Most popular questions and responses by lizzy
  1. chemistry

    A chemist must dilute 55.6 ml of 1.48 M aqueous silver nitrate (AgNO3) solution until the concentration falls to 1.00M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in

    asked on August 31, 2012
  2. algebra with pizzazzi

    Do Elephants know how to gamble

    asked on December 5, 2008
  3. Statistics - Help!!!

    An independent measures research study compares three treatment conditions using a sample of n=5 in each treatment. For this study, the three samples have SS1=10, SS2=20, SS3= 15. What value would be obtained for MS within?

    asked on May 2, 2014
  4. statistics

    A research study comparing three treatments with n=5 in each treatment produces T1=5, T2=10, T3=15 with SS1=6, SS2=9, SS3=9 and (Greek letter E)X squared =94. What is SS total? What is SS between and what is SS within?

    asked on May 2, 2014
  5. physics

    Two blocks of masses m1 and m2 approach each other on a horizontal table with the same constant speed, v0, as measured by a laboratory observer. The blocks undergo a perfectly elastic collision, and it is observed that m1 stops but m2 moves opposite its

    asked on October 5, 2010
  6. Physics

    A 12.0 kg object is on a surface that is inclined 30 degrees and the coefficient of friction is 0.65. Determine the force of static friction if the block remains stationary.

    asked on May 11, 2017
  7. History

    1.Which of these was a precedent that George Washington set? A. constitutional amendment process B.formal presidential dinners C.singing of the national anthem D.use of a presidential cabinet 2.“The time for a new election of a citizen be president of

    asked on January 5, 2015
  8. Pre calc

    Let sin u=-8/17 and cos v= 12/13, with pie

    asked on November 17, 2015
  9. Elementary Statistics

    The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.39 inches and a standard deviation of 0.04 inches. If 500 pencils are selected how many would you expect to have a diameter more than 0.33 inches?

    asked on July 20, 2015
  10. Math Statistics

    In the power ball lottery game, winning the jackpot requires that you select the correct five unique numbers between 1 and 58 inclusive (don't have to match the order) and, in a separate drawing, you must also select the correct single nber between 1 and

    asked on July 7, 2015
  11. Elementary statistics

    Scores on an English test are normally distributed with a mean of 78% and a standard deviation of 4.5%. Find the value of the first quartile.

    asked on July 20, 2015
  12. Statistics

    The music industry must adjust to the growing practice o consumers downloading songs instead of buying CDs. It therefore becomes important to estimate the proportion of songs that are currently downloaded. How many randomly selected song purchases must be

    asked on July 22, 2015
  13. Calculus

    A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant.

    asked on April 29, 2013
  14. Math

    a grocery clerk nstacks three rows of can of fruit for a display, each of the top two rows has 2 fewer cans than the row beneath it, there are 30 cans altogether, how many cans are in each row?

    asked on September 21, 2010
  15. maths

    A plane takes off from Lagos at 10.30a.m. it flies to Accra in 65 mins, makes a stop of 40 mins at Accra airport. And then flies back. To Lagos in 70 mins. At What time does it land again At Lagos airport

    asked on August 3, 2016
  16. Chemistry

    HELP! I need to know if I am getting the right equation for the oxidation reaction of cyclohexene and potassium permanganate? I think it would be: C6H10+KMNO4 would become C6H10(OH) + MNO2 + K

    asked on March 1, 2011
  17. Identities

    Verify the following identity cos2x/sin2x+sinx/cosx=csc2x

    asked on November 18, 2015
  18. social studies

    Referencing Vladimir Lenin, "What is To Be Done?" (1902) Why do you think it was left to the “bourgeois intelligentsia” to transform the quest for working class rights into a philosophy?

    asked on April 9, 2013
  19. College Physics

    At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by theta(t)= 258t - 20.4t^2 - 1.47t^3 How many revolutions does the motor shaft turn through between the time when the current is reversed

    asked on October 30, 2012
  20. life Orientation

    Identify your 3 human rights violations or discriminations and explain in an lntroductory paragraph why you choose the specific human rights violation or discrimination.

    asked on April 19, 2016
  21. Further mathematics

    An exponential sequence (GP)of positive terms and a linear sequence (AP)have the same first term.the sum of their first terms is 3,the sum of their second terms is 3 and the sum of their third terms is 6. Find the sum of their fifth terms

    asked on June 30, 2013
  22. math

    Test these conjectures. Give three examples. Explain if the conjecture is correct or incorrect. 1. If a number is divisible by 4, it is always an even number._________________________________ 2. All multiples of 5 have a 5 in the ones

    asked on November 28, 2011
  23. history

    which of the following was not a new weapon or method of warfare in world war 1?

    asked on November 7, 2017
  24. physics

    For the step ladder shown in the Figure, sides and are each ft long and hinged at . is a -ft long tie rod, installed halfway up the ladder. A -kg man climbs ft along the ladder. Assuming that the floor is frictionless and neglecting the weight of the

    asked on April 10, 2008
  25. Statistics

    As the sample size gets larger, what happens to the size of the correlation that is needed for significance?

    asked on May 2, 2014
  26. chemistry

    A 150-mL sample of a .600-mol/L calcium nitrate solution is mixed with a 1.00L of .500-mol/L NaOH(aq). Calculate the mass of precipitate produced in this reacton.

    asked on May 18, 2012
  27. Phys

    The masses and coordinates of three spheres are as follows: 18 kg, x = 1.50 m, y = 1.50 m; 40 kg, x = -1.50 m, y = -1.50 m; 64 kg, x = 0.00 m, y= -0.25 m. What is the magnitude of the gravitational force on a 14 kg sphere located at the origin due to the

    asked on November 15, 2009
  28. Chemistry

    If the distance from the Earth to the moon is 3.84 x 105 km. How long would it take a radio wave with wavelength 413.8 m to travel from Earth to the moon? C=(lanbda)v & E=(h)v

    asked on November 20, 2011
  29. math

    what is the theme of the story the Christmas goblin by Charles Dickens?

    asked on May 8, 2015
  30. Honors Math

    Please help! Malia incorrectly graph the equation y=2/3x+12 with a slope of 3/2. What should malia's corrected graph look like? The answers can be: A. Vertical B. Horizontal C. Less Steep D. More Steep P.S. The / doesn't mean divide in this equation. It is

    asked on April 12, 2013
  31. Algebra

    Find two positive real numbers that differ by 1 and have a product of 1.

    asked on October 1, 2007
  32. Statistics

    A survey of 925 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 90% confidence interval for the true population of all voters in the state who favor approval.

    asked on July 22, 2015
  33. Math

    Please help! It says- A machine takes 4.0 hours to make 8 parts. At that rate, how many parts can the machine make in 31.0 hours? Anybody want to explain it to me?

    asked on December 18, 2012
  34. Calculus - free body diagram

    A water tank has the shape of an inverted right circular cone whose base radius is equal to half its height. Water is being pumped in at 2 cubic meters per second. How fast is the water rising when the water is 3 meters deep?

    asked on October 7, 2012
  35. Physical Science

    1. In which of the following units is acceleration expressed? *A. Newtons B. Foot-pounds C. Kilograms D. Meters per second squared 2. A stone falls from a ledge and takes 16 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall

    asked on September 26, 2011
  36. physics/chem

    what is the relationship between density and specific heat capacity? and why? i thought when density increase specific heat increase but it says that it is inversely proportional. thank you

    asked on December 1, 2010
  37. college, Microeconomics

    (Daddy Warbucks employs workers in his perfectly competitive factory. Mr. Smith employs workers in his monopolistic factory as the only producer of the thing you really want. Given the following information, determine how many workers each firm will

    asked on April 13, 2009
  38. physics

    0.155 kg of water at 86.0oC is poured into an insulated cup containing 0.224 kg of ice initially at 0oC. How many kg of liquid will there be when the system reaches thermal equilibrium?

    asked on April 23, 2008
  39. Math statistics

    For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same

    asked on July 7, 2015
  40. physics

    In a certain experiment, it is necessary to be able to move a small radioactive source at selected, extremely slow speeds. This is accomplished by fastening the source to one end of an aluminum rod and heating the central section of the rod in a controlled

    asked on April 23, 2008
  41. Math - Algebra

    A banker invested money in two investments. The first investment returned 4% simple interest. The second investment returned 12% simple interest. If the second investment had $260.00 more money than the first, and the total interest for both investments

    asked on October 4, 2019
  42. social studies

    In referrencing Lenin's "What is To Be Done" Lenin is here calling for unity among socialist thinkers, emphasizing that criticisms made by socialist thinkers against one another’s thoughts strengthen the enemy (bourgeois ideology”). Put in other words,

    asked on April 9, 2013
  43. chemistry

    how many iron atoms are in 0.550 mol of Fe2O3?

    asked on April 17, 2011
  44. AP Chem

    what is the hybridization of ClF3? and BrF3

    asked on November 4, 2008
  45. physics

    using well labelled diagrams,briefly describe how you would determine the density of an irregular object

    asked on February 25, 2011
  46. physics

    an object travelling at 10m/s accelerates at 4m/s2 for 8 seconds.what is the final velocity and how far does it travel during the 8 seconds

    asked on February 25, 2011
  47. history

    How many words can you make with the letters from the word Constitution?

    asked on September 17, 2008
  48. math

    In 1 through 6, find each sum. Simplify, if possible. Estimate for reasonableness. 1. 7 __2 3 + 8 __5 6 2. 4 __3 4 + 2 __2 5 3. 11 ___9 10 + 3 ___1 20 4. 7 __6 7 + 5 __2 7 5. 5 __8 9 + 3 __1 2 6. 21 ___ 11 12 + 17 __2 3 7. Number Sense Write two mixed

    asked on December 20, 2011
  49. Statistics

    A friend gives you the following Fs and decision made. Does the decision appear to be correct? Explain.Do NOT provide critical or table values as explanations. F(2, 63) = .10, not significant F(3, 85) = -1.70, not significant F(1, 120) = 64.32, not

    asked on November 3, 2016
  50. Calculus

    For the curve r = 2 sin 3(theta): Find the arc length of one petal

    asked on April 16, 2013
  51. Science

    Express the following in scientific notation 1) 547 000.0 2) 0.000000049704

    asked on August 9, 2011
  52. Math

    A donkey and a mule were carrying sacks of apples. The donkey groaned so the mule said to him: "Why are you complaining? If you gave me one sack, I would have twice as many as you; if I gave you one of my sacks, then we would have equal loads." How many

    asked on September 5, 2010
  53. Math statistics

    A mountain search and rescue team received an average of 600 calls per year. Use the poisson dustribution to find the probability that on a randomly selected day, they will receive 1 or more calls.

    asked on July 7, 2015
  54. Math

    How do I write an equation or an inequality for this: the product of a number z and 12 is 60

    asked on September 21, 2010
  55. Biology

    What are code pieces of nucleic acids? (this is for a crossword puzzle and strangely polypeptides does not fit!) the spaces are: _ _ _ _ e _ _ _ _ _ _ What are the varients of a gene? (it's not diversity like I thought it should be) the spaces are _ i _ _

    asked on March 23, 2007
  56. Chemistry

    Outline a suitable procedure for separating a mixture of sulphur and sand.

    asked on January 9, 2018
  57. maths

    how fast does a child`s heart beat in a minute?

    asked on November 19, 2012
  58. Physics

    A 2kg block is in equilibrium on an incline of 60 degrees. find fn of the incline on the block

    asked on October 19, 2011
  59. Math

    Harry went to collect eggs from four chicken coops. At the first coop he collected the eggs and put them in the the next coop,he doubled what he had.At the third coop, he collected 6 more but dropped and broke two on his way to the fourth coop.

    asked on January 23, 2011
  60. chemistry

    Chemical reaction formulas of: 1.)Fe + H2SO4 2.)FeS + H2SO4 3.)CS2 + S

    asked on February 22, 2009
  61. Maths lit.Economics.Business.Accounting.English.Afrikaans.

    Can I be an accountant with these subjects

    asked on January 21, 2016
  62. Math statistics

    Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance. Find the standard deviation for the number of left-handed students in such classes of 50 students

    asked on July 7, 2015
  63. Math HELP!! :(

    a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design

    asked on March 18, 2013
  64. Math

    i am a number between 50 and 60. one of my factors is 28. qhat number am I?

    asked on November 16, 2012
  65. Calculus: free body diagram--PLZ HELP!=)

    Grain is being poured through a chute at a rate of 8 cubic feet per minute and forms a conical pile. The radius of the bottom of the pile is always half of the heightof the pile. How fast is the circumference of the base increasing when the pile is 10 feet

    asked on October 8, 2012
  66. Chemistry

    What would the equation be for the reaction between potassium permanganate and cyclohexene. I know it's a oxidation reaction but not sure of the equation.

    asked on February 28, 2011
  67. physics

    A cannonball of mass 3.67 kg is shot from a cannon at an angle of 39.51° relative to the horizontal and with an initial speed of 56.41 m/s. As the cannonball reaches the highest point of its trajectory, what is the gain in its potential energy relative to

    asked on February 20, 2011
  68. physics

    What is a vibration? What is the relationship between period and frequency?

    asked on August 15, 2009
  69. English/Grammar

    I have an English 10 Summer Assignment about grammar and such. One of the questions is: In the following sentence, which words are verbs? Melissa was worried about her job interview. a. was, worried b. worried c. worried, about I know that it's not c., and

    asked on July 29, 2009
  70. Statistics

    The Tyco Video Game Corporation finds that it is losing income because of slugs used in its video games. The machines must be adjusted to accept coins only if they fall within set limits. In order to set hose limits, the mean weight of quarters in

    asked on July 22, 2015
  71. mlit

    a plane at a height of 5000m is travelling ata constant speed of 300m.s. A heat seeking missile is fired at the plane when it is 5000m due east of an airbase. if the missile's speed is 350m.s, will the missile hit the plane before it reaches 9000m due

    asked on January 5, 2013
  72. algebra

    what is 4x-15/2=1/2

    asked on January 29, 2012
  73. physics

    How would you draw 4 cm 45 degrees north of east plus 4 cm west?

    asked on September 24, 2011
  74. physics

    What is a capacitor used for in a current other than just collecting energy?

    asked on February 6, 2010
  75. anatomy

    What is the kcalorie value of a meal supplying 110g of carbs, 25g of protein, 20g of fat, and 5g of alcohol? Please help show work

    asked on April 21, 2009
  76. chemistry

    How do I predict the formula for the ionic compounds when I combine? Cr(+3) and chlorate Na(+1) and carbonate K(+1) andsulfate

    asked on March 11, 2008
  77. u.s. history

    what were the similarities and differences of the reform movements of the early 1800??? This site may help you find the similarities and differences. This is a general overview of reform.

    asked on May 16, 2007
  78. Math algebra

    Mia bought 7 golf balls. The total weight of the golf balls was 8 ounces. To the nearest hundredth of an ounce, how much did each golf ball weigh?

    asked on July 30, 2018
  79. life orientatio

    The physical, social and economic consequences of president Jacob Zuma's corruption and fraud

    asked on May 17, 2016
  80. 7th grade challenge math

    of 109.6 million house holds, 19,508,800 watched the television show CIS during the week of October 3, 2005. what percent of american households watched CIS this week?

    asked on January 6, 2015
  81. Math/Algebra

    I really need help! I have a paper due tomorrow and I can't find out this answer. Can you help me? The question says this: -2=n+5. Under it it says: (-2)-____=n+5-____. I know that n equals -7 but I can't find out the blanks. Please help!

    asked on November 11, 2012
  82. 8th grade math

    The amount of vitamin c in the breakfast cereal varies directly with the serving size. If 1 and 1/4 cups of cereal provides 10% of the recommended daily value of vitamin c, what percent of the recommended daily value of vitamin c is in two cups of cereal?

    asked on April 10, 2012
  83. science

    1. List 5 organs [heart,lungs,brain,kidneys, liver] you learned about and tell about what they do. 2.What 2 organs help filter the blood? 3.How do bones and muscles work together when you raise your arm? 4.Trace a drop of blood as it leaves the heart and

    asked on November 21, 2011
  84. mummies and stuff

    I already did this project and learned alot. Can you help me learn more? -Lizzy the AWESOME

    asked on October 27, 2011
  85. physics

    a box is thrown upwards with a velocity of 8m/s and takes 2seconds to reach its maximum high does it go up

    asked on February 28, 2011
  86. Precalculus

    how would you solve this equation? please help! (x/2)LOG 7 = LOG 5 - xLOG 5

    asked on November 15, 2010
  87. chemistry

    Why will the pH of pure water at 25 degree celcius be equal to 7.0 ?

    asked on April 11, 2010
  88. english

    I need help labeling complements in my sentences. I am not sure if I am doing this correctly or not. Could you please check to see if I have the following parts of speech labeled correctly? I must identify the subject, verb and complements. I must

    asked on September 6, 2009
  89. Biology A

    The process in which am amoeba engulfs its pray and takes it in is known as _________.

    asked on October 23, 2008
  90. Biology A

    In a ______________ __________________ the concentration of the solutes outside and inside the cell are equal.

    asked on October 23, 2008
  91. physics

    The system shown in the Figure is in equilibrium. The mass of block 1 is 2.2 kg and the mass of block 2 is 3.5 kg. String 1 makes an angle = 28o with the vertical and string 2 is exactly horizontal. what is the angle between the string that connects the

    asked on April 10, 2008
  92. final problem for checking

    x^3-x^2-6x greater than or equal to 0 x(x-3)(x+2)greater than or equal to 0 I figured that I have to factor first. Where do I go from here?

    asked on October 6, 2007
  93. History

    1. Explain the argument in favor of ratifying the Constitution that Alexander Hamilton makes in this excerpt.

    asked on September 11, 2018
  94. Math

    A car traveled 280 miles and you 6 gallons of gas if the same car traveled 1260 miles at the same rate how many gallons of gas would be used

    asked on April 4, 2018
  95. Maths Lit .Economics .Business.Accounting.English.Afrikaans

    Can I be a Accountant studying these subjects

    asked on January 21, 2016
  96. Honors Physical Science

    An object is moving at 25 m/s and has a kinetic energy of 12,500 J. If the acceleration due to gravity on Mercury is about 3.8 m/s2 , what would be the weight of this object on Mercury?

    asked on February 19, 2014
  97. Calculus

    On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3)+3t

    asked on April 16, 2013
  98. Math

    HELP! I have a math question the says this: In track practice, Jesse ran a mile in 7 minutes. His mile time was 2 1/2 minutes faster than Michael's time. Write and solve an equation to calculate Michael's mile time. I can't figure out what to do and it's

    asked on November 11, 2012
  99. calculus help!!!!

    Find derivative of: g(theta) = cos^2(2theta-1)

    asked on October 8, 2012
  100. physics

    Is 524,3 a floating or fixed point? Is 524,30 a floating or fixed point?

    asked on February 5, 2012


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