Questions Asked on
May 6, 2018

  1. Physics

    An athlete with mass (m) running at speed (v) grabs a light rope that hangs from a ceiling of height H and swings to a maximum height of h₁. In another room with a lower ceiling of height H/2, a second athlete with mass 2m running at the same speed (v)

    asked by Anonymous
  2. Chemistry

    What is the boiling point elevation of a solution of NaNO3 (85.0 g/mol, complete dissociation) made by dissolving 10.0 g of NaNO3 into 200 g of water (Kb = 0.512◦C/m)?

    asked by Anon
  3. Calculus

    Oil flows into a tank according to the rate F(t)=(t^2+1)/(1+t), and at the same time empties out at the rate E(t)=(ln(t+7))/(t+2), with both F(t) and E(t) measured in gallons per minute. How much oil, to the nearest gallon, is in the tank at time t = 12

    asked by Anonymous
  4. Chemistry

    Which of the following compounds has the greatest molar solubility? A) AgBr, Ksp= 5.4 x 10^13 B) Ba3(PO4)2, Ksp = 3.0 x 10^-23 C) Al(OH)3, Ksp = 1.9 x 10^-33 D) MgF2, Ksp = 7.4 x 10^-11 E) Pb(OH)2, Ksp = 1.2 x 10^-15 I know the answer for this problem is

    asked by Anon
  5. Calculus

    A car travels along a straight road for 30 seconds starting at time t = 0. Its acceleration in ft/sec2 is given by the linear graph below for the time interval [0, 30]. At t = 0, the velocity of the car is 0 and its position is 10. What is the velocity of

    asked by Anonymous
  6. chemistry

    61.8g of A combines with 80g of B.30.9g of A combines with 106.5g of C, B and C combine to form compound CB2.atomic weight of C and B are respectively 35.5 and that the law of reciprocal proportion is obeyed.

    asked by Animesh swain
  7. math

    (width:20, length:22, height:1) If the height of the tabletop was 2 inches instead of 1 inch, the surface area would increase by _____. 44 84 40 880

    asked by a dog
  8. Maths

    Make r the subject of formula t=2πr(r+h)

    asked by Victor
  9. chemistry

    The basicity of tetraoxosulphat(iv)acid is 2 explain this statement with an equation showing the reaction between the acid and potassium hydroxide

    asked by angel
  10. Math

    Drawing at least one queen when you draw a card from a standard deck 5 times​ (replacing the card each time you​ draw, so there are always 52 cards in the​ deck)

    asked by Anonymous
  11. English 4

    In the story Animal Farm how is the use of allegory as a rhetorical device different from simply laying out a non-fictional account, or an historical or statistical analysis of the period and the rise of the Communist Party? I would like an analysis of

    asked by sue
  12. Maths

    Locus of the tip of an oscillating pendulum

    asked by M
  13. Chemistry

    A little confused on this question... I think I would need to take the solute and put it over the solvent, and then use molar mass. Confused on how density plays into this problem. Sucrose is very soluble in water. At 25ºC, 211.4 grams of sucrose will

    asked by Anon
  14. Math

    A grocer bought 300 pounds of bananas at 30 cents per pound. Experience at this store indicates that, as a result of aging, 30% of the bananas are sold at 80% of cost and another 10% are discarded. At what price per pound must the top-quality bananas be

    asked by Heyhi
  15. Math

    Can lotto be win mathematically? If yes what is the formula to produce genuine Numbers

    asked by Jessica I
  16. History

    what were the four leading causes to the great depression

    asked by Tom
  17. Calculus

    A particle moves along a curve so that its position at time t is given by the position vector . What is the particle's speed at time t = 1? I think it is 12.

    asked by Anonymous
  18. math

    After leaving a platform, the velocity with which a diver enters the water is directly proportional to the square root of the height of the platform. When a diver jumps off a 10-meter platform, they will strike the water at 46 feet per second. In Acapulco,

    asked by glemus
  19. english

    In the story Animal Farm how is the use of allegory as a rhetorical device different from simply laying out a non-fictional account, or an historical or statistical analysis of the period and the rise of the Communist Party? Answer: Within an allegory

    asked by sue
  20. History

    what made the 1920's roaring

    asked by Tom
  21. Chemistry

    The basicity of tetra oxtail phage(vi) acid is 2. Explain this statement with an equation showing the reaction between the acid and potassium hydroxide.

    asked by Ofoegbu Cynthia
  22. english

    In the story Animal Farm how is the use of allegory as a rhetorical device different from simply laying out a non-fictional account, or an historical or statistical analysis of the period and the rise of the Communist Party? I am completely lost on this

    asked by sue
  23. math

    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

    asked by raj
  24. Math

    Find all vectors v in 2 dimensions having ||v ||=5 where the i -component of v is 3i vectors:

    asked by George
  25. Math

    Find a unit vector u in the direction opposite of ⟨−3,−9,−9⟩.

    asked by George
  26. Math

    For the sequence 0,3,8,15,24; Write the general term (an equation) for the nth term of this sequence I got tn=n^2-1. Is this correct??

    asked by Anonymous
  27. Math

    A property management company furnishes skilled help to maintain apartment complexes. If employees are paid $16 per hour and the company wishes to maintain a 30% markup based on the employees’ hourly pay, what hourly rate should it bill property owners?

    asked by Heyhi
  28. Math

    Assume you own a sporting goods business. Find the selling price for a tent costing $387, based on a 25% markup on selling price. $387/75% = $516 can anyone tell me if this is correct?

    asked by Heyhi
  29. Maths

    The angle of elevation of the top of a tower fron a point 42m away from its base on level ground is 36degree.find the height of the tower.NOTE:no calculation only scale drawing

    asked by Anonymous
  30. Math

    a)A man swims northeast at 5mph. Give a vector representing his velocity b)He now swims a river the same velocity relative to still water; the river's current flows north at 1.2 mph. What is the velocity relative to the riverbed?

    asked by George
  31. Physics

    Getting my head twisted around by the wording of these two questions, any help would be appreciated. My answers/ideas are below each question. 1) Briefly explain whether there would there be more or fewer configurations available for the gas if the

    asked by Anon
  32. MAth

    solve equation by factoring 3m^2-8m=35 I need to show full work as well please help

    asked by MIke
  33. History

    What are 3 main events that led to the stock market crashing in 1929?

    asked by Cam
  34. Math

    Danielle will use the instructions in the box below to make a cleaning solution "Add 13 cups of water to every 2 cups of concentrated cleaner" Which of the following proportions can be used to find W, the number of cups of water Danielle will add to 5 cups

    asked by Lyla
  35. Math

    Yep, another math question! The slope of a line passing through H ( -2, 5) is -3/4, which ordered pair represents a point on the line? A: (6, -1) B:(2, 8) C: (-5, 1) D:(1, 1) No graph was with the question btw. I tried making a coordinate plane myself and

    asked by Lyla
  36. Math

    M varies directly as the square of N. If N increases by 10%, find the percentage change in M

    asked by Francis
  37. Maths

    If k>0 and the product of the roots of equation x to power 2-3kx+2e power 2logk-1=0 is 7 then sum of roots is?

    asked by Swathi
  38. Math

    t) Let a , b , c and y be the three dimensional vectors a =4j +2k ,b =−3i +4j +4k ,c =3i −j ,y =8i −7j Perform the following operations on these vectors: (a) c⋅a +a⋅y = (b) (a ⋅b )a = (c) ((c⋅c)a )⋅a =

    asked by Carl
  39. Algebra

    Solve Using Quadratic Equation 5r^2 = 2r + 1

    asked by Christopher
  40. Calculus

    If f is a vector-valued function defined by then what is f '' (pi/4)? I think it is .

    asked by Anonymous
  41. Math

    So i have to find the first 5 terms of each sequence; 2^x-1. Would I start at 0? I mean is 0 a natural number

    asked by DAMIANN
  42. Math

    Solve the equation and show the check of the potential answer(s). If any answers are excluded values, state this on your answer sheet. a2 + 4a - 5/a2 + 2a - a + 3/a + 2 =1/a2 + 2a Can someone please show me how to do this problem with checks? I have

    asked by Neil
  43. Math

    A car traveling from town A to town B at an average speed of 80 km/h took 54 minutes. Another car took 40 minutes to travel the same distance. What was the difference in their speed in km/h?

    asked by k
  44. History

    I am doing a History project and i need to know ranked 1 to 8, 8 most influential people of the 20's and 30's

    asked by Tom
  45. Math

    Can someone help me with a formula for this? A container ship left the Azores and traveled north. An aircraft carrier left two hours later traveling 5 km/h faster in an effort to catch up to it. After eight hours the aircraft carrier finally caught up.

    asked by Peter G.
  46. Physics

    So I have worked out the 'allowed' configurations for four particles which can occupy 5 different energy levels (1, 3, 5, 7, 9) and now I need to work out the average number of particles in a particular energy level (i.e 3). 1) 9,5,1,1 2) 9,3,3,1 3)

    asked by Anon
  47. History

    I need to make a timeline for the great depression. I need four lead up events to the stock market crash, then after that happens, i need four response events on how they responded to everything falling apart.

    asked by Cam
  48. Math

    Sports Haven keeps an inventory of FITBIT Wearable Technology. Assume an inventory of 35 FitBits at the beginning of the year at a cost of $44.32 each. Additional FitBits were purchased as follows: 15 at $45.50 each on March 22, 30 at $45.80 each on May 2,

    asked by Heyhi
  49. algebra

    Solve the following inequality. Yuur answer show be enter with the variable on the the left side of the inequality. ( i.e. x< 1000) In part I you will enter your boundry point. In part II you will enter L for less than and G for greater than. 5x + 4< 39

    asked by Anonymous
  50. Physics

    Derive the coefficient of surface tension of mercury

    asked by Evans
  51. Physics

    Derive the coefficient of surface tension for water

    asked by Evans
  52. Math

    Compute the angle between the vectors i −j +k and −i −j −k . angle=

    asked by Carl
  53. Math

    A printer takes 50 minutes to print a total of 1200 identical black-and-white posters and 500 identical coloured posters. The same printer takes 1 hour to print 2400 such black-and-white posters. How many such coloured posters can the same printer print in

    asked by chimingbell
  54. Math

    The force on an object is F =−21j . For the vector v =4i −j , find: a) The component of F parallel to v : (b) The component of F perpendicular to v : The work, W, done by force F through displacement v :

    asked by Tim
  55. Physics

    Please who can help me out. Derive the coefficient of surface tension for water

    asked by Evans
  56. Physics

    Someone please.... Derive the coefficient of surface tension for mercury

    asked by Evans
  57. algebra

    Simplify the expression: 4 times Start Root 18 End Root plus 5 times Start Root 32 End Root

    asked by Anonymous
  58. History

    who are the most influential people of the 1920's or 1930's Canadians

    asked by Tom
  59. Math

    Javier has a worm business in which he buys night crawlers from younger kids for 4 cents each and sells them for $1.25 per dozen. What is the percent markup on cost, to the nearest tenth of a percent? a. 160.4% b. 61.6% c. 96.8% d. 3.025%

    asked by Heyhi
  60. Math

    Which of the following vectors are parallel? u=2i+4j-2k, v=i-j+3k w=-i-2j+k, p=i+j+k q=4i-4j+12k, r=i-j+k

    asked by Tim
  61. math

    In a restaurant, a service charge of 10% is added to the price of a meal. What is the service charge on a meal costing £28.50?

    asked by lauran
  62. Math

    jameel receive a salary of 3600 he saved 1\4 of it gave his mother 1\5 of it and used up1\10 of it on entertainment calculate how much money jameel still has left

    asked by marva