Questions Asked on
June 8, 2012

  1. Math

    a light shines from the top of a pole 50ft high. a ball is dropped from the same height from a point 30 ft away from the light. how fast is the ball's shadow moving along the ground 1/2 sec later? (assume the ball falls at a distance of s=16t^2 in t sec)

    asked by Teri
  2. Physics(Please check)

    A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 404 N walk on the overhanging part of the plank before

    asked by Hannah
  3. chemistry

    In one process of 5.75 kg of CaF2 are treated with an excess of H2SO4 and yield 2.85 kg of Hf calculate the percent yield of hf?

    asked by April
  4. Math

    a man 6ft tall walks at the rate of 5ft/sec toward a streetlight that is 16ft above the ground. At what rate is the length of his shadow changing when he is 10ft from the base of the light?

    asked by Teri
  5. Physics Please Help ASAP

    Identify the unknown particles X and X' in the following nuclear reactions. (In parts (a) and (b), enter only the missing product or reactant.) A) X + 4over2 HE -> 24over12 Mg+1over0 n B) 235over92U+1over0 n -> 90over38Sr+X+2and 1over0 n

    asked by Ashley
  6. math

    A superball is dropped from a height of 2 m and bounces 90% of its original height on each bounce. (a) When it hits the ground for the eighth time, how far has it traveled? (b) How high off the floor is the ball on the eighth bounce?

    asked by Angie
  7. Chemistry

    Consider the following unbalanced equation. H1+(aq) + Fe(s) H2(g) + Fe2+(aq) What is the balanced oxidation half-reaction? What is the balanced reduction half-reaction? What is the balanced overall cell reaction?

    asked by Mel
  8. physics need help plz

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar
  9. Economics

    1. Why is a high level of subsistence agriculture a characteristic of less developed countries? B. It shows that the country uses less energy. C. It means that more people are unemployed or underemployed. D. It means that there are fewer workers available

    asked by Anonymous
  10. Chemistry

    Distinguish between an absorption spectrum and an emission spectrum.with which did bohr work?

    asked by Yeneta
  11. math

    The legs of a right triangle are 3 and 4 units long. Find the lengths, to the nearest tenth, of the segments into which the bisector of the right angle divides the hypotenuse. (Hint: Draw a picture of the triangle, label one segment of the hypotenuse "x,"

    asked by molly
  12. Physical Geography SOMEONE PLEASE HELP!

    Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain. The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000’ and the SAR

    asked by Sandra
  13. Chemistry

    An electron in the n=5 level of an H atom emit a photon of wavelength 1281nm. To what energy level does the electron move? Thanks for ur help.

    asked by Yeneta
  14. U.S. GOVERNMENT

    1)A government where the executive of the nation comes directly from the legislature is known as a parliamentary government, meaning the legislature decides who the nation's top executive is (although there is often a separate ceremonial head of state).

    asked by Booker Perry
  15. Calculus

    From each corner of a square piece of cardboard, remove a square of sides 3 inch. Turn up the edges to form an open box. If the box is to hold 300 inch cubed, what are the dimensions of the original piece of cardboard?

    asked by HELP ME PLEASE!
  16. Art

    What is the mood of the sculpture, Discobolus? Hes an athlete, and I don't know how to describe it.. I want to say, concentrated, but I don't think that's a mood.

    asked by Anonymous
  17. physics

    How many grams of carbohydrate does a person of mass 75 kg need to metabolize to climb five flights of stairs (15 m height increase)? Each gram of carbohydrate provides 17.6 kJ of energy. Assume 10.0% efficiency—that is, 10.0% of the available chemical

    asked by Nasir
  18. Personal Finance

    What would be the APR on $1200.00 if the total interest paid was 75.00 for 36 months. The bank charge a service charge of 12.00 for the loan.

    asked by Sheri Zinnel
  19. medu

    RM 2000 was invested on 15march 2012. If the simple interest rate offered was 10% per annum, find the interest received on 29 August 2012 using A. Exact time and exact simple interest B. Exact time and ordinary simple interest C. Approximate time and exact

    asked by mariam
  20. physics

    A 90Kg box is pushed by a horizontal force F at constant speed up a ramp incined at 28 degrees. Determine the magnitude of applied force when the ramp is frictionless and when the coefficient of kinetic friction is 0.18

    asked by Rose
  21. English

    There are two ways of learning in terms of the mathod; one is a serious formal way, and the other is an entertaining enjoyable way. Both ways have merits and demerits. To a low-level students, an entertaining enjoyable way seems to be much better than a

    asked by rfvv
  22. Chem

    The value of ƒ¢H‹ for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO(g) reacts completely. 2CO(g) + O2(g) ¨ 2CO2(g) *I just want to how to solve this problem as in an equation, not the answer.

    asked by Harlem
  23. U.S. GOVERNMENT

    1)The Greeks openly accepted all groups of people into their "total democracy. 2)The Greeks were the first to refer to one of their democratic bodies as a "Senate. 3) From the Middle Ages, people further developed the democratic ideal of equality along

    asked by Booker Perry
  24. chemistry

    When you add 100ml of a 0.1M HCl solution to 200 ml of 0.4M NaOH solution what is the pH? can you please show detailed work. o don't understand this

    asked by jen
  25. Geography

    By the early 2000s which country was Taiwan's third largest trading partner?(China),(South Korea). ( U.S.),(Japan)

    asked by Blake
  26. Physics

    (a) If the length of the Achilles tendon increases 0.55 cm when the force exerted on it by the muscle increases from 2200 N to 6000 N, what is the "spring constant" of the tendon? N/m (b) How much work is done by the muscle in stretching the tendon 0.55 cm

    asked by Adam
  27. Art

    I need to interpret the meaning, mood, or idea communicated from the painting, The Second Chinese Horse by Lascaux. Help please.

    asked by Anonymous
  28. geometry

    My Flower Basket delivers flowers within a 25 mile radius of their store. If this area is represented graphically, with My Flower Basket located at (4, 3), what is the equation that represents the delivery area?

    asked by Anonymous
  29. Pharmacology

    You provide the manufacturer’s recommended dose of an antibiotic, which is 10mg/kg IV for a 100kg patient. You then draw a level 30 minutes after the dose. Assume rapid distribution and neglible clearance/metabolism over the 30minute period between the

    asked by Amy
  30. math

    A 4'' diameter round pizza with area As and a 12'' diameter round pizza with area Ab. What is the ratio Ab/As? How many times bigger is the larger pizza?

    asked by Joseph
  31. Math

    Reading readiness of preschoolers from an impoverished neighborhood (=20) was measured using a standardized test. Nationally, the mean on thios test for preschoolers is 30.9, with SD = 2.08. a. children below the 30th percentile (in the bottom 30%) are in

    asked by Norvin
  32. understanding hospital billing

    I need 2 CPT codes for this question. I think I have one of them figured out. 16020. I am new at this, and any help would be appreciated. Patient presents to the Emergency Department with a severe burn on the left upper arm. Level I E/M reveals a

    asked by Terry Davis
  33. English

    1. Who is Aibo? 2. He is a robot dog. 3. It is a robot dog. 4. What is Aibo? 5. He is a robot dog. 6. It is a robot dog. (Are the questions and answers all correct? If the robot has a female voice, can we say " She is a robot dog?")

    asked by rfvv
  34. Intermediate Algebra

    A gardner wants to create a triangular garden in the shape of a right triangle with shaortest side length x-8y ft and the middle length side x+6y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in

    asked by ladybug
  35. maths

    1) if x+1/x=2,then x^2012+1/x^2012=? 2)if A>B>C>D,find the digits A,B,C,D (which are from1 to 9), so that ABCD-DCBA=BDAC. 3)solve:px-qy=r and rx-py=q.

    asked by sagar
  36. Chemistry

    A 0.05 N solution of a salt occupying a volume between two platinum electrodes seprated by a distance of 1.72 cm an having an area of 4.5 cm2 has a resistance of 250 ohm. calculate equivalent conductance of a solution

    asked by Robin Singh Hayer
  37. Physics(Please respond)

    Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x10-8m, and a tangential speed at the rim of 2.7x10-5 m/s. (a) What is the angular speed (the magnitude

    asked by Hannah
  38. PHYSICS

    A CAR ACCELERATES TO 36M/S FOR 4 SECS BEFORE DECELERATING TO 32M/S FOR THE NEXT 6 SECS. CALCULATE THE DISTANCE PLEASE PLEASE HELP

    asked by fahd
  39. stats

    USA snapshot presented a bar graph depicting business travelers’ impression of wait times in airport security lines over the past 12 months. Statistics were derived from Travel Industry Association of American Business Traveler Survey of 2034

    asked by baby
  40. write

    my question is what obstacles do i have to overcome to succeed?

    asked by mai
  41. Physics :)

    John and Joan walk in opposite directions around a circular path, starting from the same point. The path has a radius of 50.0 meters. John walks at 1.00 m/s, Joan at 1.25 m/s. How long will it take for them to meet? Can someone please explain this to me?!

    asked by Christina
  42. Intermediate Algebra

    A school designer wants to create a whiteboard with the optional dimensions to enhance learning. It is determinedd that if one side of the whiteboard is x+2y inches theother side should be x^2+6xy-5y^2 inches. Write an algebraic expression for the area of

    asked by ladybug
  43. Calculus

    Spud McTator climbs his sailboat's mast while anchored. He fires his potato gun. The height of the potato above the ocean is given by: h=0.002X*2+2X=22. Where X is the horizontal distance from the keel of the boat. How far from the keel is the height of

    asked by help :)
  44. physics

    x=x0+v0t+1/2at^2. Assuming that x0=0, a=2, and x=h, solve for t in terms of initial v and h? x0 mean initial value of x same with v0

    asked by Joseph
  45. algebra

    radicals multiply and simplify by factoring ____ ______ ^3|y^7* ^3|16y^8 unsure how to do root square sign.

    asked by Randy
  46. maths

    a number which is less than or equal to 150 but if counted in pairs, one will remain if counted in threes, two will remain if counted in fours, three will remain if counted in fives, four will remain if counted in sixes, five will remain if counted in

    asked by kala
  47. resumes

    do you guys know of any good FREE resume building sites?

    asked by Blaze
  48. Business Law

    As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation,

    asked by Marcal
  49. Exercise

    What exercises could you still do at 50 years old? Are you working out now? What are you able to do? What about at 70 years old? How are you going to handle injuries? What are preventative measures that you could take? Remember: You must post your own

    asked by Andy
  50. Education

    A classroom test that measures appropriate knowledge and/or skills is likely to be reliable because of the strong link between validity and reliability. A. Advanced vocabulary B. Double-concept item

    asked by zz
  51. child care

    in aquiring equipment for a child care facility, you'll most likely

    asked by shajuan
  52. math

    need help with 20 question for algebra and trigonometry

    asked by Anonymous
  53. physics

    Why can a Frisbee (or an aerobie) be thrown so much further than a ball? Comment on the applicability of above for throwing a Frisbee or an aerobie on the Moon

    asked by xue
  54. algebra

    Suppose the modified quota is 3.27 Fill in the blanks, and round your answers to two decimal places. (a) Find the lower quota. (b) Find the upper quota. (c) Find the arithmetic mean of the lower and upper quotas. (d) Find the geometric mean of the lower

    asked by pam
  55. Intermediate Algebra

    The area of a rectangular swimming pool is given by 4x^2+19x+12 ft one side length f the pool is given by 4x+3 feet. What is an algebraic expression for the other side of lenght of pool? Simpily this, and include correct units as part of your answer.

    asked by ladybug
  56. Pharmacology

    dose is 10mg/kg IV for a 100kg patient. level drawn at level 30 minutes after the dose. The serum level of this antibiotic returns at 83.3mg/L. What is the volume of distribution of the drug? The goal therapeutic serum level of a is 120 mg/L. How much more

    asked by Amy
  57. Management

    Critical thinking is very important in making decisions that impact an organization’s growth and survival. Which of the following traits of a critical thinker is essential in this process?

    asked by Samantha
  58. Art

    Ms. Sue, I urgently need you to check this email. Thank you 1) I suppose you received the remaining balance because my bank has already taken the money from my bank account. 2) However, I would be grateful to if you let me know about that all the same. 3)

    asked by Mike
  59. c0llege math

    perform the indicated operations give answer in scientific notation (5x10 to second power) x (5.6 x 10 to the fourth power)

    asked by Lourane
  60. c0llege math

    solve 2.3=_-4 2

    asked by Lourane
  61. c0llege math

    solve 2-x=11(x-1) would the correct answer be x=___9 11

    asked by Lourane
  62. precal

    4=2cos(pi/6t-2pi/3)+4 How do i solve this step by step ith justification for each step? super frustratd thankyou

    asked by wendell
  63. Chemistry

    In what ways are microwave and ultraviolet radiation the same? In what ways are they different?

    asked by Yeneta
  64. Education

    Having undertaken a variety of proactive steps to forestall the inclusion of items that might, due to an item's content, have an unwarrantedly adverse impact on students because of any student's personal characteristics, the test-developers then, based on

    asked by bj
  65. Math or geometry

    7c-4x+45

    asked by Diana
  66. English

    what do impulsive mean?

    asked by Mohammad
  67. algebra

    I answered some of the questions but i need help with number 7, 8, and 10. Here is an example of the assignment. I am the current secretary of a horse rescue, in charge of fund raising as well as organization and meeting minutes. We have decided to

    asked by sharon
  68. Chemistry

    What is the difference between a heating curve and a saturation curve? Can I get an example of a saturation curve too please

    asked by Anonymous
  69. science

    which if the following stars is brightest Nova, white dwarf, red giant, or main sequence

    asked by tia
  70. physics

    Consider the equation -mv0 +3mv0 = 4mvf. Where m and v0 are constants, Solve for vf. Simplify answer.

    asked by Joseph
  71. maths

    a boy was employed on the understanding that he was to receive 'p' paise for everyday he worked and 'q' paise for everyday when there was no work for him. after 'd' days his earnings amounted to Rs.'x'.how many days had he worked?

    asked by sagar
  72. medical

    purpose of an organization chart and what it accomplishes for healthcare organization?

    asked by Juanita
  73. Maths

    What is the square root of:- a)6889 b)1681

    asked by joshua
  74. c0llege math

    solve x-2.1=-7.5 would the correct answer be -5.4

    asked by Lourane
  75. physics

    distance = velocity x time 36m/s x4 =144/2 = 72 d=vt 32 x 6 = 192 distance - 72M + 192M = 264M

    asked by fahd
  76. question

    whats that thing called that horses have on their face? it looks like a rope or string of some sort

    asked by Anonymous
  77. Basic Biomechanics

    A car teeters on the edge of a cliff. A eagle weighing 55 N lands on the hood 1.1 M from the edge of the cliff which functions as an axis. At the same time, an owl weighting 44 N lands on the trunk 1.5 m from the axis. What are the torques exerted by the

    asked by Joshua Mclaurin
  78. geometry

    A community 5K run will award $ 50 to the winner. 40 people enter the race,and they each pay an entry fee of $20. Assuming thay are all equally likely to win, what is a fair price for the competition? Round to the nearest cent.

    asked by angela
  79. maths and statistics

    A company manufactures a product. The total fixed costs are $75 and the variab cost per unity is $5. 1)find an expression for the total cost in terms of Q,the quantity produced

    asked by kim
  80. question

    Is hellenistic a prehistoric culture?

    asked by Anonymous
  81. art

    who is the artist of the sculptures the dying gaul, and the seated boxer?

    asked by Anonymous
  82. child care

    do anyone have the answers to exam 00305200

    asked by shajuan