Allen

Most popular questions and responses by Allen
  1. Physic

    Two resistors when connected in series to a 120-V line use one-fourth the power that is used when they are connected in parallel. If one resistor is 4.8 kohms. what is the resistance of the other?

    asked on April 12, 2015
  2. Physic

    A 2.5-kohms and a 3.7-kohms resistor are connected in parallel; this combination is connected in series with a 1.4 kohms resistor. If each resistor is rated at 0.5W (maximum without overheating), what is the maximum voltage that can be applied across the

    asked on April 9, 2015
  3. Chem

    Calculate the standard cell potential given the following standard reduction potentials: Al3++3e−→Al;E∘=−1.66 V Fe2++2e−→Fe;E∘=−0.440 V

    asked on May 18, 2014
  4. Finance

    The following information was available as of the close of business June 1, 2004 on government of Canada bonds. Coupon...Maturity.....Price.....Yield 5.00%......June 1, 2005......102.35......2.60 10.50%......June 1, 2006......113.91......3.26

    asked on November 6, 2012
  5. Chemistry

    Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money? A. Rolaids (550 mg CaCO3 and 110 mg Mg(OH)2 per tablet) – 150 tablets for $9.44 B. Tums (500 mg CaCO3 per tablet) – 150

    asked on March 5, 2018
  6. Physics

    In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 570nm . A)What is the work function of this material? W0= in eV B) What is the stopping voltage required if light of wavelength 420nm is used?

    asked on April 23, 2013
  7. Math

    A decorative pottery bowl with a diameter of 30 cm is used as a garden ornament . A rain shower fills it with water to a maximum depth of 7 cm. The bowl is slowly tipped to remove the water. What angle will the rim of the bowl make with the horizontal when

    asked on November 24, 2016
  8. Physics

    In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 570nm . A)What is the work function of this material? W0= in eV B) What is the stopping voltage required if light of wavelength 420nm is used?

    asked on April 22, 2013
  9. physics

    What is the momentum of a 60 kg sprinter running at 8.0 m/s?

    asked on February 6, 2018
  10. Physics

    A baseball is tossed at a steep angle into the air and makes a smooth parabolic path. Its time in the air is t and it reaches a maximum height h. Assume that air resistance is negligible. a. Show that the height reached by the ball is gt^2/8. b. If the

    asked on July 17, 2011
  11. Physic

    A 75-W, 120-V bulb is connected in parallel with 25-W, 120-V bulb. What is the net resistance?

    asked on April 9, 2015
  12. Math

    Can anyone help with this question? Your backpack contains 2010 chocolate bars, which you are going to divide between your best friend and yourself. You think you are a nice person, so you will give your best friend more than zero chocolate bars. However,

    asked on September 6, 2017
  13. finite math

    suppose that 3 digits are selected at random from the set S={1,2,3,4,5,6} and are arranged in random order. Find the probability that the resulting 3-digit number is less than 300.

    asked on September 4, 2012
  14. Physic

    A 75-W, 120-V bulb is connected in parallel with 25-W, 120-V bulb. What is the net resistance?

    asked on April 12, 2015
  15. Physics

    For a record playing at 45 rpm, find the frequency and the angular velocity. Frequency= Angular velocity=

    asked on April 24, 2012
  16. phics

    In an experiment on motion, a cart weighing 240 N was pulled up an inclined plane. Which of the following would be the expected reading on the spring scale as the cart is pulled up an inclined plane set upon two books

    asked on April 11, 2013
  17. statistics

    In a binomial distribution: A) the random variable X is continuous. B)the probability of event of interest (pie symbol)is stable from trail to trial C) the number of trials n must be at least 30 D) the results of one trial are dependent on the results of

    asked on June 10, 2011
  18. Physics

    three horizontal forces are pulling on a ring at rest F1 is 6.25N at a 180 degree angle and F2 is 8.90 N at a 243 degree direction what is the x component of F3

    asked on June 11, 2019
  19. Math

    Did I simplify these together correctly (2-3i)-(3+5i)? 1) I distributed the negative through 3+5i and got -3-5i 2) then I eventually after that let the 2-3i the same so I have it as: 2-3i-3-5i 3) (2-3) -(-3i-5i) 4) 2-3=-1 and -3-5=-8 5) so eventually in

    asked on November 1, 2018
  20. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 450 mL of a solution that has a concentration of Na+ ions of 0.700 M

    asked on March 27, 2011
  21. Language Arts (english)

    1.In general terms, how do the townspeople in “The Handsomest Drowned Man in the World” react to the body which washes up on their shore? 2.Why do the townspeople react to Esteban as they do? What is he to them? 3.What is a fable, how might “The

    asked on May 16, 2014
  22. Physics

    three horizontal forces are pulling on a ring at rest F1 is 100 N at a 45 degree angle and F2 is 135 N at a 160 degree direction what is the x component of F3

    asked on June 11, 2019
  23. Physic

    Two resistors when connected in series to a 120-V line use one-fourth the power that is used when they are connected in parallel. If one resistor is 4.8 kohms. what is the resistance of the other?

    asked on April 9, 2015
  24. chemistry

    how many grams of magnesium are required to liberate 250 cm3 of Hydrogen gas from HCL

    asked on April 17, 2012
  25. chemsitry

    Calculate the mass in grams of sodium bromide, NaBr, are needed to prepare 250.0 mL of a solution of sodium bromide that is 3.50% (m/v).

    asked on March 20, 2011
  26. Physics

    Three horizontal forces are pulling on a ring at rest. f1 is 6.25 N at 180 degree angle and f2 is 8.90 N at a 243 degree angle direction. What is the y component of F3

    asked on June 10, 2019
  27. chemistry

    A solution containing 40 g of calcium bromide requires 14.2 g of chlorine to react completely with it and 22,2 g of calcium chloride is produced in addition to ehaever bromine is obtained. How many grams of calcium bromide are required to produce 10.0

    asked on October 1, 2016
  28. Literature! HELP

    Romanticism became popular _____. A. before the Enlightenment B. during the Enlightenment C. at the end of the Enlightenment D. a century after the end of the Enlightenment

    asked on July 7, 2010
  29. geometry

    Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks

    asked on March 5, 2011
  30. geometry

    Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks

    asked on March 5, 2011
  31. science

    In space, astronauts don’t have gravity to keep them in place. That makes doing even simple tasks difficult. Gene Cernan was the first astronaut who worked on a task outside a spaceship. He said of the experience, “Every time I’d push or turn a

    asked on October 23, 2018
  32. Solid mensuration

    The bases of a triangular right prism are apart. find the volume and the total surface area of the prism if one side of the quilateral triangular base measures 6cm

    asked on April 25, 2013
  33. cmsd

    Your question: "The shorter diagonal of a rhombus is 50 mm long. Each of its obtuse angles measures 140. Find the length of each side."

    asked on February 20, 2013
  34. english 30-1

    write a short compostion discussing social satire in happy event. what aspects of society is satized? how are devices like irony and hyperbole is used to achieve satire? what changes does the author suggest?

    asked on September 23, 2011
  35. Help1

    WHY rational expressions that are being added must have an LCD, but rational expressions that are being multiplied do not need to have an LCD. The short answer is that addition and multiplication are different operations with different properties. If we

    asked on October 13, 2006
  36. Physics

    A rock thrown from a bridge hits the water below at a horizontal distance x directly below the throwing point. The rock travels a smooth parabolic path in time t. a. Show that the virtical distance of the bridge above water is 1/2gt^2. b. What is the

    asked on July 17, 2011
  37. physics

    Calculate the speed of water (in m/s) flowing from a pipe at the bottom of an open topped barrel which has a water level 138 cm high in it.

    asked on June 21, 2014
  38. math

    Your question: "The shorter diagonal of a rhombus is 50 mm long. Each of its obtuse angles measures 140. Find the length of each side."

    asked on February 20, 2013
  39. physics

    If you do 100 j work in 50 seconds, then your Power output is

    asked on June 18, 2011
  40. math

    A coin is tossed and then a die is rolled. Find the probability of getting a 5 on the die given that the coin landed tails up.

    asked on December 13, 2009
  41. science

    In space, astronauts don’t have gravity to keep them in place. That makes doing even simple tasks difficult. Gene Cernan was the first astronaut who worked on a task outside a spaceship. He said of the experience, “Every time I’d push or turn a

    asked on October 23, 2018
  42. physics

    A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 275keV . What was the energy of the photon? E=in MeV What was the wavelength of the photon? wavelength in m Please help thank you!

    asked on April 22, 2013
  43. Math simple question

    angles 1 and 2 are adjacent angles on a line. What is the sum of the measures of the angles? a.30 b.60 c.90 d. 180 I think the answer is b.

    asked on May 4, 2011
  44. algebra help please

    A bus leaves a station at 1p.m. traveling west at an average rate of 44 mi/h.one hour later a second bus leaves the same station traveling east at a rate of 48mi/h. At what time will the two buses be 274 miles apart I know that I am suppose to use d=r*t

    asked on March 25, 2007
  45. math help? burnet help.

    How is the the graph of y=1/4x -4 obtained from the graph of y=1/x? Horizontally stretched by a factor of 4 and shifted up by 4 units. Vertically stretched by a factor of 4 and shifted down by 4 units. < my answer Horizontally compressed by a factor of 4

    asked on March 27, 2017
  46. Ap European

    In what respect must each of the following share in the war guilt? Austria,Serbia,Russia,France,Britain,Germany

    asked on April 22, 2015
  47. Physic

    A 2.5-kohms and a 3.7-kohms resistor are connected in parallel; this combination is connected in series with a 1.4 kohms resistor. If each resistor is rated at 0.5W (maximum without overheating), what is the maximum voltage that can be applied across the

    asked on April 12, 2015
  48. Physics

    A block of mass 12.0 kg is initially sitting at rest on a 30.0o incline. There is a spring mounted to the ramp with spring constant k = 13500 N/m. The block is released to slide down the incline and comes to a stop momentarily after the spring has been

    asked on May 30, 2014
  49. math

    Tom sleeps an average of 7.73 hours a day. In one non-leap year, how many hours does Tom sleep?

    asked on September 3, 2010
  50. algebra

    A tower 25 meters tall casts a shadow 20.8 meters long. What is the distance from the top of the tower to the end of the shadow?

    asked on May 7, 2017
  51. Math

    Estimate. Then find the sum 540,943 + 382093

    asked on October 6, 2015
  52. Ap European

    In what respect must each of the following share in the war guilt? World war 1 Austria,Serbia,Russia,France,Britain,German

    asked on April 22, 2015
  53. college physics

    "The Magnitude of the buoyant force is equal to the weight of fluid displaced” is a statement of which principle in the study of fluids? Select one: a. Pascal's Principle b. Archimedes' Principle c. Bernouilli’s Principle d. The Equation of Continuity

    asked on June 16, 2014
  54. College Physics

    A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.

    asked on October 14, 2011
  55. Physics

    During a baseball game, a batter hits a pop-up to a fielder 83 m away. The acceleration of gravity is 9.8 m/s^2. If the ball remains in the air for 6.5 s, how high does it rise? Answer in units of m

    asked on October 1, 2011
  56. MATH(quick Help please)

    Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Show work thanks

    asked on June 6, 2011
  57. TECH(recycle)

    I'm making a recycle logo i need some good ideas to put in the logo and can u give me examples of good recycling logos

    asked on May 9, 2011
  58. Math

    two sides of a triangle are equal. The third side is 3 less than the sum of the two equal sides. The perimeter is 31 inches. Find the length of each side

    asked on December 10, 2010
  59. history

    cause: americans moved into spanish texas effect: what's an effect

    asked on November 7, 2010
  60. physics

    An astronaut, mass 128.2 kg including spacesuit, pushes off from the International Space Station (mass 110 tons) with a speed of 1.2 m/s. What is the speed of the Space station in the opposite direction? Use 2 s f. for your answer

    asked on June 9, 2014
  61. finite math

    Given n(A')=23, n(B')=16, and n((A [intersect] B) U (AUB)'))= 24, find (A [intersect] B) I apologize but intersect was the best way I found to represent the upside down U symbol.

    asked on September 9, 2012
  62. chemistry

    How many grams of carbon can be burned in 15 dm3 of oxygen and many dm3 of CO2 is produced?

    asked on April 17, 2012
  63. College Physics

    A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.

    asked on October 14, 2011
  64. College Physics

    A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.

    asked on October 14, 2011
  65. math

    On the way to school, Bobby noticed the school bus travels 8 miles north, then turns west and goes 6 miles to get to school. If there were a road that went straight from Bobby's house to school, how long the road would be?

    asked on February 25, 2011
  66. APUSH

    How have perspectives about health and conservation changed since the late 1800s?

    asked on January 25, 2018
  67. Trig

    To help a young tree grow straight, a gardener attaches three guy wires to it and the ground. She places the wires two feet below the top of the tree. If the wires are ten feet long and each makes an angle of 58 degrees with the ground. Find the height of

    asked on May 8, 2017
  68. Physics

    if mars orbits the sun at an angular velocity of 1.06x10-7 rad/s, how long is a year on mars in earth days assuming it travels in a circular orbit?pls explain

    asked on January 10, 2016
  69. corporate finance

    Your finance text book sold 45,500 copies in its first year. The publishing company expects the sales to grow at a rate of 20.0 percent for the next three years, and by 7.0 percent in the fourth year. Calculate the total number of copies that the publisher

    asked on July 30, 2014
  70. physics

    A sound registers 77.9 decibels on a detector. What is the intensity in W/m2? Assume the threshold of human hearing is 1.0×10-12 W/m2. Give your answer in picowatts/m2. 1 pW = 1×10-12 W/m2

    asked on June 21, 2014
  71. physics

    An object of mass 1.6 kg is dropped from a height of 2.9 metres. It lands with a speed of 2.8 m/s. How much energy was lost due to air resistance? (Give your answer to 2 s.f., expressed as a magnitude)

    asked on June 9, 2014
  72. Math

    Mark bought 54 cm of lace and 2m 45cm of black lace. How much total lace in meters did he buy?

    asked on December 2, 2012
  73. posibility

    One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

    asked on November 16, 2012
  74. Business- Labor

    true or false Arbitration and grievance procedures have done virtually nothing to prevent chaos and disorder in labor relations.

    asked on September 18, 2012
  75. Business- Labor

    Labor’s membership stagnation in the last half-century can be explained by several formidable obstacles. Explain

    asked on August 12, 2012
  76. alebra

    how do i simplify 3m+n/4n^2m + 3m +n +5/4n^2m

    asked on March 1, 2012
  77. College Physics

    A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.

    asked on October 14, 2011
  78. ELA (QUICK QUESTION)

    i need some postive and negative aspects of schools. i need help starting my intro can you help me thanks

    asked on May 31, 2011
  79. Math

    Here's a frequency distribution table for the speeds of a sample of automobiles. Speed(MPH) Frequency Midpoint(I found) 50-54 2 52 55-59 4 57 60-64 5 62 65-69 10 67 70-74 9 72 75-79 5 77 I am trying to find the variance but whatever I do I can't seem to

    asked on May 27, 2011
  80. math

    solve -4+7logx=10 & log(x+3)+log(x-2)=log14

    asked on May 5, 2011
  81. math

    Dane is three years older than twice his brother's age,(b). Which algebraic expression below represents Dane's age? A. b+3 B. 2b+3 C. 3-2b D. 2b-3 I think the answer is C.

    asked on February 25, 2011
  82. math

    Daniel's bonus at work this year is $1000.00 added to 20% of his yearly salary. If X represents his yearly salary, which of the following algebraic expressions should be used to figure the amount of his bonus? A. 0.2(1000+x) B. 1000+x/0.2 C. 0.2x+1000 D.

    asked on February 25, 2011
  83. math

    Earl cuts lawns in his neighborhood. He can cut 1 lawn in 45 minutes, and he gets paid $9.00 per lawn. What is his rate of pay per hour?

    asked on January 12, 2011
  84. history

    what are ten adjectives that railroad transportation

    asked on November 14, 2010
  85. history

    cause: british impressed american sailors Whats a effect?

    asked on November 7, 2010
  86. history

    is late neo indians nomadic or sedentary?

    asked on October 5, 2010
  87. Alg2

    The tangent to a circle may be defined as the line that intersects the circle in a single point, called the point of tangency. If the equation of the circle is x^2 + y^2 = r^2 and the equation of the tangent line is y = mx + b, show r^2(1 + m^2) = b^2

    asked on October 22, 2009
  88. math

    need help Tweleve is sixteen less than four times a number.

    asked on December 9, 2007
  89. Algebra 2

    Before I go on and give you the problenms let me explain. i am not some lazy kid trin to get people to do my homework over the internet. I am freshman that just recently skippeda garde in math and I need some help. The problems below are from my pop quiz

    asked on October 21, 2007
  90. algebra

    A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic.if the roof is 7 m from peak to eave and the attic space is 3 m high at

    asked on May 4, 2007
  91. Chemistry

    How many mL of 0.0257 N KIO3 would be needed to reach the end-point in the oxidation of 34.2 mL of 0.0416N hydrazine in hydrochloric acid solution

    asked on June 4, 2017
  92. Math

    Sarah had got 40 out of 50 questions right. What is the percentage of questions Sarah got right? Explain and show your work.

    asked on March 30, 2017
  93. Physics

    A car travelling at 90 km/hr sounds it horn as it approaches a stationary cyclist.if the car horn is at 512 Hz and temperature of air is 10 degree centigrade, what is the frequency of the sound waves reaching the cyclist as car approaches.

    asked on June 5, 2016
  94. physics

    Calculate the speed of a wave in m/s along a taut string with tension 139 Newtons and a mass per unit length of 3.6 grams per metre.

    asked on June 21, 2014
  95. Physics

    A system gains 473J of kinetic energy while losing 271J of potential energy. The thermal energy increases by 127J . Use an energy bar chart of this process to find the external work Wext.

    asked on June 5, 2014
  96. Algebra

    How do I solve: One leg of a right triangle is 4 m longer than the other. If the length of the hypotenuse is 18 m, how long are the other two legs?

    asked on April 29, 2014
  97. Math 102

    What number must be added to the numerator and subtracted from the denominator of 10/23 to obtain a fraction equivalent of 6/5? Please provide step by step, this is a word problem for rational expressions. Thank you

    asked on October 4, 2012
  98. Business- Labor

    how sympathetic are you to the statement of a former general motors chairman that offering a union leader a seat on GMs board of directors made "as much sense as having a member of GM's management sitting on the board of an international union?" Explain. I

    asked on September 6, 2012
  99. Business- Labor

    do you believe that public employees should be able to employ collective bargaining for wage increases or should the ‘free market’ continue to dictate wages in the public sector? Why or why not?

    asked on August 23, 2012
  100. physics

    if one man 50 kgs fell from 10 meter high builder, how much impact force when he hit the concrete ground and how long the time it happen.

    asked on February 21, 2012

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