Questions Asked on
October 22, 2017

  1. Physics

    An anti-hydrogen atom is made using an antiproton and a positron. The spectral lines corresponding to the energy transitions of the positron are then measured. Which of the following statements, if any, are true? A) The measured spectral lines will all be

    asked by Kid
  2. Math

    A solid body consists of a cylinder surmounted by a hemisphere of the same radius. The total length of the body, measured along the central axis of cylinder, is 10cm. If the radius of the hemisphere is xcm,show that the volume vcm^3, of the solid body is

    asked by Prince
  3. Projectile motion

    So I want to find the speed an object hits the ground. I have the initial speed 45ms, the angle 50degrees and its time in flight 6.7s. So the final speed before impact should be: (45ms)sin(50)-9.81(6.7)=-31.25...ms Does this seem correct. In my head I was

    asked by Anon
  4. Maths

    The difference of two numbers is 5600.the smaller number is 34500.what is the bigger number

    asked by Hammaad
  5. Math

    When is the sum of two integers greater than the difference?

    asked by Vem
  6. core mathematics

    The first term of an AP is-8. The ratio of the 7th term to the 9th term is 5:8. Calculate the common difference of the progression.

    asked by Anonymous
  7. math

    It takes one machine 25 minutes to pick a bale of cotton and another machine 30 minutes to compete the same job. If both machines are used, how long will it take them to pick a bale of cotton?

    asked by Ashley
  8. English

    Solve as many as you can 1 pure honey goes with a French wine, Boast about this , then, that’s just fine! 2 a nation here we now may learn, for something they must long or yearn. 3 a musical instrument, now, that’s right, then add a grin, or ray of

    asked by Reece
  9. Maths

    The dimension of picture are 30*20cm.what length of wooden frame is needed to frame the fence it, what is the length of the wire needed?

    asked by Aishwarya
  10. Iraq

    What were some of the problems that Sir Percy Cox encountered in Iraq after centuries of Ottoman rule

    asked by Arazonia
  11. Physics :(

    A standard dorm bedroom at most colleges is 10 ft. wide by 15 ft. long. A bag of regular M&Ms has approximately 200 candies inside of it and usually costs around 67 cents. How much money would it cost to completely fill a dorm bedroom with regular M&Ms? a)

    asked by Anonymous
  12. Theory of Computing

    Prove the following identities in a Kleene algebra. a) (a + bb + ba(b + aa)* ab)* = (a + b(ab*a)* b)* b) a* + a*b(ba*b +ab*a)* ba* = (a + b(ab*a)* b)*

    asked by Winston
  13. Physics

    What is the power of engine that pulls a 1000 kg automobile at a steady speed of 10 m/sec along a level road?

    asked by Anonymous
  14. Physics

    (a) A hotdog vendor named Sam is walking from the southwest corner of Central park to the Empire State Building. He starts at the intersection of 59th Street and Eighth Avenue, walks 3 blocks east to 59th Street and Fifth Avenue, and then 25 blocks south

    asked by Destiny
  15. Algebra

    The heights of four of the starting players on the basketball team are 183 cm, 178 cm, 174 cm, and 185 cm. If the mean height of all five starting player is 182 cm, what is the height of the fifth starting player?

    asked by Samay
  16. Math

    Old Macdonald planted 60 acres of corn worth $11,700. If each acre yields 65 bushels of corn, what is the value of one bushel?

    asked by Samay
  17. Algebra

    Is the product of an odd and an even numbers odd or even?

    asked by Samay
  18. rMath

    This is a two part question, make sure you answer both parts: Flo Tilla is pedal boating on Lake Azui. She starts back toward the dock, which is 1000 yards away. She goes at a rate of 25 yards a minute toward the dock. How far is Flo from the dock after 5

    asked by Samay
  19. Algebra

    This is a two part question, make sure you answer both parts: In the following subtraction problem the letters A, B and C stand for three different digits ( There are not any other operations involved in this problem). What digits should replace each

    asked by Joe
  20. Maths

    A guitarist earns a royalty of 22% of the selling price of a CD. If he earns $2.64 on each CD sold, what is the selling price of the CD?

    asked by Brandon
  21. math

    Rachelle and Kayla want to rent a boat while they are at Lake Azul. Floatmore Boats charges $5.00 for insurance and $5.25 an hour. Neversink charges $6.75 an hour. You have to pay the insurance fee to rent at Floatmore and a rental for any part of the hour

    asked by Samay
  22. math

    if 9m+57=87 then 9(m+6)=?

    asked by Louise
  23. Math, algebra

    in a two by 3 grid, each lattice point is one unit from its nearest neighbours. a total of 14 isosceles triangles( but not right triangles), each with an area of 1\2 u2 have only two vertices that are one unit apart in the grid. how many such half unit

    asked by John
  24. math

    In a class of 32 students, all the students study Spanish(S) and 20 of the students study French(F).Calculate the number of students who study Spanish(S) but not French(F).

    asked by sydney
  25. physics

    A closed inexpansible vessel contains air saturated with water vapour at 77 degree Celsius.The total pressure in the vessel is 1007mmHg.Calculate the new pressure if the temperature is reduced at 27 degree Celsius (S.V.P of water at 77degree celcius and 27

    asked by ada
  26. Science

    What is the function of a cell wall? 1.to protect and sopport the cell****** 2.To perform different functions I’m each cell 3.To prevent water from passing through the cel 4.to prevent oxygen from entering the cell

    asked by Annie:~)
  27. Algebra 2

    Can someone see if I got these correct? 1. Solve log5 x = 3. x = 125 2. log3 (x - 4) > 2. x > 13 3. Evaluate log7 49. log7 49 = 2 4. Solve log3 x = 4. x = 81 5. The graph of a logarithmic function y = 3^x is a reflection of x = 3^y over the line y = 0.

    asked by Nikki
  28. Math

    In a class of 32 students study Spanish(S) and 20 of the students study French(F).Calculate the number of students who study Spanish(S) but not French(F).

    asked by sydney
  29. Math (Pre- Algebra) A

    Write a translation rule that maps point D(7, -3) onto point D'(2, 5).

    asked by Help Plz! Lesson 11 Unit 4 Test
  30. Chemistry

    Calculate the rate constant at 200.°C for a reaction that has a rate constant of 9.20 × 10−4 s−1 at 90.°C and an activation energy of 59.7 kJ/mol.

    asked by Jordan
  31. Physics

    A light, ideal spring with a spring constant k = 100 N/m and uncompressed length L = 0.30 m is mounted to the fixed end of a frictionless plane inclined at an angle θ = 30.0° as shown above. Then a mass M 0.300 kg is affixed to the end of the spring and

    asked by Jonah
  32. Algebra

    Norman and Suzanne own 42 shares of a fast food restaurant stock and 66 shares of a toy company stock. At the close of the markets on a particular day in​ 2004, their stock portfolio consisting of these two stocks was worth ​$1944.00. The closing price

    asked by Shaun
  33. Math, word problem

    Lee walked for 20 minutes on a motorized treadmill that was set at a constant speed of 4 miles per hour. About how many miles did Lee walk on the treadmill? A. Between 1/2 and 1 B. Between 1 and 1 1/2 C. Between 1 1/2 and 2 D. Between 2 and 2 1/2 E. More

    asked by Lacey
  34. Physics

    What is the average kinetic energy of nitrogen molecule at 20°C

    asked by Buma
  35. math

    Data​ (x,y) for the total number​ (in thousands) of​ college-bound students who took a test in the year x are approximately ​(11,1177), ​(8,1493​), and ​(11​,1664), where x=1 represents 2001 and x=8 represents 2008. Find the values​ a, b,

    asked by lea
  36. Physics

    There is gas in a gas container. A valve on the container will be opened and a quarter of the gas quantity will be released to the outer range. Due to this process the temperature of the gas will be decreased by 20%. What is the decrease of the gas

    asked by Buma
  37. college algebra

    List the x value of each real zero and its multiplicity. List them in increasing order. If a listed zero does not exist, enter DNE in both fields.

    asked by Riley
  38. geography

    triangle one side is 5 feet one side is 1 foot 1 corner has 90 degrees. how many degrees do the other corners have and how long is the other side?

    asked by hildchen
  39. physics

    Explain the term uniform acceleration and average speed

    asked by Maxwell
  40. Social Studies

    After identifying the problem, which of the following is the next step an engineer usually takes A. Explore what other people have done about the problem B. Build a prototype to solve the problem C. Identify related problems D. Communicate the results of

    asked by kyle
  41. physics

    A stone is tied to a string is made to revolve in a horizontal circle of radius 4m with an angular speed of 2 radian per seconds with what tangential velocity will the stone move off the circle if the string cuts

    asked by martins
  42. cell biology

    How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was at the end of G2 of the cell cycle? a. The daughter cells have half the numbers of chromosomes and half the amount of DNA. b. The daughter cells have

    asked by Anonymous
  43. physics

    A stone is attached to the end of an elastic string and whirled round in a circle path of radius 80cm if the stone makes 9 complete revolution in 3 seconds .find its angular and linear velocities during this period

    asked by martins
  44. Physics

    A 20N block rests on a table, connected by a massless rope to a 12N block hanging off the table. Assume the pulley is light and frictionless. What is the tension in the rope? ______________________________________ I calculated the masses to be 2.04kg and

    asked by Kallian
  45. Math

    I have a rectangle shaped garden with the longer side measuring 14 m and the smaller side measuring 10m. I want to put brick path around the outside with bricks that are 50cm wide. How many bricks will i need?

    asked by Rclapham
  46. World History

    Why were the Russians more inspired by the Greek Orthodox Church than the Roman Catholic Church They found Orthodox worship to be beautiful and mysterious and the Catholic Church too austere and plain. They didn’t like the Pope’s approach to

    asked by Tragic_Roses
  47. Math

    A dress cost twice as much as a skirt. Mrs. Mason bought 3 dresses and 2 skirts. She gave the cashier $1000 and received $300 in change. How much did a dress cost?

    asked by sam
  48. science

    Why are the oldest rocks on earth on continental crusts?

    asked by jen
  49. math

    The distance between two piers is S miles. Two boats started moving simultaneously at speeds R1 and R2. How can you find the distance D between them if they moved for T hours towards each other from the two piers

    asked by EinsteinSmartsBrain
  50. computer programming

    What does JS HTML CSS stand for????????????????????????????

    asked by EinsteinUnSmartBrain
  51. Maths

    |x+5|+9>10 solve for x

    asked by Amilia
  52. Math

    Let's say I had a graph for some experiment that we thought was modelled by a = bcd + g. If we perform an experiment and plot a vs. c, what do we expect the slope and intercept to be? Would intercept = g and slope = b ? If that's right, what would d

    asked by Brad
  53. Chem

    How many grams of a 28.0% (m/m) CuSO4 solution contain 39.0 g CuSO4?

    asked by Nikki
  54. Physics

    A -A child rides a toboggan down a hill that descends at anangle of21.8◦ to thehorizontal. The hill is 42.6 m long. What is the horizontal component of the child’s displacement? Answer in units of m. B - What is the vertical component of the child’s

    asked by Anna
  55. Physics

    A quarterback takes the ball from the line of scrimmage, runs backward for 19.0 yards, then runs sideways parallel to the line of scrimmage for 12.0 yards. At this point, he throws a 43.0-yard forward pass straight down the field. What is the magnitude of

    asked by Anna
  56. Physics

    A - A boy runs 12.7 blocks North, 7.5 blocks Northeast, and 14.4 blocks West. Determine the length of the displacement vector that goes from the starting point to his final position. B - Determine the direction of the displacement vector. Use

    asked by Anna
  57. Physics

    A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 5.5 m to the north, 5.3 m 45◦ north of east, and 8.6 m 13◦ west of south. Starting at the same initial point, an expert (lucky) golfer could make the

    asked by Isabelle
  58. Physics

    Tammy leaves the office, drives 51 km due north, then turns onto a second highway and continues in a direction of 31◦ north of east for 82 km. What is her total displacement from the office? Answer in units of km. At what angle is her displacement?

    asked by Isabelle
  59. nait

    what is the surface area of a cylinder with a diameter of 4cm and height of 6 cm? include the areas of the ends

    asked by Anonymous
  60. Chemistry

    What is the frequency in hertz of a photon of light with an energy of 3.93 x 10-21J? What is the frequency of light in hertz with a wavelength of 4.12 x 10-7m?

    asked by milo
  61. calculus 1

    Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = 4x3 + x2 + 4x

    asked by John
  62. Physics

    A - A girl delivering newspapers covers her route by traveling 4 blocks west, 2 blocks north, then 6 blocks east. What is her resultant displacement? Answer in units of blocks. B - What is her direction? Use counterclockwise as the positive angular

    asked by Lyndsay
  63. English

    They lawyers advised (the client) to stay silent while in court. What is the client? A:Direct Object B:Indirect Object*** C:Predicate Nominative D:Predicate Adjective Is this correct?

    asked by marylyn
  64. chem delta s

    if delta s is high which means positive high entropy, then when a drug binds to a protein why is it negative delta s?

    asked by suz
  65. Algebra HELP

    What are the real and imaginary parts of the complex number: -6-i?

    asked by Hannah
  66. statistic

    In a survey, 3 of 4 students said the courts show "too much concern" for criminals. Find the probability that at most 3 out of 7 randomly selected students will agree with this statement. Round your answer to the nearest thousandth.

    asked by miyah
  67. Project Mnagment

    Describe the purposes and differences between qualitative and quantitative risk analysis.

    asked by Rami
  68. English

    1. A clever animal is made use of by people. 2. The clever animal is made use of by people. 3. Clever animals are made use of by people. ----------------------------------- Thank you for your help. I made three sentences using the sturctures A + noun, The

    asked by rfvv
  69. US Government

    I just have some questions i'd like to know for the future if anyone can help? *why do vice presidents have more responsiblity now than before *What does the 25th amendment have to do with change?

    asked by Jason
  70. Language Arts

    write an essay in which you analyze the importance of plot event and characters actions to the development of the story theme. Note that your essay should focus on the theme first and discuss plot and characters in relation to that theme. Review and

    asked by aye
  71. LAnguage Arts

    Write an essay in which you analyze the importance of plot events and characters’ actions to the development of a story’s theme. Review and evaluate a story from the unit that has a clearly identifiable theme. You might choose “Raymond’s Run” by

    asked by aye
  72. maths

    The given figure shows a rectangle inscribed in an isosceles right triangle whose hypotenuse is10 units long. Express the​ y-coordinate of P in terms of x.​ (Hint: Write an equation for the line​ AB.)

    asked by Anonymous
  73. Physics

    Two satellites S1 and S2 orbit around a planet P in circular orbits of radii r1 = 5.25 106 m, and r2 = 8.60 106 m respectively. If the speed of the first satellite S1 is 1.65 104 m/s, what is the speed of the second satellite S2? m/s

    asked by Young
  74. Physics

    Mary and her younger brother Alex decide to ride the carousel at the State Fair. Mary sits on one of the horses in the outer section at a distance of 2.0 m from the center. Alex decides to play it safe and chooses to sit in the inner section at a distance

    asked by Young
  75. World History

    Which accurately describes European feudalist society? In the feudal system, approximately 90 percent of people were peasants, and most were practicing Catholics. In the feudal system, approximately 60 percent of people were clergy, and most were

    asked by Erick