amir

Newest questions posted by amir
  1. Physics

    A hockey puck is given an initial speed of 6.7 m/s. If the coefficient of kinetic friction between the puck and the ice is 0.08, how far (in m) does the puck slide before coming to rest?
  2. Math

    Hannah and Francine have $120. Hannah and peter have $230. Peter has 6 times as much money as Francine. How much does Hannah have?
  3. jimma university facaliy of law

    compare & contrast the three major legal system of the world the babylonyan,greek&roman legal system ?
  4. Math

    The area of the base of a cubiod is 44cm.Find the height,If the volume is 378.4 cm
  5. Stat

    Blossom’s Flowers purchases roses for sale for Valentine’s Day. The roses are purchased for $10 a dozen and are sold for $20 a dozen. Any roses not sold on Valentine’s Day can be sold for $5 per dozen. The owner will purchase 1 of 3 amounts of roses
  6. physics

    A 83 kg person escapes from a burning building by jumping from a window 21 m above a catching net. The acceleration of gravity is 9.81 m/s 2 . Assuming that air resistance is simply a constant 92 N force on the person during the fall, determine the
  7. mATH

    wat is 80÷3=?
  8. math grade 11

    in a reflection the image of the line y-2x=3 is the line 2y-x=9.find the axis of reflection.
  9. Chemistry

    An ice cube at 0.00 degree celsius with a mass of 23.5 g is placed into 550.0 g of water, initially at 28.0 degree celsius, in an insulated container. Assuming that no heat is lost to the surroundings, what is the temperature of the entire water sample
  10. Chemistry

    balance this equation NaOH + H2SO4 = NaSO4 + H2O
  11. calculus

    Find the intervals on which the f(x)= cos^2x is concave up and concave down.
  12. Math

    2y^2 -8y -3 = 0 please solve
  13. Math

    2y^2 -8y -3 = 0 please solve
  14. Math

    2y^2 -8y -3 = 0 please solve
  15. Math

    2y^2 -8y -3 = 0 please solve
  16. Math

    2y^2 -8y -3 = 0 please solve
  17. Math

    prove that sinA/(1+cosA) + (1+cosA)/(sinA) = 2cosecA
  18. MATH

    THE LINE Y=X+4 INTERSECTS THE CURVE 2X^2 + 3XY - Y^2 + 1 = 0
  19. MATH

    THE LINE Y=X+4 INTERSECTS THE CURVE 2X^2 + 3XY - Y^2 + 1 = 0
  20. matj

    prove that (cotx+tanx)(cotx-tanx) = 1/(sin^2 x) - 1/(cos^x)
  21. math

    3+siny = 3cos^2 y for 0
  22. Math

    solve 4 sin x = cos x for 0
  23. Math

    g(x) = 3x+5 / x-1 find the inverse function
  24. Chemistry

    You need to prepare 2 M solutions, with 10 g of solute. What volume of solution will you prepare for ammonium nitrate, NH4NO3?
  25. IGCSE Chemistry

    Hydrocarbons A and B both contain 85.7 % carbon. Their molar masses are 42 and 84 respectively. a) Which elements does a hydrocarbon contain? b) Calculate the empirical formula of A and of B. c) Calculate the molecular formula of A and B. I solved a) and
  26. Math

    A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, then in what ratio should they divide it so that the man still receives the same amount?
  27. physics

    at time t=0 the driver starts to brae determine how long the bus takes to stop
  28. Chemistry

    Please explain the process of diffusion.
  29. Trig

    8 csc theta - 2=10 + 2 csc theta I can't do it. :S
  30. College Admission

    I am currently outside USA. Now in Asia we follow the Cambridge igcse curriculum. If I move to USA can I still get into an Ivy League college?
  31. SAT

    This is definitely not homework. I just want to know what would be the best book for preparing my self for the SAT.
  32. Physics

    Say what energy changes are taking place: a)clockwork toy b)boy kicking soccer ball c)boiling kettle on a gas ring d)person walking upstairs What are the wasted energy in a) b) c) and d)?
  33. Physics

    Metal expands more than glass when both are heated. How can this fact be used to help open a metal screw top on a glass bottle which appears to be stuck?
  34. Algebra

    x^2+y^2=86 and xy=(-16), Find the value of (x-y)^2 Please help i am a bit tense today so i can't figure it out.
  35. Math

    Please help me solve this equation -5t+2=-2t*2
  36. Chemistry

    Sulfur Trioxide can be dissolved to form sulphuric acid. But it is avoided since the reaction is violent. Explain why?
  37. Physics

    What is the difference between magnetic field of a bar magnet anf the magnetic field around a current-carrying coil? Please answer with a good explanation.
  38. Physics

    If you cut a magnet in half does each half become a magnet. Give a clear explanation to your answer.
  39. Physics

    My question is how does metal corrosion affect a reed switch? This question is from my textbook. We are following cambridge igcse science.
  40. Math

    Solve the inequality: Absolute Value of X+5 is greater than or equal to 1. I'd appreciate someone telling me how to solve it and get the answer. Thank you
  41. Math

    Solve the inequality: absolute value of x+is greater than or = to1. What form do you put it in? I missed class, and would appreciate someone telling me how to do this problem. Thanks!
  42. Science

    What roles do these systems play in supporting cellular respiration? -digestive system -repiritory system -circulatory system
  43. Distance Problems

    A bus and a car leave the same place and travel in opposite directions. If the bus is traveling at 50 mph and the car is traveling at 55 mph, in how many hpurs will they be 210 miles apart. Again please help me with the boxes, Im in advanced math and I'm
  44. Distance Problems

    A bus and a car leave the same place and travel in opposite directions. If the bus is traveling at 50 mph and the car is traveling at 55 mph, in how many hpurs will they be 210 miles apart. Again please help me with the boxes, Im in advanced math and I'm
  45. Distance Problems

    John took a drive to town at an average rate of 40mph. In te evening he drove back at 30mph. If he spent a total of 7 hours traveling, what is the distance traveled by John? Please set up the boxes and help solve.
  46. Distance Problems

    James and tom are in 2 cities which are 186 miles apart and travel towards eachother. James' average rate was 32 mph, and Tom's average ratewas 36mph. If James started at 9:00am and Tom's startes at 9:30 what time did they meet? I need help settign up the
  47. Math

    At 11:00am a car (1) leaves city "A" at a constant rate of 60 mi/hr toward city "B". AT the same time a second car (2) leaves city "A" at the constant rate of 50 mi/hr. The distance between cities A and B is 220miles and a highway used by the two cars
  48. Math

    2 cyclists start at the same tiem from opposite ends of a course that is 45 miles long. One cyclist is riding at 14 mph and the second is riding at 16mph. How long after they begin will they meet?
  49. 8th grade science

    why is diffusion important to living things? (organisms) u get full credit no worries! =]
  50. 8th grade science

    I need some websites for the answers to these questions: What is diffusion? What causes diffusion? Why is diffusion important to living organisms? Thanks, AMir
  51. Please read my short story deeper Ever deeper

    Pleeeeeeeeeeeeaaaaaaaasssssssse read my short story, it's down here, and I need to have it read by ppl. - - - - - V
  52. My short Story called deeper ever deeper

    Please read this and tell me what you think. It's due tomarrow. Any constructive critisism is appreciated greatly. “Wow, she’s hot!” Jake Petri thought as he his gaze left his paper and trailed off to Emily Runner from across the classroom. If only
  53. Math age problem

    louise is 4 years younger than jennifer now. In 10 years, louise will be twice the age that jennifer is now. Please help me set this up. It's an age problem.
  54. math

    louise is 4 years younger than jennifer now. In 10 years, louise will be twice the age that jennifer is now. Please help me set this up.
  55. Spanish

    how do you say: That is the coolest thing I have ever heard in my life! in spanish. Tysm
  56. math

    The numerator of a fractionis 5 less than twice the denominator. If the numerator is decreased by 1 and the denominator is increased by 3, the value of the new fraction is 5/4. Find the original fraction.
  57. math

    find two consecutive even integers such that 5 more than the first is divided by 2 less than the second, the result is 13/12.
  58. science

    is the density of a metal (like aluminum) the same no matter what the size of aluminum?
  59. chemistry

    Hi. I'm not sure if my strategy for this problem is correct: How many grams of CaCO3 will dissolve in 3.0x10^-2 mL of 0.050M Ca(NO3)2? I think I'm supposed to convert molarity of Ca(NO3)2 into moles, but then i don't know how to get from mols of that to