Popular questions and responses by Elaine
  1. physics

    A 20kg traffic light hangs midway on a cable between two poles 40meters apart. If the sag in the cable is .4 meters, what is the tension in each side of the cable?

    asked on October 19, 2008
  2. physics

    A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial velocity such that two stones hit the ground at the same time. find a. time taken for the first stone to fall 75m. (b) the time

    asked on October 19, 2010
  3. english

    Some people are so ____ living near a nuclear plant that they want the plant's license to be ___. They say the plant threatens ever homeowner's right to safety.

    asked on February 24, 2013
  4. Finance

    5.3 The manager of a large computer network has developed the following probability distribution of the number of interruptions per day: Interruptions (X) P1X2 0 0.32 1 0.35 2 0.18 3 0.08 4 0.04 5 0.02 6 0.01 a. Compute the expected number of interruptions

    asked on November 27, 2012
  5. algebra

    One day the temperature dropped from 4 degrees F to -15 dgrees f. How many degrees did it drop?

    asked on December 22, 2009
  6. Calculus

    If x=2sec (theta), express tan(theta) in terms of x.

    asked on February 23, 2012
  7. 3rd grade art

    In the painting "Sunday Afternoon on the Island of La Grande Jatte", by George Seurat, what is the story the painting is telling? What is happening?

    asked on March 31, 2009

    A proton is confined to a nucleus whose diameter is 5.5*10^-15m. If this distance is considered to be the uncertainty in the position of the proton, what is the minimum uncertainty in its momentum? I don't really get the uncertainty concept, and how can I

    asked on April 29, 2008

    1. Some regular churchgoers believe that taxpayers' dollars should not be used to fund laboratories that carry out tests on animals for medical research. Hence, it is wrong to go on spending taxpayers' dollars for that purpose. Answer: False Cause 2. Yogi

    asked on September 26, 2017
  10. Physics 30

    Two point charges objects produce an electric force on each other of 3.6x10^-2 N. What is the electric force between them if the distance is increased five times?

    asked on February 6, 2016
  11. English

    Change the italicized clause to nominative absolute. As the game was over the contestants quietly filed out of the room

    asked on January 18, 2016
  12. Teacher Aide

    If you're preparing a bulletin board,how many ideas should you try to get across at one time?

    asked on October 28, 2014
  13. math

    Find the z-score such that the area under the standard normal curve to the left is 0.82. ______ is the z-score such that the area under the curve to the left is 0.82. (round 2 decimal places as need)

    asked on December 3, 2013
  14. Chemistry

    a 25.0 mL sample of .050 M solution of aqueous trimethylamine is titrated with a .063 M solution of HCl. calculate pH the solution after 10.0 mL, 20.0 mL, 30.0 mL of acid have been added. pKb of (CH3)_3_N= 4.19 at 25 degrees C

    asked on November 11, 2012
  15. Calculus

    I have to use integration by parts to integrate tan^-1 (1/x)dx. I'm not sure what to use as u or dv. We were taught to use uv-integral of (vdu) to do this.

    asked on February 15, 2012
  16. math

    (6x-5y)^2= 36x-25y 6x-5y (4x+5y)^2 16x+25y 4x+5y Please check to see if right. If not corrected for me.

    asked on June 2, 2010
  17. Alegebra

    Use the intercepts to graph the equation. 4x-12=3y It should be pair. is the answer (4,3)

    asked on March 6, 2009
  18. Math

    Simplify (13 x+ 10y) +(6x -7y) +5x= 13 x +6x +5x +10y -7y 24 x +10y -7y 24 x+3y check this

    asked on November 18, 2019
  19. Math

    7^2 +3[81-(4 6)] Help me 49+243-24=243-24=219 219+49=263 Is this right

    asked on August 21, 2019
  20. Math

    The front door of a house is 80 inches tall. What is the volume of the door? Top is 2 in. the length is 36 in. What is the volume of the door? A bedroom door in the house has the same dimensions as the front door, but the length is 30 inches rather than 36

    asked on April 14, 2018
  21. Physic

    A force of 7000N is applied to drag a 500 kg cow across a flat level floor to McSlaughter House. The cow has an acceleration of 2.5 m/s2. (a) what's the weight of the cow? (b) what is the normal force acting on the cow? (c) What is the resultant force that

    asked on March 3, 2017
  22. Physics

    A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the

    asked on March 2, 2014
  23. Chemistry

    Calculate the density of 150g of a 25% by wieght solution of sodium chloride dissolved in water and the volume of solution is 145ml.

    asked on January 24, 2012
  24. Confidentiality of Health Information


    asked on July 14, 2011
  25. health care ECONOMICS

    How did the Haiti disaster affect healthcare costs in the United States in the short run

    asked on May 6, 2011
  26. role of and health care/nursing role

    in health care what trends do you anticipate influencing curriculum content and structure in the next decade?

    asked on April 6, 2011
  27. Language Arts

    What parts of the rhetorical triangle is irrelevant to formalist critics

    asked on November 7, 2010
  28. math

    Y^2-4y+3/y^2-9*4y+12/y2-2y+1= 16y^4+36/2y^5+8 check this please

    asked on May 24, 2010


    asked on March 10, 2010
  30. Critical Thinking

    How would you re-write the following email so that it follow the critical thinking rules? I don’t have a lot of time to explain but off the top of my head answer is as a reader critical thinking affects me all ways. Not just reading but writing too.

    asked on September 10, 2009
  31. Computers(Java Programming)

    Service Class: Lottery Write a Lottery class that simulates a lottery. The class should define an array of five integers named lotteryNumbers. The constructor should use the Random class (see the Java API) to generate a random number in the range of 0 to

    asked on September 8, 2009
  32. 3rd grade-social studies

    Proverb: "It does not matter if the cat is black or white so long as it catches rats". Go beyond and break it down. Draw a picture for each part then write what it could mean. Not sure what has to be done here.

    asked on February 5, 2009
  33. 3rd grade-music

    The song "Minnie the Moocher" by Cab Halloway-retell what the story is about. Use details in song to support your thinking.

    asked on November 1, 2008

    The average kinetic energy of an atom in a monatomic ideal gas is given by KE=3/2kT, where k=1.38*10^-23J/K and T is the Kelvin temperature of the gas. Determine the de Broglie wavelength of a helium atom (mass=6.65*10^-27kg) that has the average kinetic

    asked on April 29, 2008
  35. Algebra

    Can someone help. Solve by completing the square. x^2=5x+2 x^2 -5x -2 = 0 x^2 - 5x + (5/2)^2 -2 = (5/2)^2 (x- 5/2)^2 = 2 + 25/4 = 33/4 x - 5/2 = sqrt (33/4)

    asked on July 12, 2007
  36. Math

    12k-15a +21t over 3=4k-5+7 check this to c if it right

    asked on January 14, 2020
  37. Math

    Jen has read 4/5 of a book. The net day she read 2/3 of what she had left. What fraction of the books is left to read? 4/5 x 2/3= 4/5 x3/2= 12/10=1 2/10=1 1/5 is this right

    asked on November 19, 2019
  38. Math

    Tim earns $150/week plus $15.50 for each desk he assembles. How many desks does he need assemble to make $ 400 in one week? 150 +15.50 =400 15.50 x=248 x= 248/15.50=16.129 15.50 x16=248 248 +150=398 need 16 chairs check this

    asked on November 12, 2019
  39. Chemistry

    Hi! I just have a question about significant figures. If an answer I got for the percentage composition of KCN is 60.043% for K and it needed 4 significant figures, would I omit the zero after the decimal and write it as 60.43% or keep it is 60.043%?

    asked on October 15, 2019
  40. Math

    The lengths of two sides of a triangle are 15 inches each. The third side measures 10 inches. What type of triangle is this? Explain your answer using geometric terms.

    asked on April 17, 2018
  41. Math

    A bedroom door in the house has the dimensions as the front door, which is at top 2 in. and the bottom is 36 in. but the length is 30 inches rather than 36 inches. How much greater is the volume of the front door than the bedroom door?

    asked on April 13, 2018
  42. Math

    You begin to fill a bucket with water at 9 am. Each minute you double the amount of water in the bucket. If it takes you 1 hour to fill the bucket, at what time is the bucket one-quarter full?

    asked on April 3, 2017
  43. calculus

    Use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. xy = 2, x = 0, y = 2, y = 4

    asked on March 7, 2017
  44. Physic

    A 25 kg box is set on a flat surface with us=0.62 and uk=0.49. A force of 100N is applied to the box through a rope which makes and angle of 30 degrees with the horizon. (a)what's the component of Fa that is attempting to move the box sideways? (b) what's

    asked on March 3, 2017
  45. diameter

    The famous rotunda of the Capital Bldg has a floor that is 96 feet in diameter. A marble restoration company charges $40 per sq. yard for its services. How much would it cost to restore the entire floor in the rotunda? My answer 96 feet in diameter C=πd

    asked on May 1, 2016
  46. Geometry

    A football player completed a 45 yard pass. How many inches is that? How many centimeters? I performed the dimensional analysis 45 yds * 36 in over 1yd final step was 1620 in * 2.54 cm =4114.80 cm

    asked on April 30, 2016
  47. programming

    Create the logic for a program that calls a method that computes the final price for a sales transaction. The program contains variables that hold the price of an item, the salesperson's commission expressed as a percentage, and the customer discount

    asked on February 18, 2016
  48. Physics 30

    calculate the netforrce on q2? calculate the net force on q3? q1=+3.0 MC q2=+3.0MC q3=-6.0MC q1-------20cm-------------q2 I I I 50 cm I I I q3

    asked on February 6, 2016
  49. Physics 30

    A. Calculate the net force on q2? b. calculate the net force on q3? q1= +2.0 MC q2=+3.0 MC q3=+6.0 MC q1-----30cm-----q2-----------45cm----------q3

    asked on February 6, 2016
  50. Physics 30

    The circuit has two resistors? V= 22V R= 27 Komega R=? I= 12mA

    asked on February 6, 2016
  51. Physics 30

    A circuit with a single 25.0 omega resistor runs for 5.00 s. During this time10.0 C pass through a point in the circuit. a. What is the power rating of this circuit? b. How much energy is used?

    asked on February 6, 2016

    how far apart are two point charges of 5.0x10^-6 C and 6.0x10^-6 C if they produce an electric force on each other of 0.62 N?

    asked on February 6, 2016
  53. chem 30

    When 7.5 g of ethane was completely burned, all the heat produced was used to heat 1.50 kg of water. If the temperature of water rose from 20EC to 80EC, the heat of combustion of ethane is

    asked on January 24, 2016
  54. Math

    A shaded circle has a diameter of 12 feet. Within the circle, is another white circle with a radius of 2 feet. What is the area of the shaded circle.

    asked on May 17, 2015
  55. Statistics

    The percentage of various colors are different for the "peanut" variety of M&M's candies, as reported on the Mars, Incorporated website. Brown: 12% Yellow: 15% Red: 12% Blue: 23% Orange: 23% Green: 15% A 14-ounce bag of peanut M&M's is randomly selected

    asked on March 28, 2015
  56. Dynamics

    The acceleration of a particle which moves along the x axis is given by a=4x+5x^(3/2) The particle has speed of 2m/s when x=1m x is in meters a is in m/s^2 evaluate the velocity when x = 8m I know that I need to use kinematic eqn 3 adr = vdv then take the

    asked on January 12, 2015
  57. Math

    explain base 10

    asked on December 8, 2014
  58. alegebra

    A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail

    asked on September 22, 2014
  59. math

    A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail

    asked on September 22, 2014
  60. psycholocy

    Professor Stone follows patterns as they relate to human habitats, development, and behaviors. She is _____________.

    asked on August 11, 2014
  61. College Anatomy

    Within the nervous system, the (a) are to the ganglia as a tract is to a (b).

    asked on October 24, 2013
  62. Anatomy

    The ______ ______ (two words), a syndesmosis, which provides a pivot point where two parallel-aligned bones, like the tibia and fibula, can move against each other.

    asked on October 3, 2013
  63. Anatomy

    The ______ of the knee not only provide cushioning but assist with stability and improving fit between the articulating surfaces during movement.

    asked on October 3, 2013
  64. Anatomy

    A ________ are designed to alleviate friction that may be caused by accessory structures, like a tendon, during movement of a synovial joint.

    asked on October 3, 2013
  65. Anatomy

    Orthodontic braces can be painful, this is due in part to placing mechanical stress on the ____________ (joint type), causing ___________ of the alveolar sockets of the mandible/maxilla as the teeth are slowly repositioned.

    asked on October 3, 2013
  66. Thermodynamics

    The initial state consists of a closed system containing one mole of water (liquid) at 85°C and 1 atmosphere pressure. The immediate surroundings are also at 85°C and 1 atmosphere pressure. The change in state is described as this one mole of liquid

    asked on October 3, 2013
  67. Materials Transport

    You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

    asked on September 30, 2013
  68. Materials Transport

    You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

    asked on September 30, 2013
  69. college math

    I need help to simplify (-9)(-7) + 6?

    asked on September 8, 2013
  70. sentence@spelling

    which one of the following fragment is a prepositional phrase going to cliveland. listeningto her heart. cmopleted her assigment. during the darkest. night.

    asked on July 23, 2013
  71. Mathematics

    what geometric figure/shape can we find in enchanted kingdom, rizal shrine in laguna, and in gardenia factory?????? i really need it plz help me T.T

    asked on February 22, 2013
  72. Chemistry

    What is the mass of a 8.64% (m/m) AlCl3 solution containing 7.59g AlCl3?

    asked on February 7, 2013
  73. Chemistry

    Cow's milk contains 32g of protein in 1052g of milk. What is mass/mass percent concentration of protein in the milk?

    asked on February 7, 2013
  74. Chemistry

    What is the mass of lithium chloride in 27.8g of a 4.85% (m/m) LiCl solution?

    asked on February 7, 2013
  75. Chemistry

    If a 8.0mL sample of blood plasma has a mass of 8.223g and contains 1.233g of urea, what is the mass/mass percent concentration of urea in the sample?

    asked on February 7, 2013
  76. physics

    The SI unit of energy can be expresses as what?

    asked on December 4, 2012
  77. Chemistry

    Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 155 of ?

    asked on November 2, 2012
  78. Physics

    Bob jumps from a 2.0 m high table and wants to jump over a 0.85 m radius ball. How fast must Bob move horizontally to not land on the ball? If we use kinematics equations for projectile, the answer is 2.66 m/s; however, with this velocity the person will

    asked on September 19, 2012
  79. case management

    Identify the differences and similarities of case management in the community setting and in the managed care environment?

    asked on September 9, 2012
  80. Calculus

    assume that f(x)= x^3(x-2)^2 a) find the x-intercepts algebraically b) find all the critical points c) use the first derivative test to determine local minimums and maximums d)find all inflection points e)state the concavity of the graph on appropriate

    asked on April 24, 2012
  81. Math 208


    asked on February 25, 2012
  82. Calculus

    Evaluate the integral from [(2/square rt 2),0] of dx/sqaure root of (4-x^2)

    asked on February 23, 2012
  83. Calculus

    Integrate [1/square root of(e^(2x)-1)]. I have to use u substitution. We are doing the integrals of inverse trig functions, but I cannot get it to work out!

    asked on February 5, 2012
  84. algebra

    driving at 46 mph one covers 19mi. in how many seconds?

    asked on July 31, 2011
  85. math

    A cable 40 feet long is cut into three pieces so the length of the second piece is 4 times the length of the first piece, and the third piece is five more than twice as long as the first piece. Find the length of the pieces.

    asked on May 31, 2011
  86. math

    A motorcycle leaves Colorado Springs traveling north at an average speed of 47 miles per hour. One hour later, a car leaves Colorado Springs traveling south at an average speed of 54 miles per hour. How long after the motor cycle leaves will it take until

    asked on May 31, 2011
  87. logic

    I need help proving these arguments using rules of inference, please. (S>B) > (SvK) (Kv~D) ~ (H>S) ~S.W / ~H ~A > (B>~C) ~D > (~C >A) D v ~A ~D

    asked on May 18, 2011
  88. Logic

    Need help supplying proo f for the following problem using the rules of inference 1. (Z.Y)> X 2. ~O>Z 3. ~Y>O 4. ~O.T /S

    asked on May 16, 2011
  89. COM/155

    When writing a paragraph, it is important that the topic sentence and supporting points within that paragraph be directly related. What would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?

    asked on May 1, 2011
  90. HCS/552

    How does the Afghanistan opium black market affect the U.S. pharmaceutical industry?

    asked on April 29, 2011
  91. Chemistry

    For the given reaction, how many moles of water will be formed starting with 45.0 moles of aluminum hydroxide: 2AL(OH)3(s) + 3 H2SO4 > Al2(SO4)3 + 6H2O

    asked on April 3, 2011
  92. Chemistry

    For the given reaction, how many moles of ammonia will result from 4.0 moles of nitrogen N2(g) + 3H2(g) > 2NH3(g)

    asked on April 3, 2011
  93. Chemistry

    How many milliters of 1.80M HCl are required to react with 30.0 grams of calcium hydroxide according to the given equation: CA(OH)2(s) + 2HCl(aq)> CaCl2(aq) + 2H2O(l)

    asked on April 3, 2011


    asked on March 29, 2011
  95. math

    6x=48 x=

    asked on March 24, 2011
  96. math

    subtract -5-12

    asked on March 24, 2011
  97. math

    can you divide -35by 5

    asked on March 24, 2011
  98. algerbra

    rewrite division as multiplication and answere as fraction -37-(78)

    asked on March 24, 2011
  99. algerba

    rewrite division as mulitplication -37-(78)

    asked on March 24, 2011
  100. math

    in triangle abc angle b is 5x angle a and c is 16 degree less than 4 times angle a the size of angle a b c in decimal is

    asked on March 23, 2011


  1. 1
  2. 2