 14 a 1/27
  52. Math

    Find the area of a triangle on a spherical surface that has a radius of 3cm and angles that measure 75degrees, 160 degrees, and 142 degrees.
  53. Math

    Find the length of the side of a right triangle side a is 40 mm the opposite is 41 mm
  54. Math

    How much glas is needed to make a fish tank that is 12 inches long, 8 inches wide, and 9 inches high? The tank is open on top.
  55. Math

    If 2.7m of ribbon costs $4.99 how much does 0.82m of ribbon cost?
  56. Chem

    Pure gold adopts a face-centered cubic crystal structure. It also has a density of 19.30g/mL. What is the edge length of gold's unit cell? What is the atomic radius of gold? I understand how to do this problem the other way: when you have the unit cell and are looking for ...
  57. math -ans check

    two points on the graph of a linear function are (-3,5) and (-1,4). Determine the equation of the function in slop-point form. ans: m=-1/2 I pick a point (-1,4) y-y1=m(x-x1) y-4=-1/2(x-(-1)) y-4=-1/2(x+1) Thank you ^^
  58. chem

    Calculate glucose levels using standard curve when you have absorbence for sample
  59. biochem

    How would I calculate blood glucose levels if using standard curve ...and I have three samples and their absorbence at 420 nm.
  60. Math check my answer

    50
  61. Math check my answer

    50 years
  62. Physical Science

    Answer anyone?
  63. Chemistry honors

    idk. lol from 4 years ago
  64. Math

    Bud and frank were playing a game together and together they scored 56 points. Buds score was 8 times higher than franks what are their scores
  65. Math

    Thanks so much!
  66. Math

    Heidi has 40 flower arrangemts. Rose arrangements are 4 times as many as tulips how many of each do I have
  67. Physics

    Your friend Josh tells you that he spends less on gas in the winter than in the summer. He also says that he has to fill up his tank less often in the winter. (a) Which of the following are possible hypotheses that can be formed from Josh’s observations? (You can choose ...
  68. math

    The answer that I got was 22 because 8+10=18 and 18+22= 40
  69. Chemistry - Electroplating - URGENT

    Sorry that should say 1115433.526 coulombs, not 8346.453.
  70. Chemistry - Electroplating - URGENT

    Ahh thank you - so then there would be 8346.453 coulombs needed instead of 2225.721. As there are two unknowns, I cannot solve this problem any further... this is for an assignment due tomorrow, what should I do?
  71. Chemistry - Electroplating - URGENT

    "To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat." This is what I have so far- 96,485 coulombs are required to plate 1 Cr; 52/6 = 8....
  72. math

    there are 30 marbles in a bag; 4 blue, 10 red,6 white, 10 yellow. You randomly draw5 marbles without replacement. Find the percent of drawing 2 red marbles and at least 2 white marbles.
  73. English

    What is wrong with Ms. Sue? Holy crap. She is NOT helpful.
  74. English

    What are some good insight questions for A Separate Peace? Some topics can include: Wroter's craft Setting POV
  75. algebra 2

    x^2 - 3x + 5 = 0. solve using quadratic formula. show solution
  76. GPA

    Currently, my GPA is a 3.5 and I'm a freshman, I'm currently taking two honors classes. Do you think I'll be able to raise it up to a 4.0 by senior year?
  77. algebra 1

    The graph models the situation because when you plug in -40 for x, you get y=14, which is a point on the graph. When you substitute 40 in for x, y=10, which is also plotted on the graph.
  78. economics

    Suppose the demand curve for a monopolist is QD = 500 − P, and the marginal revenue function is MR = 500 − 2Q. The monopolist has a constant marginal and average total cost of $50 per unit. a.Find the monopolist’s profit-maximizing output and price. ...
  79. physics

    Your town is installing a fountain in the main square. If the water is to rise 20 m above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000 Pa.
  80. physics

    If you fill a container with air at room temperature (400 K), seal the container, and then heat the container to 500 K, what will the pressure be inside the container? Assume atmospheric pressure equal to 100,000 Pa.
  81. Chemistry

    A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 827 J of heat from its surroundings and has 0.62 kJ of P−V work done on it by its surroundings.
  82. chemistry

    What volume of 0.140 M HCl is needed to neutralize 2.53g of Mg(OH)_2
  83. biology

    I need to know how egg whites would react when tested in iodine and Benedict's solution.
  84. Government

    Looking for an issue and a solution where the people and the government can help
  85. Math

    40% of what is 32?
  86. Math

    laura can paint a house in 4 hours and lucky can paint a house in 2 hours. How long would it take for Laura and Lucky to paint a house together?
  87. Organic Chemistry

    How do I make an IR Spectrum of C6H12S2 (Allyl Propyl Disulfide)
  88. Grammar

    Hi beautiful people! Quick question if you are writing a congratulatory letter should you say - I would like to take the time to congratulate you on your extraordinary commitment to XXX charity. OR - I would like to tak ethe time to congratulate you for your extraordinary ...
  89. math

    so I am wrong, thank you for explaining which it can not be. Thanks
  90. math

    Which of the following is a formula for finding the volume of a cube? A. v=e^3, where e= the edge length B. v=(lwh)^3, wherel= length,w=width andh=height C.v=6e^2, where e=the edge length D. v=b*b, where b= the area of the base I picked A since V=s^3 or e^3 for the volume of a...
  91. maths-linear equation

    (4,3),(-1,6)
  92. Calculus

    With is the integral of (9(sinx+cosx))/sin(2x)
  93. english

    what would a thesis statement be for Old Jules by Mari Sandoz
  94. English I

    Can someone please help me with this analogy? Joints:inflamed::_______atrophy. It is a crossword and there are 7 spaces. Thanks!
  95. Chem

    when 2.31 moles of sulfur hexafluoride are synthesized from te elements, how many grams of fluorine were used PLEASEEEEE HELPPPP MEEE!
  96. Math

    Given that f(x) = 2x^2 - 8x + 9, 0 ≤ x ≤ 3. (a) Find the average value of f. (b) Find c such that f(average) = f(c).
  97. Math

    Find the volume generated if the region bounded by y = sin 2x and y = cos x, π/6 ≤ x ≤ π/2 is revolved about the line y = 2. Use the method of washers.
  98. Math

    Find the volume generated. The region is bounded by y = 4x-x^2 and y = 8x-2x^2, and is rotated about x = 2. State which method (washer, disk, cylindrical shell) is used
  99. math

    Find the area of the region between the curves y = sin x and y = x^2 - x, 0 ≤ x ≤ 2.
  100. pre-algebra

    You split $1500 between two savings accounts. Account A pays annual 5% interest and Account B pays 4% annual interest. After one year,you have earned a total of $69.50 in interest. How much money did you invest in each account?
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