Questions Asked on
April 8, 2012

  1. Chemistry(Please check answer)

    The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ? My answer is [Hg2^2+^][2I^-^]^2^ Would you agree?

    asked by Hannah
  2. geometry

    The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The smaaler trapezoid is 24m, and the larger trapezoid is 57m. Possible answers: 576m^2--3,249m^2--3,181m^2--14m^2

    asked by kevin
  3. geometry

    a large triangle is 15ft and the small triangle is 9ft. the triangles sre similar what is the ratio (larger to smaller) of the perimeters? possible answers: 25/9--1/6--5/3--9/25 the triangles are similar what is the ratio ( larger to smaller) of the area

    asked by kevin
  4. physics

    An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What

    asked by kelly
  5. goemetry

    The pentagons below are similar. The area of the smaller pentagon is 30m^2. What is the area of the larger pentagon in m^2? Small pentagon is 4m and the larger one is 10m

    asked by kevin
  6. discrete math

    Find how many positive integers with exactly four decimal digits, that is, positive integers between 1000 and 9999 inclusive, have the following properties: (a) are divisible by 5 and by 7. (b) have distinct digits. (c) are not divisible by either 5 or 7.

    asked by carlton
  7. Physics

    During each heartbeat, approximately 71 cm3 of blood is pushed from the heart at an average pressure of 105 mm-Hg. Calculate the power output of the heart, in watts, assuming 68 beats per minute.

    asked by Constance
  8. College Physics 2056

    An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to the wall?

    asked by Tony
  9. PLEASE HELP CHEM!

    2 HgCl2 (aq) + SnCl2 (aq) --> SnCl4 (aq) + Hg2Cl2 (s) Hg2Cl2 (aq) + SnCl2 (aq) --> 2Hg (s) + SnCl4 (aq) For each reaction, write the two half-reactions that make it up and calculate the overall reaction potential by adding the two half-reactions. Each

    asked by Betsy
  10. geometry

    Find the area of the rhombus. Leave your answer in simpliest radical form. Looks like kite the left sied top corner is 60 degrees and the bottom right corner is 6. Possible answers are: 12sqrt3--36sqrt6--72--72sqrt3 Could someone please help.

    asked by kevin
  11. Math11

    Jamal has invested 5000.00 in an account that earns 2.50% interest per annum for a term of 10 years. a) how much interest will he earn? B)How much will his investment be worth at the end of the term?

    asked by Donald Trump
  12. College Physics

    A 40 kg child is standing on the edge of a merry-go-round in a playground. Before they were deemed too dangerous, these were quite common. They were just huge rotating platforms you could sit on while someone spun you around in uniform circular motion

    asked by Taylor
  13. math

    If a spring stretches 0.9 m when a 3-kg weight is attached to it, how much will it stretch when a 4-kg weight is attached to it?

    asked by gwen
  14. Applied Calculus

    A hardware store owner chooses to enclose an 800 square foot rectangular area in front of her store so that one of the sides of the store will be used as one of the four sides of the fence. If the two sides that come out from the store front cost $3 per

    asked by Trisha
  15. Chemistry

    Why does equilibrium shift to the left when AgNO3 is added to the equation Co(H20)6 (aq) + 4Cl- (aq) CoCl4 (aq) + 6H2o(l)?

    asked by Nancy
  16. Calculus

    Explain why the plane with Cartesian equation 2x+5z-3=0 never intersects the y-axis. Answer:Because there is no y-value in the equation?

    asked by Jenny
  17. algebra

    The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.6x^2+12+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold

    asked by Terry
  18. physics

    You are trying to raise a bicycle wheel of mass m and radius R up over a curb of height h. To do this you apply a horizontal force F. What is the smallest magnitude of the force F that will succeed in raising the wheel onto the curb when the force is

    asked by Emily
  19. Science

    Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes. How could she figure out if their volume is the same? A)Weigh each one on a scale to see which is heaviest. B)Fill each one with

    asked by Sara HELP ME PLEASE
  20. Physics

    If you can see the face of a friend who is underwater, can she also see you? Please explain. Thanks :)

    asked by Celina
  21. Chemistry

    Given the reaction NH3(g) + O2(g)--> NO(g) + energy, in what direction will the reaction shift if you: a)remove O2 (g) b)increase the pressure by decreasing the volume c)decrease the temperature d)add a catalyst

    asked by Arianna
  22. Pre-calculus

    Find the value for c for which the system is consistent and dependent. 3x + y = 5 4.5y = c + 9x Find the minimum value of f(x, y) = y – x + 1 for the polygonal convex set determined by this system of inequalities. x > 0 y > 0 2x + y< 4

    asked by brandi
  23. Chemistry

    How many stereoisomers are there for 1,2-dichlorocyclopentane? The answer options are 1,2,3 & 4. I think it is 4 because there is one cis & one trans isomer,so when using the 2^n formula,the final answer is 2^2 =4.Is my approach correct? Need ur help

    asked by Meenaakshi
  24. chemistry

    Given the reaction 1/2 N2( g) + 3/2 H2 (g) ___> NH3 (g) +11.0kcal.Is this reaction exothermic or endothermic?

    asked by faisal
  25. Chemistry(Please check)

    Which of the following mixtures will be a buffer when dissolved in 1 liter of water? 0.10 mol Ba(OH)2 and 0.20 mol HCl 0.30 mol KCl and 0.30 mol HCl 0.40 mol NH3 and 0.40 mol HCl 0.20 mol HNO2 and 0.10 mol NaOH 0.20 mol HBr and 0.10 mol KOH My answer is

    asked by Hannah
  26. History

    Create a Metaphor and simile about the panama canal, the perspective of the untied states from panama canal, and from the perspective of panama canal from the untied states. and give three reason for each.

    asked by Matt
  27. Chemistry

    A quantity of 100 mL of .5M of HCl (aq) is mixed with 100 mL of .5M of NaOH (aq) in a constant pressure calorimeter. The initial temperature of the solutions is 22.30 C and the final temperature of the mixed solution is 25.00 C. What is "q" for solution

    asked by Dante
  28. Statistics - Probability

    A mutual fund company has six funds that invest in the U.S. market and four funds that invest in foreign markets. An investor wishes to create a mutual fund portfolio composed of two U.S. funds and two foreign funds. Unknown to this investor, one of the

    asked by Esther
  29. Chemistry PLZ HELP!!!!!

    write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur

    asked by Maci
  30. MATHEMATICS

    A piece of notebook paper is about 0.0032 inch thick. If you begin with a stack consisting of a single sheet and double the stack 25 times, how tall will the stack be in inches? How tall will it be in feet? (Hint: Write and solve an exponential equation to

    asked by DAN
  31. Chemistry

    N2 (g) + H2 (g) NH3 (g) + energy Name the direction of equilibrium shift - The pressure of the system is increased. - H2 is added to the system. - The temperature of the system is decreased.

    asked by Anonymous
  32. Chemistry

    At 55C, the K for the reaction: 2NO2(g) N2O4 is 1.15 a) write the equilibrium expression b) calculate the concentration of N2O4(g) present in equilibrium with 0.50 mole of NO2 Please help and explain

    asked by Anonymous
  33. Chemistry ,Reactions at Electrodes during Electrol

    Reactions at Electrodes during Electrolysis Which half-reaction will take place at the cathode during the electrolysis of molten MgCl2? 2Cl- > Cl2 + 2e- Cl2 + 2e- > 2Cl- Mg2+ + 2e- > Mg Mg > Mg2+ + 2e- Which half-reaction will take place at the cathode

    asked by Mahtab
  34. Chemistry

    4. Use the information above to write net ionic equations for the two reactions that you have observed. 5. For each reaction, write the two half-reactions that make it up and calculate the overall reaction potential by adding the two half-reactions. Each

    asked by Please Check!
  35. Math

    Perform the indicated operations and simplify: i^-31

    asked by Adrian
  36. Trig

    Find the supplement of pi/6

    asked by YOLO
  37. anthroplogy 101

    Caste systems are most common in societies

    asked by carmen
  38. college chem

    A sample of 8.00 L of NH3 (ammonia) gas at 22 degrees and 735 torr is bubbled into a 0.500 L solution of 0.400 M HCl (hydrochloric acid). The Kb value for HCl is 1.8x10^-5. Assuming all the NH3 dissolves and that the volume of the solution remains at 0.500

    asked by Kimmytuma
  39. Calculus

    For what values of x does 4x^6-8x^3+18 have a relative minimum

    asked by Dandylove
  40. Calculus

    The position of a particle on the x-axis at time t, t>0' is ln t. Find the average velocity of the particle for 1

    asked by Dandylove
  41. boiling point

    You are in a mountain range with atmospheric air pressure of 520 mmHg, and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure?

    asked by Anonymous
  42. MATH

    I have to make 4 square dog pens fit into a 169 square meter yard. the yard is square whole numbers If you square the yard it isn't whole numbers. 84.5 One of the pens is 24 square meters Please help me begin.

    asked by SUZANNE
  43. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked by Maci
  44. Chemistry

    Steam is compressed reversibly to liquid water at the boiling point 100C. The heat of vaporisation of water at 100C and 1.01325 bar is 2258Jg^-1. Calculate for one mole of water in term of work done(w),q,H and U for the process

    asked by Charles
  45. Physics (12th Grade)

    The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity?

    asked by Tools(plz help its really urgent)
  46. Chemistry PLZ HELP!!!!!

    distinguish between aorphous and crystalline soilds and give an example of each

    asked by Maci
  47. Chemistry PLEASE HELP!!

    Questions: 1. In each test tube, a precipitate formed upon DROPWISE addition of the second reagent (steps 5 and 6). What are these precipitates? (a) First test tube with HgCl©ü : (b) Second test tube with SnCl©ü : 2. In each test tube, which reagent

    asked by Maranda
  48. Calculus

    Verify please and thank you~ Does the line (x-7)/3=(y+8)/6=(z+4)/5 and the point P(10,-2,1) determine a plane? Answer: Yes, it is a plane because when I substituted the point P(10,-2,1) into the equation, I got the coordinates (1,1,1) If the coordinate

    asked by Jenny
  49. Math

    2x+4y= 6

    asked by Quesha
  50. Life orientation

    Substance abuse.5 ways in which the human or environmental problem impact on the community only in south africa

    asked by Mpho
  51. math

    the bag contains 20 red marbles and30 white marbles and 40 blue ones what is the ratioof red to blue marbles what is the ratio of white to red if one marble is drawn from the bag what is the probability that the marble will not be white??? need ansewr

    asked by kristen
  52. chemistry

    How many mL of 3% aqueous hydrogen peroxide solution can you make out of 100 mL of 35% aqueous hydrogen peroxide?

    asked by Amanda
  53. chemistry

    How many mL of 3% aqueous hydrogen peroxide solution can you make out of 100 mL of 35% aqueous hydrogen peroxide?

    asked by Amanda
  54. math

    with the babys in his arm mr greer weighed 180 pounds without the baby he weighed 165 1/2 pounds how much did the baby weigh plzzz be ast with ansewer

    asked by kristen
  55. Chemistry

    How many mL of .175M H3PO4 are needed to neutralize 15.00mL of .33M NaOH?

    asked by Sam
  56. Math

    Damien sets up a bucket to catch rain drops the bucket can hold 1 gallon. If each raindrop is mae of about 1/90 fluid ounce of water,how many raindrops will the bucket be able to hold?

    asked by Shay
  57. discrete math

    Suppose that a department contains 10 men and 17 women. How many ways are there to form a committee with 6 members if it must have strictly more women than men?

    asked by carlton
  58. math

    jimm read 42 pages of a book each day for 5 days on the next 3days he read 44pages 35 pages and 35 pages what was the avrage number of pages he read on the last 3days what was the avrage he read for all 8 days

    asked by kristen
  59. Math

    Sneakers were on sale for 25%off their original price. Lola bought a pair of sneakers that has an original price of $43.00. She also paid a sales tx of 7.25% on the sale price of the sneakers.How much did Lola pay for the pair of sneakers? Round to the

    asked by Shaquanieta
  60. AAT

    ã3tanx=3tanxcscx-ã3tanx

    asked by JB
  61. physics

    A man (mass = 78.6 kg) is jogging through the woods and runs straight into a large oak tree at 6.1 m/s. Rebound speed is measured at 5.2 m/s in the opposite direction. If the time of contact with the tree is 0.041s, what is the magnitude of the force that

    asked by Miriam
  62. Chemistry PLZ HELP!!!!!

    what types of close packed unit cells do most metals assume?

    asked by Maci
  63. Chemistry

    Write balanced net ionic equAtions. D) zinc chloride and excess ammonia E) cupric phosphate and lots of ammonia A) ammonia and excess zinc sulfate

    asked by ALISON
  64. physics

    A bullet of mass m = 5.89 g is fired into a block of mass M = 3.09 kg that is initially at rest on the edge of a smooth table. (The table top is 0.83 m above the floor.) The bullet ends up stuck in the block, and together they fly off the table and fall to

    asked by Marc
  65. Chemistry

    What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K?

    asked by B
  66. science

    A ball of mass m is attached by two strings to a vertical rod. as shown above. The entire system rotates at constant angular velocity about the axis of the rod. a)Assuming is large enough to keep both strings taut, find the force each string exerts on the

    asked by tammy
  67. Math: Derivatives

    Use the shortcut rules to mentally calculate the derivative of the given function f(x) = −x + (3/x) + 1 After deriving it, I got -1+(0/1)+0= -1 But this answer is wrong, and I don't know why. Thank You

    asked by Nick
  68. Applied Calculus

    If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height

    asked by Trisha
  69. Chemistry

    What is the volume occupied by 12.3 g of argon gas at a pressure of 1.17 atm and a temperature of 455K? Would formula be V=T/P? 388.89 L?

    asked by B
  70. algebra

    Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0. Solution:2

    asked by Terry
  71. life orientation

    critically discuss 5 wayz in which the human or environmental problem impect on the community

    asked by nosiphosethu
  72. History

    civil war ---> triumph of american democracy over european aristocracy. I'm supposed to write a paragraph about this, but I don't understand it.

    asked by Lala
  73. social studies

    what is the role of US government

    asked by Yajat
  74. geometry

    if a room measures 19 ft by 25 ft and covering thisroom with tile that costs .92 cents each how much would you spend

    asked by chelsea
  75. Chemistry(Please check)

    . The insoluble salts AV, B2W, C2X3, DY2, and EZ3, which were formed from the metal ions A+, B+, C3+, D2+, and E3+ and the nonmetal ions V1– , W2–, X2–, Y1–, and Z1–, all have the same Ksp value. The salt with the highest molar solubility is AV

    asked by Hannah
  76. Geometry

    (1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false

    asked by becca
  77. Chemistry PLZ HELP!!!!!

    how are intermolecular forces different from chemical bonds?

    asked by Maci
  78. math plz help

    how would you determine the number of diagonals in a regular 41-gon ?

    asked by jack
  79. Chemistry

    What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K? Unable to understand formula suggested Dr. Bob. Please explain further.

    asked by B
  80. calculus

    let R be the region of the first quadrant bounded by the x-axis and the curve y=2x-x^2. Find the volume produced when R is revolved around the X-axis

    asked by Jens
  81. Algebra 1

    An empty box weighs 6 ounces.Jenna puts 12 calculators in the box.The total weight of the box and calculators is 96 ounces.Which equation models the weight,w,in ounces of each calculator?

    asked by Wileesha
  82. math

    if the odds agaisnt you winning are 1 to 7,what would the probability that you would win?

    asked by anthony
  83. Statistics

    You are responsible for quickly fixing your company¡¯s computer system when it crashes. You know that there are three possible sources of errors in the system: the disk drive, the memory and the operating system. From an analysis of historical data, you

    asked by Esther
  84. English

    Need to know how to correct this run on sentences. In some parts of Canada's Northwest Territory the only way to transport supplies is over frozen lakes being a ice road tucker is one of the most dangerous jobs in the worl.d.

    asked by Cindy
  85. Math

    2 round fountains which are silimiar but one measures 9'11"across and the other one measures 17'10".what would be the scale factor for the larger one?

    asked by jazz hands
  86. Chemistry

    What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K? So...Dr. Bob... PV=nRT 1.17V=(12.3)(.08206)(455K) V=459.25/1.17 V=392.5L ???

    asked by B
  87. Chemistry PLZ HELP!!!!!

    write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur

    asked by Maci
  88. tidewater tech

    A British pharmaceutical company spent years and considerable funds on the development for a treatment for HIV patients. Now, with the protection afforded by patent rights, the company has the potential to reap enourmous gains. The government, in response,

    asked by Anonymous
  89. Statistics

    Alonzo applied for a job to be an administrative assistant.He had to take a typing test. His words per minute were translated into a z-score. If the z-score was 0, should he be hired? There were 47 applicants, and typing speed is very important.

    asked by Jen
  90. math

    What is 42q squared minus 19qt minus 35t squared?

    asked by Brandi
  91. Math

    If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height

    asked by Trisha
  92. Calculus

    Determine two sets of parametric equations for the line passing through the points P(1,7,1) and Q(3,4,4) ---------------------------------------- I got one of them but I don't know how to get a second parametric equation. first one: x=1-2s, y=7+3s, z=1-3s

    asked by Jenny
  93. grammar

    which statement is suitable for a peruasive essy? As a taxpayer, I get very upset when the government raises interest rates. The state should increase driver's registration fees to pay for the new highway overpass. Lighting has been known to strike in the

    asked by kevin
  94. chemistry

    if heat of dissolution dissolution of NaCl=1700K.J/mole find heat of dissolution 11.7gm of NaCl in water

    asked by habiba
  95. Chemistry(Please check)

    . Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would

    asked by Hannah
  96. Chemistry

    100g of a saturated solution of sodium nitrate at 43°C is cooled quickly with stirring to 10°C. How many grams of the solute will crystallize?

    asked by Veronica
  97. Economics: Am I right?

    I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct. 1.A decrease in aggregate demand causes a decrease in ______ only in the short run, but causes a decrease in ______ in both the

    asked by Bobbie
  98. probability question

    if the odds agaisnt you winning are 1 to 7,what would the probability that you would win?

    asked by jazz hands
  99. Geometry

    how would you determine the number of diagonals in a regular 41-gon ?

    asked by Chelsea
  100. geometry

    (1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false

    asked by mica
  101. chemistry

    If the.mass of 100 cm of magnesium is 1.02g, what is the mass of the magnesium if its 1.5 cm?????????????? Help!!!!!

    asked by jerrica
  102. math

    Do 3x^2-7x+2=0 verify that the sum of the solution is -b/a and verify that the product of the solution is c/a

    asked by Emma
  103. Geometry help check

    (1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false

    asked by chelsea
  104. English

    Good Easter to you and your family, too, Writeacher. I urgently need you to check this rephrase of the modern translation of the fight between Beowulf and Grendel by Seamus Heaney. I need to be more precise in the description of the fight. Nor did the

    asked by Matthew
  105. chemistry

    AgNO3+NaCL=NaNo3+AgCl heat change=-36 heat of percipitation of 2 moles of AgCl???

    asked by habiba
  106. f/celsius problem

    5(30*-32)/9= im confused 5 times 2=10/9 is this correct

    asked by jazz hands
  107. chemistry

    if heat of precipitation of AgCl=-36k.j/mole find heat of precipitation of 287 gm of AgCl knowing that (Ag=108 . CL35.5)

    asked by habiba
  108. math

    please answer this true or false. if all sides of the quadilateral are conguent,the quadlateral is a RHOMBUS ? is it false

    asked by jazz hands
  109. Calculus

    Consider line segments which are tangent to a point on the right half (x>0) of the curve y = x^2+7 and connect the tangent point to the x-axis. If the tangent point is close to the y-axis, the line segment is long. If the tangent point is far from the

    asked by Lynnn
  110. physics

    If the strip is 29 mm long, how far is the maximum deviation of the strip from the straight orientation? (The deviation is measured from the straight orientation from the interface of the two strips.)Radius of curvature is 53.7 m

    asked by Anonymous
  111. math

    18 roses and 6 tulips coast $66. What is the unit price for each kind of flower?

    asked by monica
  112. ALGEBRA

    Find the functional values requested in the problem. h(x)=5 x-1

    asked by Daniel
  113. science

    bob and sue are initially standing still on frictionless ice. bob weighs 500n . they push against each other and sue acquires an acceleration of 5m/s while bob acquires acceleration of 3m/s. what is sue mass

    asked by dam
  114. Math

    A contractor gives a quote of $21,060 to build an 18 foot by 24 foot barn. What is the building cost per square foot?

    asked by Casey
  115. Algebra 1a

    8 Increased by b The translation is

    asked by Dede
  116. English

    Can you please check these sentences on history, please? Thank you, Writeacher. 1) In the 8th and the 9th centuries Scandinavian invaders, known as the Vikings, attacked the monasteries and villages near the water and robbed them. 2) King Alfred the Great

    asked by Matthew
  117. ALGEBRA

    Find three ordered pairs that satisfy the equation. y = 5 x - 4

    asked by Daniel
  118. Physical Science

    I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter

    asked by mel
  119. Applied Calculus

    An underground electricity cable is to be laid between two boat docks on opposite banks of a river. One boat dock is 600 feet downstream from the other. The river is 200 feet wide. If the cost of laying the cable is $50 per foot under water and $30 per

    asked by Trisha
  120. math

    Let f(x) = ax^3 + bx^2 + 3x – 4. If f(x) is divided by (x – 2), the remainder is 2. When it is divided by (x – 1), the remainder is -2. Find a and b.

    asked by rick
  121. Physical Science

    I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?

    asked by mel
  122. english

    persuasive appeals (A) tone (D) ethos (E) pathos (B) logos (C) A) an appeal to logic B) the emotions that a speaker demonstrates towards his or her subject C) an appeal to the credibility of the speaker D) an appeal to a sense of right and wrong E) devices

    asked by kevin
  123. Physical Science

    I need some help. I have tried working this problem and can't get it. What is the mass of the Sun, in kilograms, based on the revolution period and distance from Venus?

    asked by mel
  124. Applied Calculus

    If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height

    asked by Trisha
  125. Math

    June rides the 15 foot tall ferris wheel at the city fair. She enters the ride at the bottom. If the ride makes 8 complete rotations before stopping, what is the total distance that June travels?

    asked by Joe
  126. Calculus

    Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

    asked by Samantha
  127. writing

    Can someone help me describe the peruasive appeal of Dr. Kings "I Have a Dream" speech, and refering persuasive devices and literary elements in the answer

    asked by kevin
  128. Calculus

    Are the points P(1,2), Q(7,3) and R(-2,1) o the line with vector equation r=(19,5) +s(6,1), SeR

    asked by Jake
  129. Calculus

    Which plane goes through the origin and is perpendicular to the line r=(2,-2,1) + s(2,3,-4), seR? a) 2x-2y+z=0 b) 2x+3y-4z=0 c) 2x+3y+z-4=0 d) none of the above. I got D, none of the above. I have substituted and couldn't find the answer equal to zero.

    asked by Jake
  130. government

    For what reasons have many developing African nations rejected capitalism in favor of various forms of socialism? Can someone help me?

    asked by kevin
  131. government

    what are some of the drawbacks of globalization for the American economy? Please can someone help me?

    asked by kevin
  132. Chemistry(Please help)

    The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ? My answer is [Hg2^2+^][2I^-^]^2^ Would you agree?

    asked by Hannah
  133. physics

    An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What

    asked by kelly
  134. English

    Can I use the simple past (as used by Shakespeare) to refer to the initial relationship between Prospero and Caliban? I added a few more sentences. 1) One day Caliban tried to rape Miranda, so Prospero gave up taking care of him. 2) At the beginning

    asked by Matthew
  135. ALGEBRA

    Solve the system. $ \left\{ \begin{tabular}{l} $ y = x + {\color{red}-2} $ \\ $ y = -{\color{red}3} x + {\color{red}10} $ \end{tabular} \right. $

    asked by Daniel
  136. Trig-desperate

    f(x)=sin2x and g(x)=1/2tanx for x is the element of [-90;180] 8.1)calculate the x-coordinates of the points of intersection of f and g.

    asked by Piwo
  137. Trigonometry

    Find the supplement of 8pi/17.

    asked by Rina
  138. English

    I left out the following sentences. Can you please check them? I hope they are the last on the same subject. I really rely on your invaluable help. 1) Caliban feels like a slave. He has o obey Prospero's orders because of Prospero's magic powers. There is

    asked by Matthew
  139. physics

    State how the centripetal force is provided in the case of a satelite orbiting the earth

    asked by Cassandra
  140. msu

    As compared to its first year of operation, ABC company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 2-4 was $45,000 over the first year’s sales of $150,000, how much did ABC grow in year 2?

    asked by nicole
  141. English

    Does everybody have a dark side? I need to write 4 paragraphs and I don't know how to start.

    asked by Rina
  142. math

    width to length ratio is 2:3 what is the lenght of the picnic table if the width is 26

    asked by Anonymous
  143. interior decorating

    the principle of color

    asked by sandra
  144. American Literature

    To what does the title of the play Dutchman by Amiri Baraka allude?

    asked by Eric
  145. PHYSICS

    A beam containing one hundred billion (i.e. 1x10^11) electrons moves perpendicula to a 4.0 Tesla magnetic field and is deflected by a 12 N force. (The electrons has a negative charge of 1.6 x 10^-19) How much total charge is contained in the beam? How

    asked by GRISSELL
  146. PHYSICS

    A 0.75 Tesla bar magnet is placed inside of a coil made up of 350 turns of wire, each loop having an area of 0.002 m^2. How much electromagnetic flux is created when the magnet is quickly pulled out of the coil? How much voltage is induced in the coil if

    asked by GRISSELL
  147. Trig

    A ferris wheel has a 14 meter diameter and turns counterclockwise at 6 rpm. a) Assuming that the center of the wheel is the origin of an x-y coordinate plane, write functions to find the position (x,y) of a rider that starts at the bottom of the wheel. b)

    asked by Lisa
  148. Calculus

    The seesaw principle: As you probably know, any two persons can balance each other when sitting on opposite sides of a seesaw, regardless of their weights. It is only necessary that each person contribute the same moment — calculated by multiplying

    asked by chamy
  149. Science

    There are two objects of the same size.However, one object is made of wood, and the other object is made of plastic. Which of the following properties of the objects will be the same? A)mass B)texture C)volume D)weight Thanks!!!

    asked by Bella help please
  150. scientist

    Describe the changes in scientific knowledge?

    asked by Sydney
  151. Probability

    Service time, T, at an auto center has a Weibull distribution with parameters θ=3.7 and β=1.35. What is the probability that at least 8 of the next 10 customers will have to wait more than 4.69 hours? What is the expected number of customers that will

    asked by Jack
  152. Chemistry

    A 1.5 liter flask is filled with nitrogen at a pressure of 12 atmospheres. What size flask would be required to hold this gas at a pressure of 2.0 atmosphere?

    asked by Imani
  153. Algebra

    solve: (1/(x-10)+(1/20)=(1/(20(x^2-100))

    asked by Jason
  154. science

    If 1.5 gals of 70 degree water is mixed with .25 gals of 32 degree water what would the temprature be?

    asked by kevin
  155. Chemistry PLZ HELP!!!!!

    explain the difference between hydrogen bonds and dipole dipole forces.

    asked by Maci
  156. english

    Choose and Place MLA, APA, or Both in the blank. _____1. In a work with a single author, the author’s last name and initials are listed in the works cited entries. _____2. In a work with a single author, the author’s full last name and first name are

    asked by john
  157. chemistry

    You have two SCUBA tanks, one containing air( 80% 20%) and the other containing a nitrox mix that is 60% nigtrogen and 40% oxygen. The volume of each tank is 10.00 L. Determine the number of moles of nitrogen and oxygen in the air tank.

    asked by danila
  158. Chemistry PLZ HELP!!!!!

    what conditions must exist for a polyatomic molecule to be nonpolar?

    asked by Maci
  159. statistics

    the mean annual income for adult women in one city is and the standard deviation of the incomes is The distribution of incomes is skewed to the right. For samples of size 30, which of the following statements best describes the sampling distribution of the

    asked by Taisha
  160. Chemistry

    What is the balanced equation of gaseous phosphorus pentachloride decomposed to chlorine gas and phosphorus trichloride.

    asked by Allyson
  161. English

    1. what sources should you include in your works cited list? a. all of the sources that you read whether you used them in the paper. b. only the sources that have a parenthetical citation in your paper. c. most of the sources that have a parenthetical

    asked by jay
  162. Statistics - Math (Please Please help!!)

    You are an owner of a firm that manages other small manufacturing companies, which pay you to employ temporary salespersons to sell their products. The owner of one of these firms wants to increase their sales and promised to give you a bonus of $12,000 if

    asked by Esther
  163. manotriy

    Surveys conducted in the months after 9/11 found a growing willingness on the part of the American public to

    asked by monty
  164. Math

    Brandon's bedroom floor is 12ft by 8ft. How many square feet of carpet are needed to replace his old carpet?

    asked by Joe
  165. physical science

    What is the Ratio for Al2(CrO4)3

    asked by Anonymous
  166. Physics (Please help!)

    Three resistors of different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced? I can only find five... but the answer key says eight.

    asked by DCM
  167. Chemistry(Please help)

    What is the pH of a 5.06E-2 M aqueous solution of sodium acetate? I know that I would set this up the same way I did for the previous question that I posted. I am just confused on how to find the Ka. I know it is kw/kb but for what compound is what I do

    asked by Hannah
  168. physics

    An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What

    asked by kelly
  169. math

    a monkey is jumping 5 meter in length . a tree is 500 meter in length . how many jumping is required to reach the top of the tree by that monkey?

    asked by sangvi
  170. writing

    what happens during a doctor's visit?

    asked by Celest
  171. us history

    what did the constitution do and whawt were the effects of the constitution

    asked by Anonymous
  172. Chemistry

    What are the general equations for reaction of 1. Strong acid and weak base 2. Strong base and weak acid?

    asked by chamy
  173. Math

    The ratio of Maya's beads to Kayla's beads was12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 5/7 of Kayla's beads were left. How many more beads did Maya have than Kayla in the beginning? Find the ratio of Maya's beads to Kayla's

    asked by T
  174. Chemistry

    A gas sample has an initial volume of 4.5 liters at a pressure of 731 mmHg. If the volume is increased to 8.9 liters, what is the pressure?

    asked by B
  175. Calculus

    An open hemispherical bowl of radius R is slowly draining through a small hole of radius r in the bottom of the bowl. Let g be the acceleration due to gravity and y be the depth of the water (which means the distance from the water surface to the hole).

    asked by chamy
  176. Math

    June rides the 15 foot tall ferris wheel at the city fair. She enters the ride at the bottom. If the ride makes 8 complete rotations before stopping, what is the total distance that June travels?

    asked by Cathy
  177. Math

    A jar contains 6 red marbles and 10 blur marbles all of equal size. if Dominic were to randomly select 1 marble without replacement and then select another marble from the jar, what would be the probability of selecting 2 red marbles from the jar.

    asked by Lori
  178. physics

    Three point charges are arranged as shown. − + + −6.1 nC and 1.6 nC .4m apart 1.6 nC and 3 nC .088m apart What is the electric field strength at 1.8 m to the right of the mid

    asked by amanda and leah
  179. Chemistry

    Calculate the molality of a solution prepared by dissolving 31.6 g of Fe2O3 in 750. g of water

    asked by Tina
  180. Physics

    An air bubble of volume 15 cc is formed at a depth of 50 m in a lake. If the temperature of the bubble while rising remains constant then what will be the volume of the bubble at the surface?(Given: g=10 m/s2 & atm. pressure = 1.0 * 100000 Pa)

    asked by Tulika
  181. chemistry

    according to american insurance companies a driver will travel 12,000miles in a single year.gasoline may be taken as primarily C8H18,octane, and the reaction with dioxygen is given below.the driver's vehicle gets 25.0miles per gallon.the density of octane

    asked by karen
  182. 6th G Math

    Sam has started babysitting to earn extra money. On Thursday night she earned $26, on Friday night she earned $19, and on Saturday night she earned $24. What is the mean amount of money she earned during the weekend?

    asked by Lauren
  183. to ms.sue

    i mean when you like visit the doctor. when you go to a doctor's appointment.

    asked by Celest
  184. Math

    In archery class, Jocelyn missed the target 5 times in 40 shots. What is the probability that her next shot will miss the target?

    asked by Max
  185. Calculus

    Determine the value of k that makes the line (x+2)/4=(y+1)/5=(z-3)/3 and r=(1,3,6 +s(-2k,2,k), SeR, perpendicular.

    asked by Jenny
  186. Pre-calculus

    1)Which term best describes the linear programming situation represented by x+y=2 why is the answer infeasible? 2)Describe the linear programming situation for this system of inequalities. x < 1 y > 0 3x + y < 5 why is the answer unbounded?

    asked by hanna
  187. Pre-calculus

    1)Which of the following results in the graph of f(x) = x2 being expanded vertically by a factor of 4? the answer is f(x) = 4x2. can you explain how. 2)Which is true for the graph of y=(x^2-9)/(x^2-4). the answer is vertical asymptotes at x = ±2 . please

    asked by bordo
  188. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked by Maci
  189. accounting

    which one of the following contingencies must be accrued on the balance sheet

    asked by jo
  190. science

    Rank the species from strongest to weakest base: Cl-, OH-,NH2

    asked by Charlie
  191. Physics

    Compute the linear momentum and angular momentum of a Frisbee of mass 0.160 kg if it has a linear speed of 2.00 m/s and an angular velocity of 50.0 rad/s. Treat the Frisbee as a uniform disk of radius 15.0 cm.

    asked by Nem
  192. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked by Maci
  193. Chemistry

    How many mL of .48 M NaOH are needed to react with 2.00 moles of H3PO4?

    asked by Sam
  194. physics-HS

    Just as a car tops a 49 meter high hill with a speed of 77 km/h it runs out of gas and coasts from there, without friction or drag. How high, to the nearest meter, will the car coast up the next hill? plzzz help!

    asked by lenny
  195. chemistry redox titration

    calculate the volume of a 0.02M mno4- solution that is required to react completely with 10.0ml of 0.1M c2o4-2

    asked by carla
  196. Science 4th Grade

    Bats and dolphins both hear a ______ than humans do... a.smaller range of pitches b.smaller range of frequencies c.larger range of resonances d.larger range of pitches and frequencies

    asked by Visitor
  197. Chemistry

    Why B(CH3)3 cannot be Lewis Base??

    asked by Charlie
  198. History

    What struggle was there between the president and Congress for dominant political power within the federal government from 1850-1868? I know there was the reconstruction problem and how congress basically took over. What else?

    asked by Lala
  199. investments

    my broker recommends that i purchase a stock for $60.00. stock pays $2.40 in annual dividends and expects to grow 8%/year. Is this a good buy?

    asked by wjc
  200. chem

    If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^- solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation?).

    asked by mike
  201. Physics (12th Grade)

    What will be the amount of work done in increasing the volume of 10 mols of an ideal gas from one litre to 20 litre at 0C?

    asked by Tulika
  202. Science

    I need help in Science Project. The topic is called "How does the size affect the force of magnetism". I didn't see any procedure in how to do this particular topic can you help me?

    asked by Richard
  203. Chemistry

    In a coffee cup calorimeter, 50.00 mL of HNO3 (aq) and 50.00 mL of KOH(aq) were mixed. The temperature of the resultant solution increased 6.5 C. What is the Delta H of this reaction?

    asked by Jaime
  204. math

    marcie, kim and yvonne are on the same softball team. (A). During the last season . Marcie hit 3 less than twice the number of home runs that kim hit let h represent the number of home runs that kim hit . write an expression that represents the number of

    asked by john
  205. Chemistry

    Helium - oxygen mixture is used by deep sea divers in preference to nitrogen - oxygen mixture. Why?

    asked by Molly(its urgent)