Questions Asked on
July 15, 2010

  1. college physics

    An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.3×10^7 m/s. What was the electron's speed as it left the negative plate? the voltage is 650V and the charge of q1 is 1.7*10^-9 and the charge of q2 is

    asked by katie
  2. check answer

    rocket launched from a 90 meter high building, upward speed of 20 meters per second. what will it's height be after 3 seconds. given the polynomial h + vt -4.9t^2 90 +(20) (3) - 4.9 (3)^2 Is the answer 130.4 ?

    asked by christy
  3. other

    why do u say d??

    asked by Jane
  4. business law

    2) Britain has issued the following regulation. “Whereas E. Coli and various other bacteria have caused an outbreak of disease worldwide and whereas beef products are prone to illness causing bacteria and whereas children often consume beef products it

    asked by Leonard
  5. physical

    Below i copied the assignment but, I only need help finding a peer reviewed article about the effects of optimism on physical help. Can someone PLEASE help me fast? Here is the assignment.... Find a peer reviewed article which discusses the effects of

    asked by QueenP
  6. 9th grade

    The lengths of 2 legs of a right triangle are 16 cm and 30 cm. What is the length of the hypotenuse?

    asked by david
  7. chemistry

    Determine the overall orders of the reactions to which the following rate laws apply: a) rate= k[NO2]^2 b) rate = k c) k [H2][Br2]^1/2 d) k [NO]^2[O2] is it.. a. 2 b. 0 c. 1 1/2 d. 3

    asked by Jin
  8. chemistry

    how do you solve this problem? consider the reaction A->B the rate of the reaction is 1.6 x 10^-2 M/s when the concentration of A is 0.35 M. Calculate the rate constant if the reaction is a) first order in A and b) second order in A.

    asked by Jin
  9. Pythagorean Theorem

    A ladder resting against the side of a building reaches 32 ft up the building. If the ladder is 40 ft long, how far from the building is the base of the ladder?

    asked by david
  10. Chemistry

    A solution is made by mixing NaOH and HNO3. Write a balanced equation for the reaction that occurs between the solutes. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

    asked by Wende
  11. Statistics

    Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). Bellevue Hospital in New York City uses 100.6 °F as the

    asked by Christy
  12. chemistry

    the chapter is about chemical kinetics Reaction mechanisms: What does it mean by mechanism of a reaction? What is an elementary step? what is the molecularity of a reaction?

    asked by Jin
  13. Chemistry

    Hello, What is the hybridization of an H atom on a methane? As far as I understand, the hydrogen has 1 s orbital which bonds only to carbon, so does not have any hybridization. Is this correct? Thank you

    asked by Nat
  14. chemistry

    How do you solve this problem? In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a shpere) is 10.0cm^3. Calculate the surface area of the catalyst. IF the sphere is broken down into eight

    asked by Jin
  15. English

    How can i use the word cloy? i wrote this sentence but i'm not sure if i used the word correctly... "At first I thought you were appealing but now that i realize that your just a cloy." I need help!! :D thanks in advance.

    asked by Julie
  16. billing

    what are the implications of simultaneous federal and state involvement in the insurance process

    asked by Julie
  17. Grammar

    How can i use the word cloy? i wrote this sentence but i'm not sure if i used the word correctly... "At first I thought you were appealing but now i realize that your just a cloy." I need help!! :D thanks in advance.

    asked by Julie
  18. poetry

    WHERE DO THE SLASHES GO IN THE SYLLABLES OF ROBERT FROST'S POEM/THE ROAD NOT TAKEN

    asked by JAMIE
  19. chemistry

    how would you calculate the weight of percipitate of AgBr that will dissolve in 400 ml of water?

    asked by ashley
  20. 11th grade,physical science

    what are the advantages and disadvantages of chlorine? what is chlorine?

    asked by doreen
  21. english

    What does it mean when the teacher says "There is no need to rekey the question(s)? Thanks in advance.

    asked by teri
  22. geometry

    If Úc ≅ Úd, mÚc = 5x - 7, and mÚd = 3x + 25, how many degrees are in Úc?

    asked by shenise
  23. college

    the perimeter of the rectangle is 294cm, the width is 57 cm, find the length

    asked by harriett
  24. composition

    Why do you need to use appropriate punctuation, including plurals and possessives, in your writing?

    asked by Anonymous
  25. algebra

    w^2-3w-40=0 how are you supposed to solve this and how do you find the solution for w

    asked by jen
  26. algebra

    how do you find the x-intercepts y=x^2+2x-3

    asked by ashley
  27. algebra

    can someone please tell me if this is right or this simple really? the question is to express using a positive exponent. m^-6 so do you really just change it to m^6 so that it is positive? Or how do you go about that?

    asked by ashley
  28. Phyiscs

    Please show work You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 270 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the

    asked by Anonymous
  29. 10th grade

    Using a dictionary look up and then list four definitions of the word nice that you would use in a paragraph to develop this topic sentence: "The word nice is surprisingly ambiguous."

    asked by Jenelle .r
  30. science, ipc

    Which best describes longitudinal waves? ________________________________________ A. Compressions and rarefactions make up longitudinal waves, which can only travel in matter. B. Longitudinal waves carry sound energy and are made up of crests and troughs.

    asked by Superman
  31. physics

    In the figure below, a stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 240 m. What is the greatest speed at which he can drive without the car leaving the road

    asked by Sam
  32. physics

    A bicyclist travels in a circle of radius 31.0 m at a constant speed of 5.00 m/s. The bicycle-rider mass is 88.0 kg. (a) Calculate the magnitude of the force of friction on the bicycle from the road. N (b) Calculate the magnitude of the net force on the

    asked by Sam
  33. p

    A certain string can withstand a maximum tension of 41 N without breaking. A child ties a 0.35 kg stone to one end and, holding the other end, whirls the stone in a vertical circle of radius 0.91 m, slowly increasing the speed until the string breaks. (a)

    asked by Sam
  34. math

    For the following values of x and y, calculate slope and intercept. y x 10 3 13 5 23 7 25 9 40 10 42 12 45 15

    asked by Anonymous
  35. Chemistry

    Using the activity series, explain the reason that most metals cannot exist in nature as elements but are found as compounds instead. Use specific examples to explain your answer. (Hint: Consider the reactivity of metals with water)

    asked by Emily
  36. history

    address the following points: The societal changes in Europe that led to the exploration of other lands The advances in Europe that made exploration possible

    asked by Anonymous
  37. 12th grade

    If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units.

    asked by Paris
  38. Calculus

    Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

    asked by Eileen
  39. Physical Science, ipc

    Which can you do to reduce the power consumption in your home? ________________________________________ A. Add more circuit breakers. B. Wire more parallel circuits. C. Replace 75-watt light bulbs with 40-watt light bulbs.

    asked by Superman
  40. math

    The angle of depression of two points on opposite sides of a building are on the same horizontal level with the foot of the buiding are 58 and 49 respectively from the top of the building. If the building is 38m tall, calculate the distance between the

    asked by Daniel
  41. economics

    how would a leader of a developing nation, a us citizen whose income is in the top 1%, and a us citizen whose income is in the bottom 5% talk about scarcity and trade-offs?

    asked by christina
  42. Pythagorean Theorem

    Which is closest to the length of the diagonal of a square whose sides measure 20 cm?

    asked by david
  43. multiple intelligences

    have you ever used mnemonics to remember something complicated? if so, describe the techniques you have used. what ways might you use mnemonics to be more effective college student and adult learner.

    asked by latoya
  44. Pythagorean Theorem

    7. The following are the lengths of the sides of four triangles. Which is a right triangle? Triangle EFG Triangle HIJ Triangle KLM

    asked by david
  45. math

    if the selling price is 4/3 of cost price, find the profit % in the transaction?

    asked by Susan
  46. Pythagorean Theorem

    Pythagorean Theorem - david, Thursday, July 15, 2010 at 2:10pm EFG 3,6,9 HIJ 60,156,144 KLM 56,102,105 NOP 36,48,64 The following are the lengths of the sides of four triangles. Which is a right triangle? a.Triangle EFG b.Triangle HIJ c.Triangle KLM

    asked by david
  47. Pythagorean Theorem

    Which is closest to the length of the diagonal of a square whose sides measure 20 cm? a.20 cm b.28 cm c.40 cm d.200 cm

    asked by david
  48. Physicss

    Please show work You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 270 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the

    asked by Anonymous
  49. algebra

    On January 1st a savings account showed a balance of $280. How much interest will be earned by the end of the year at an annual rate of 5 1/4?

    asked by Christina
  50. Algebra

    Hi,I have a linear model with equation p = 5.1t - 28, where p is the number of breeding pairs of birds and t is the year. I need to use algebra to find the year in which the linear model predicts the breeding pairs will exceed 500. Any help appreciated.

    asked by Si
  51. precalculus

    Hi, I need help with a problem about power functions and logarithms. It is found that logx and logy are linearly related show that y can be expressed as a power function of x. Thank you.

    asked by jen
  52. Math

    Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

    asked by Eileen
  53. physics

    1. Measurements show that there is an electric field surrounding the Earth. Its magnitude is about 100 N/C at the Earth's surface and points inward toward the Earth's center. From this information, can you state whether the Earth is negative or positive?

    asked by Nicole
  54. Physics

    "If a small planet were located 8 times as far as the Earth's distance from the Sun, what would be its period in Earth years?" (22.5 earth years) As a note, we are given a table with all of the planets' masses and radii.

    asked by Stuck
  55. math 208

    find the slope and y-intercept for each line. x+2y=3

    asked by anita
  56. math 208

    graph the line using its y-intercept and slope. y+4x=8

    asked by anita
  57. math 208

    write each equation in slope-intercept form. y+3=-3(x-6)

    asked by anita
  58. college

    Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

    asked by cyn
  59. physic

    Charge must be present at a location in order for there to be electrical potential energy. Must charge also be present at a location for there to be electric potential? I know it's no but why?

    asked by Nicole
  60. Maths

    The first term of a g.p is 2 calculate the 4th given that common ratio ir 2

    asked by The first term of a g.p is 2, calculate the 4th. Given that common ratio is 2
  61. math

    Donna does 26 sits-ups on her fifth day of practice. If she has done 5 more each day than the day before. how many sit up did she do the first day. my answer was 6 but my mom don't agree

    asked by julie
  62. math 117

    I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space

    asked by ray
  63. math

    Mitch and Jane met at the mall today. Mitch goes to the mall every 3 days and jane goes to the mall every 5 days. How many times will they meet again in the next 3 weeks? Is it 3 or 4 think it 3

    asked by julie
  64. Science: Astronomy

    How would a star regain it's state of equilibrium if the energy generation rate of a star were to become slightly smaller than it's equilibrium?

    asked by Katrell
  65. Science: Astronomy

    Why have so few visual binary star systems been fully analyzed to reveal individual masses?

    asked by Katrell
  66. algebra math 208

    write each equation in slope-intercept form y+3= -3(x - 6)

    asked by anita
  67. Science: Astronomy

    Why do extremely cold stars look fainter than we might expect from their luminosities and distances?

    asked by Katrell
  68. Science: Astronomy

    Why can't we use solar type stars as spiral tracers? What type of stars make good spiral tracers? Why? What characteristics do they have to perform this function?

    asked by Katrell
  69. Science: Astronomy

    How many times longer does a 0.50 -M star fuse hydrogen at it's core than does a 1.5 -M star?

    asked by Katrell
  70. Math

    1. Identify the degree, leading term and leading coefficient of each polynomial function. A. f(x)= x(x+1)(3x+1)(x-2) B. f(x)= -16+3x^4 - 9x^2 - x^6 + 4x^8 2. Describe the end behavior of a ninth-degree polynomial function with a negative leading

    asked by Stephanie
  71. Science: Astronomy

    How many 0.75 -M main sequence stars would it take to equal the luminosity of one 15 -M star?

    asked by Katrell
  72. Chemistry

    If the light travel 3.0 times 10 to the power of 8 meters/secs. How long it will take in miles/hr

    asked by Laura
  73. accounting

    I am showing a $8100 debit balance on prepaid insurance at the end of august. The pre-paid insurance was purchased in Feb. for 12 months. what should my adjusting entry to pre-paid insurance be for the month of Sept. which is the end of my fiscal year?

    asked by lynn
  74. algebra II

    Leona was in a golf tournament last week. All of her four rounds of golf were within 2 strokes of par. If par was 72, wat are the maximum and minimum scores that Leona could have made in the golf tournament?

    asked by Jenny
  75. math

    What is a function, in your own words?

    asked by kim
  76. Math (Algebra)

    Is (xy)^3 the same as xy^3? Explain why or why not.

    asked by Lynn
  77. Chemistry

    This question is very confusing, I do not understand what it wants me to do. Each reaction below has been identified by type. Use this information to help predict products. Copy and then complete each equation by writing the products of the reactions.

    asked by Derrick
  78. math..probabilities

    A weighted coin has the property that the Heads comes up 60 percent of the time. On two flips of the coin, is it more likely that the outcomes from the two flips are the same, or the outcomes from the two flips are different? The same outcome is more

    asked by M.A.
  79. Website

    is pathwelp a free website?

    asked by Anonymous
  80. psychology

    I hope you can help me. I am working on my final and need to know what exactly is "Evaluate the list above (not giving the list but doing on stress)for areas of need not already addressed. Recommend a fifth job title and assign other health

    asked by Terri
  81. Math

    A weighted coin has the property that the Heads comes up 60 percent of the time. On two flips of the coin, is it more likely that the outcomes from the two flips are the same, or the outcomes from the two flips are different?

    asked by William
  82. Algebra

    Area of a triangle. Find the exact area of a triangle with a base of sqrt 30 meters and a height of sqrt of 6 meters. Thank-you

    asked by jonie
  83. algebra

    Time to swing. The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2=n ^2 L. If a child is on a swing with a 10 foot chain, then how long does it take to complete

    asked by paul
  84. Math

    Hi,I need to know how to do question like this without using a calculator. Can anyone help please. Which of the following is closest to square root of 4000 A)40 B) 60 C) 200 D) 2000 I know the answer is B , but I did it on the calculator. Can someone show

    asked by Mike
  85. Chem

    How many moles of water can be obtained from 19.7 g of CoCl2·6H2O?

    asked by B
  86. math

    solve for X ? 1) 8-3x < 14 -3x/-3 < 6/-3 x=-2 2) 7x -3 > 4x +3 3x -3> 3 3x/3 >6/3 x>2 3) x-5 -8 x-4 4) x+ 7 30 x 6 are they correct..

    asked by Jetta
  87. Trigonometric Functions

    Given that 0 < or = x < 2pi, solve each of the following equations in radians. sin2x=square root of 3 over 2

    asked by KumonUnhappyFace
  88. DrBob222

    DrBob222 I am kind of stuck with the balancing stuff, and I already had send the post, did you not read it?

    asked by Derrick
  89. math116 appendix e

    4. The line represents an estimate of the average cost of gasoline each year. The line estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular?

    asked by sandy
  90. math 116 appendix e

    4. The line y=0.15x +0.79 represents an estimate of the average cost of gasoline each year. The line 0.11x-y=0.85 estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting,

    asked by sandy
  91. DrBob222

    These are the other equations I've balanced. I need help with one. AgNO3 + K2Cr2O7 --> double replacement AgNO3 + K2Cr2O7 --> AgCr2O7 + K2NO3 Please tell me if I've balanced these right. Br2 + NiI3 --> single replacement, element is a non-metal Br2 + NiI3

    asked by Derrick
  92. Health Care Ins

    How participation contracts represent financial opportunities for providers. What are positive and negative ramifications of discounted fee-for-service arrangements

    asked by rennie
  93. Finance

    14.You need to have $15,000 in five years to pay off a home equity loan. You can invest in an account that pays 5.75 percent compounded quarterly. How much will you have to invest today to attain your target in five years?

    asked by G
  94. college

    15.Pedro Martinez wants to invest $25,000 in a spa that his sister is starting. He will triple his investment in six years. What is the rate of return that Pedro is being promised

    asked by G