Questions Asked on
July 11, 2013

  1. physic

    A satellite used in a cellular telephone network has a mass of 2010kg and is in a circular orbit at a height of 770km above the surface of the earthTake the gravitational constant to be G = 6.67×10−11N⋅m2/kg2 , the mass of the earth to be me =

    asked by cuzer
  2. Trigonometry

    a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

    asked by Paul
  3. Math- important!!!

    Samantha is a baseball player, she has a batting average of 0.280. a) find the probability that at least 3 hits in her next 5 times at bat (12 marks) b)what is Samantha's expected number of hits in her next 10 times at bat? (3 marks)

    asked by Celina
  4. physic

    Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.

    asked by mert
  5. Calculus

    The percentage of alcohol in a person's bloodstream t hr after drinking 8 fluid oz of whiskey is given by the following equation. A(t) = 0.26te-0.3t , (0 t 12) (a) What is the percentage of alcohol in a person's bloodstream after 1/2 hr? After 6 hr? (Round

    asked by Shan
  6. Math

    A farmer wishes to put a fence around a rectangular field and then divide the field into three rectangular plots by placing two fences parallel to one of the sides. If the farmer can afford only 1600 yards of fencing, what dimensions will give the maximum

    asked by Kelsie
  7. Statistics

    1. z test 2. t test for independent samples, and 3. t test for dependent samples Hi! I really need help with this statistics. Its just that you suggest one psychological research question that could be answered by each of the following types of statistical

    asked by Luah
  8. science

    Which gas is a source of natural groundwater pollution? A. Oxygen B. Radon C. Hydrogen D. Carbon i think its a

    asked by SELENITAA
  9. Math

    An object is projected vertically upward from the top of a building with an initial velocity of 144 ft/sec. Its distance s(t) in feet above the ground after t seconds is given by the function s(t) = −16t2 + 144t + 120. A) Find its maximum distance above

    asked by Mack
  10. Consumer Math

    How many cement blocks are needed to construct a wall 0.5 ft. thick, 6 ft. high, and 60 ft. long if it takes 10 standard cement blocks to make 1 cubic foot of wall?

    asked by Athena
  11. algebra 2

    Suppose y varies jointly with x and z, and x = 4 when y = 8 and z = -2.What is the value of x when y = 12 and z = 3? A. -4 B. 4 C. 15 D. 9

    asked by Sam
  12. Chemistry

    Are these reactions Exothermic or Endothermic? How do I know? 1.) Mg(OH)2(s)Mg+2(aq) + 2OH-(aq) Saw solution lighten from medium pink to very light when heated in hot water bath. (It had phenolphthalein drop for indicator.) 2.) HSO4-(aq)+

    asked by Ann
  13. Chemistry AP

    I'm using Zumdahl 7th Edition Chemistry Book and I'm having trouble with some practice problems in the first chapter. Here are a few: 87: Sterling silver is a solid solution of silver and copper. If a piece of a sterling silver necklace has a mass of 105.0

    asked by Emily
  14. physic

    A Ferris wheel 26.0m in diameter rotates once every 15.0s What is the ratio of a person's apparent weight to her real weight at the top?

    asked by cuzer
  15. readings

    In his 1992 speech, how did Mikhail Gorbachev view the impact of the global communications revolution on the people of less-developed countries?

    asked by luc
  16. History

    The creation of minority group status largely depends on:     A.     The nature of the contact situation     B.     The size of the dominant group     C.     Whether the dominant group is assimilationist or pluralistic     D.     The degree

    asked by Melissa
  17. math

    3 out of every 1,000 bulbs produced are defective. If 5,000 bulbs are produced, how many would you expect to be defective

    asked by Anonymous
  18. Math

    A doorway has the shape of a parabolic arch and is 16 feet high at the center and 8 feet wide at the base. If a rectangular box 12 feet high must fit through the doorway, what is the maximum width the box can have?

    asked by Maya
  19. Geography

    Which of the following statements about Southern South America is true? A. Paraguay is the smallest country of the subregion. B. Influence of Roman Catholicism has sharply declined in Argentina. C. The Argentine economy was devastated by the end of 2001

    asked by Anonymous
  20. physics

    75 kg block is dropped from a height of 6 m. How much kinetic energy does it have when it has fallen halfway?

    asked by daviaa
  21. Math(angle of depression) i need help please..

    An observer on top of a cliff 25m above sea level views a boat on the sea at an angle of depression of 35. How far is the boat from the foot of the cliff?

    asked by Alexander
  22. Trigonometry

    a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

    asked by Paul
  23. Calculus

    In a study prepared in 2000, the percentage of households using online banking was projected to be f(t) = 1.7e0.71t , (0 t 4) where t is measured in years, with t = 0 corresponding to the beginning of 2000. (Round your answers to three decimal places.) (a)

    asked by Shan
  24. Geography

    1. In Brazil, the indigenous population was around 3.5 million before the arrival of Europeans. Today, the indigenous population is around A. 1.5 million. B. 500,000. C. 2 million. D. 200,000. My answer is A

    asked by Anonymous
  25. Computers C++ (2)

    Thank You Steve For All The Help! (If its you helping me with this one) 1.) Consider the following array definition: int values[ 5] = { 4, 7, 6, 8, 2 }; What does the following statement display? cout

    asked by Thomas
  26. Chemistry

    Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical make-up composition but a different structure, hence, different properties c. the same properties but with different chemical

    asked by Eliza
  27. chemistry

    What reagents would I have to use to convert a trans alkene into a cis alkene? example: trans-3-heptene to cis-3-heptene My thoughts: I feel as if I would use Br2/CCl4 first to create a dihalide, then possibly 2NaNh2 and finally a lindlar catalyst to end

    asked by chelsea
  28. Business Statistics

    You wish to learn the proportion of MBA students that are female within 3%, and with 98% confidence. How large of a sample should you get?

    asked by Tesa
  29. Math

    Flights of leaping animals typically have parabolic paths. The figure illustrates a frog jump superimposed on a coordinate plane. The length of the leap is 9 feet, and the maximum height off the ground is 3a feet. Find a standard equation for the path of

    asked by Kelsie
  30. Computers C++

    1.) Consider the following array definition: int values[ 5] = { 4, 7, 6, 8, 2 }; What does the following statement display? cout

    asked by Thomas
  31. Chemistry

    At 10C zinc reacts with 2.0M sulphuric acid to produce 17 mL hydrogen gas in 20 s a) what is the rate of this reaction? b)What volume of hydrogen might be produced in 20 s at 30C?

    asked by Tash
  32. math

    A. One board is one-third the length of another. Six times the sum of the length of the short board and -10 is equal to the length of the longer board decreased by 11 inches. Find the length of the longer board. B. The length of a rectangle is 4 feet more

    asked by gary
  33. Chemistry

    A 0.355 g sample of a solid, monoprotic acid having a molar mass of 121 g/mol requires 18.47 mL NaOH for neutralization. Calculate the molarity of the NaOH solution. I got 0.159 M NaOH

    asked by <3
  34. English

    Hey, just look up the grammar, tenses and wheter I use the right words, ok? It is for an oral excercise so the spelling isen't important. Thanks and now the text: Mandy: Good Morning and welcome to the morning show with me: Mandy Melrose! Today I wanna

    asked by Julie
  35. Physics

    A 3 kg object falls from a height of 10 m. What is its velocity just before it hits the ground? How would this problem differ if the object falling from a height of 10 m only had a mass "m"?

    asked by Van
  36. maths

    Find max and min values of y=sinx sin2x

    asked by mahesh
  37. physics

    A car (mass = 1150 kg) is traveling at 26.7 m/s when it collides head-on with a sport utility vehicle (mass = 2030 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle

    asked by rodney
  38. Physics

    When you're riding a city bus sometimes there are no seats left and you have to stand. Why are there vertical and horizontal metal hand bars on the bus? Use the concept of inertia and Newton's 1st law

    asked by Jai
  39. Algebra 2

    I need help...especially finding out the time... At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74

    asked by Anonymous
  40. Physics Experiment

    In the experiment Standing Waves,if you continue to lwer the water level after recording l(m) at the first sound resonance at fixed tuning fork frequency, you will hear the sound again but sound gets louder (second resonance). At this point, by what factor

    asked by khadijah
  41. gen physics

    A 152 kg boat is at rest in a calm lake at the end of a dock. A 85.6 kg person running down the dock leaps into the boat with a horizontal velocity of 4.58 m/s. Ignore all effects of friction and resistance due to the water. a) Find the kinetic energy of

    asked by rodney
  42. Physics

    A 3 kg object falls from a height of 10 m. What is its velocity just before it hits the ground? How would this problem differ if the object falling from a height of 10 m only had a mass "m"?

    asked by Van
  43. Chem

    Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical make-up composition but a different structure, hence, different properties c. the same properties but with different chemical

    asked by Eliza
  44. Statistics

    Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.

    asked by Rey
  45. Law and Ethics in medicine

    Elizabeth says duty of care is the obligation health care workers have toward patients. Randy says professional etiquette is the obligation health care workers have toward patients. Who is correct? A. Only Randy is correct B. Neither is correct C. Only

    asked by Kim
  46. Physics

    When you're riding a city bus sometimes there are no seats left and you have to stand. Why are there vertical and horizontal metal hand bars on the bus? Use the concept of inertia and Newton's 1st law

    asked by Jai
  47. math ,geometry

    John is building a fence that is 6 feet high and 18 feet wide to put around his garden. He has two sizes of boards that he can use. One is 2 feet by 6 feet and the other is 4 feet by 6 feet. John can put the boards either horizontally or vertically and he

    asked by GT
  48. PE

    If 1 liter of the Pentland field formation water (see lecture power-point) is mixed with equal volume of seawater and noting that BaSO4 solubility under that condition is 2 mg/liter, how much BaSO4 precipitate would be there? (Hint: watch out for which ion

    asked by Jenny
  49. statistics

    The same calculus exam has a normal distribution with a mean of 76 and a standard deviation of 6. Find the percentage of students that scored between 65 and 90.

    asked by Anonymous
  50. maths

    find the circumference of a circle whose radius is: 1. 8 inches 2. 4 inches

    asked by leena : aww maths !!! help me
  51. Algebra

    Simplify the square root of of the fifth root of 64q^8v^6 or (√^5√64q^8v^6).

    asked by Kim
  52. readings

    Rather than promoting goods and manufactures, the 1939 New York World's Fair sought to emphasize

    asked by luc
  53. writing

    1)Al:(who's,whose)car is in my parking space? 2)Ben:(it's,its)Fred's. 3)Al:(know,no,his car is red.It might be the Jones'. 4)Ben:(their,there,they're)car is green.(here,hear)come Bob and Tony. 5)Tony:Hi!Isn't my (knew,new)car(grate,great)?

    asked by Nick
  54. theory to practice

    Which of the following is an obstacle to learning for a begining mover? A.Knowledge of what elements of the movememts to focus on. B. Chronic indifference characteristic between birth and age three. C.shorter time to monitor perceptual input from the

    asked by cloie
  55. Algebra 2...

    3|x-6| >= -2 Is this correct? x>=16/3 x

    asked by Anonymous
  56. Finance

    The balance sheet for the Raider Company shows Total assets of $12,900 financed by $3,000 of Debt and $9,900 of Stockholders' equity. For the Target Company Total assets of $4,900 are financed by $1,800 ofDebt and $3,100 of Stockholders' equity.

    asked by Me
  57. sociology

    using feminism, show how Facebook has made an impact on today's technologically-advanced society.

    asked by rita
  58. grammar

    what i do and i want to do

    asked by charlene
  59. since

    where does fennec fox live

    asked by azan sameeh
  60. Physics

    120 grams of metal at 88 degree celcius is poured into a 70 grams isolated cup contains 250 grams of water at 16 degree celcius. The final temperature of the mixture is 17.5 degree celcius. Determine the specific heat capacity of the metal?

    asked by vench
  61. Excel Filtering

    Hi I'm trying to filter data between 3 different columns. I want it so the data filtered so data in column a is smaller than column b, which is smaller than column c. I try to filter but it only allows me to use filter criteria from the individual column.

    asked by Dom
  62. Math

    Convert each improper mixed number to a whole number or a mixed number: (A) 24 2/2 (b) 7 4/2 (c) 2 5/3 (d) 9 5/4 (E) 36 3/2 (f) 32 4/3 (g) 3 3/3 (h) 10 8/8

    asked by Jasmine
  63. Calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y = 4(x^(1/2)), y=4, and 2y +2x = 6 I keep getting an area around 21.3 but it is incorrect. Am I close? Thank you!

    asked by Donna
  64. heeeeeeelp math

    For every positive integer n, consider all monic polynomials f(x) with integer coefficients, such that for some real number a x(f(x+a)−f(x))=nf(x) Find the largest possible number of such polynomials f(x) for a fixed n

    asked by lin
  65. Medical Transcription

    I need to find someone who knows how to do Electronic Medical Records so I can proceed with my lessons. Thank you.

    asked by Lisa
  66. MATH

    A data set has the following points: (0, 2), (4, 1), (6, 0) The slope of the linear regression line is -0.32. Find the y-intercept of the linear regression.

    asked by J
  67. Math 116

    1.IN a given training week, a swimmer completes 1/4 mile on day one, 2/5 mile on day two, and 3/7 mile on day three. How many total miles does the athlete swim in the given week? a. 151/140 miles b.3/70 miles c.3/8 miles d.37/35 miles 2. The temperature on

    asked by Queta
  68. Written Communication

    He was arrested for A. adroitness. B. philanthropy. C. bigamy. D. misogyny.

    asked by Anonymous
  69. social studies

    10. Heinz is a recent immigrant from Germany. Which of the following will NOT contribute to his feeling of being American? (Points : 1)

    asked by teri
  70. Pre-Algebra

    c-5/4=3 Please explain. I don't get it!

    asked by Celest
  71. Psychology HELP !

    For your opinion, do you think personality disorders should be an inclusion as a diagnostic category in the next version of the DSM ? On the other hand, do you think personality disorders is a fact or a fiction? :)) Thank youu

    asked by Luah
  72. Math.

    On any given day, there is a 30% chance that Jenny will wear jeans. If she wears jeans, there is a 60% chance that she will wear a t-shirt. A) determine the probability that Jenny wears jeans and a t-shirt on any given day. B)determine the probability that

    asked by Tasha
  73. Maths(help me plz..!

    The sides of a triangle are of lenths x*-y*, x*+y* and 2xy units respectively. Prove that the triangle is a right angled triangle

    asked by Alexander
  74. Math

    As a means of getting exercise, you choose from going for a run, riding your bike or going for a swim. Your previous behavior shows that you bike 30% of the time and swim 15% of the time. What is the probability that the next time you exercise you will go

    asked by Tasha
  75. Com/340

    what are your own experiences and perceptions about biased reporting in your hometown, county or state.

    asked by Anita
  76. Com/340

    Do you think reporters should forfeit political involvement, including party registration and voting?

    asked by Anita
  77. Business Communications - English 101

    revised.... just wanted to make sure I did these two paragraphs correctly. This is for an interoffice memo It was given to us with no punctuation and all sentences ran together. Thank you Ed, I have made several changes to our staff to help accommodate the

    asked by MaryBeth
  78. math

    How many integers from 1 to 1000 (exclusive) are divisible by the cube of an integer larger than or equal to 2?

    asked by anonymous
  79. math

    fine the total amount in the compound interest account? $8000 is compound semiannually at a rate of 10% for 20 years

    asked by Anonymous
  80. Calculus

    Find the derivative of the function. f(x)=(e^x+e^(-x))/2

    asked by Anonymous
  81. Calculus

    Find the derivative of the function. f(s)=(s6 + 1)e-s6

    asked by Anonymous
  82. Calculus

    Find an equation of the tangent line to the graph of y = e-x2 at the point (2, 1/e4).

    asked by Anonymous
  83. algebra

    Write the equation of the line in slope-intercept form that passes through the point (3, -2) and has a slope of 2.

    asked by brianna
  84. Excel Filtering

    Return 2005 Return 2006 Return 2007 I have a data table with returns for 3 different years. I want to use a filter that only includes records where the return is increasing each year(i.e.: 2005

    asked by Dom
  85. Math

    A basketball team won 10 of its first 20 games. If then won its next 5 games. What fractional part of its total number of games did it win?

    asked by Mohammed
  86. alg2 check?

    1.)...(2x)(3x^3)? I said it was x=5 am I right?step by step plz? 2.)....(4xy^2)^3 im not sure about this one

    asked by tyneisha
  87. Thermodynamics

    1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and

    asked by Danny
  88. algebra 2

    solve equation for x atate any restrections ax-bx+2a

    asked by Andrew
  89. Math

    Solve for x 35:4=x:2

    asked by Steve
  90. life orientation

    identifie 5 ways in which the environment /human factor impact on the community

    asked by hellen
  91. Math

    W varies directly as x,y,and z. If w=36 when x=2, y=8, and z=12 find w when x=1 y= 2, and z=4

    asked by Steve
  92. Math

    Over a fixed distance speed r varies inversely as time t. If the speed of a car is 30 mph when the time is 6 seconds what would the speed be of the car if the time was 4 seconds

    asked by Scott
  93. Physics

    An 8 kg ball is moving at 4 m/s. Work is done on the ball to give it a speed of 12 m/s. What is the ball's initial kinetic energy? What is the ball's final kinetic energy? What work was done on the ball?

    asked by Jai
  94. mat221

    3X(14-12)+29 divide by 7

    asked by Anonymous
  95. Geography

    The _______ were responsible for the forced migration of more people from Africa than any other colonial power. A. British B. Dutch C. Portuguese D. Spanish

    asked by Anonymous
  96. children's literature

    which of the following statements about literary is true

    asked by Anonymous
  97. math

    The volume of a box with square base is 90 cubic centimeters. If the height of the box is 15 centimeters, what is the length of each side of the base?

    asked by Kaydee
  98. Math(reiny)

    On the earlier questin would the speed be faster not slower?

    asked by Scott
  99. socials 11

    why was totalitarian needed for ww2?

    asked by alyssa
  100. history

    i need to write a short note on mughal empress princess jahanara

    asked by leena
  101. Pre-Algebra

    I need help on these two questions: -d/6+12=-7 b+1/3=2

    asked by Celest
  102. Theory to practice

    a child throws a ball with speed and accuracy when he plays catch with his teacher, but throws are slower and less accurate when he plays with a group of friends. this diffrence is explained by.

    asked by cloie
  103. Pre-Algebra

    3/4q-7=8 *please also post a website

    asked by Celest
  104. theory to practice

    What fundamental motor patterns do girls tend tp attain more quikly than boys do?

    asked by cloie
  105. Writing

    On the whole, peoples experiences with department store cards are good except when they loose a card. Can you tell me if i used except and peoples corectly

    asked by Nick