1. Archives
  2. 2013
  3. July

Questions Asked on
July 14, 2013

  1. Statistics Help !!

    Are my answers here correct ? Research questions for z test, t test for independent samples and t test for dependent samples : z test: "An investigator is interested in finding out whether the particular sample of college students is similar to or

    asked by Rey

  2. Physics

    A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 10.0 kg, travels 6.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 60.0° angle,

    asked by Jenny

  3. chemistry:acid-base

    can u help me in explaining why we used 5ml instead of 55.00ml of acetic acid on our calculation in titration ?

    asked by dyana

  4. economics

    The reasons that cause monopoly occurrence

    asked by christopher

  5. Algebra

    1. what is the 6th root of 8j^6k^3m^3n? 2. What is the fourth root of 4f^2g^2?

    asked by Kim

  7. analytic geometry

    The segment joining (-1,4), (2,-2) is extended three times its own length. Find the terminal points.

    asked by lex

  8. help physics

    A helium ion is at rest in a laboratory when it is put in an electric field of E=2 N/C. An infrared light, of wavelength 2000 nm, is directed towards the ion. The ion is moving towards the source of radiation. After what time in the laboratory frame in

    asked by Steve

  9. physics help pls

    large number of AA batteries with emf E=1.5 V and resistors with resistance R form an infinite circuit . The internal resistance of the batteries is r. Thevenin's theorem tells us that this infinite circuit can be replaced by a single source with emf E_eq,

    asked by Steve

  10. tough physics

    A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions

    asked by Steve

  11. Life orientation

    In 10-15 lines discuss 5 ways in which the human or environmental problem impacts on the community.

    asked by Lusanda

  12. math

    Jeff Iron $250 on his $5000 certificate of deposit last year. what simple interest rate did the bank pay him?

    asked by devin

  13. home school

    6 cm + 4 mm = =mm

    asked by celia

  14. life orientation

    substance abuse in 10-15 lines critically discss 5 ways in which the human or environmental problem impacts on the community.

    asked by nyikiwe

  15. GEOMETRY (SA oftriangular pyramid)

    Find the surface area of a triangular pyramid with b =4 cm, h= 8.2 cm and s = 7 cm. PLEASE. How ?

    asked by Lloini

  16. Physics

    An electrostatic paint sprayer has a 0.200-m-diameter metal sphere at a potential of 25.0 kV that repels paint droplets onto a grounded object. What charge must a 0.100-mg drop of paint have to arrive at the object with a speed of 10.0 m/s?

    asked by katie

  18. GEOMETRY(SURFACE AREA)

    Find the surface area and the lateral area of a regular square pyramid with base edge 6 and a lateral edge √34. PLEASE PLEASE HUHU Teach me how and what is lateral edge

    asked by Laarni

  19. physics

    What is the final position of a mosquito that flies from an initial position of 20 cm in 20 seconds at -0.5 m/s?

    asked by help

  20. PHYSIC

    You are a member of an alpine rescue team and must project a box of supplies, with mass m, up an incline of constant slope angle α so that it reaches a stranded skier who is a vertical distance h above the bottom of the incline. The incline is slippery,

    asked by kolam

  21. GEOMETRY (SA oftriangular pyramid)

    Find the surface area of a triangular pyramid with b =4 cm, h= 8.2 cm and s = 7 cm. PLEASE. How ? GEOMETRY (SA oftriangular pyramid) - MathMate, Sunday, July 14, 2013 at 8:41am Lateral surface area =perimeter of base * apothem /2 =3b*s/2 (for a regular

    asked by dull

  22. trig

    simplify the expression. cot^2(x)-csc^2(-x)

    asked by trig

  23. math

    1. Lisa is 15 years old and her father is 40. How many years ago was the father six times as old as Lisa? 2. Joel is one third the age of Bob. In 7 years the combined ages of the boys will be 58. How old is each boy now? 3. Tom is three times as old as

    asked by John

  24. Computers C++

    1). After the assignment statement result = isspace('\t'); result has the value ________. 2). The data type of islower('g') is ________. 3). What will be output given the following information: float * pointer; float pay = 3.75; pointer = &pay; cout

    asked by Keith

  25. math

    A box contains 4 tickets letter O, A, G, C. Two tickets will randomly be selected without replacement. What is the probability of selecting O then A in that order?

    asked by Anonymous

  26. Thermodynamics

    Posted by Danny on Saturday, July 13, 2013 at 9:42am. 1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000

    asked by Danny

  27. trig

    simplify the expression. (sin^2x+cos^2x) - (csc^2x-cot^2x)

    asked by trig

  29. math

    1. The greater of two integers is 4 times the lesser. Of the lesser integer is increased by 12, the result is 3 less than the greater.Find the integers. 2. Tom is three times as old as Leigh Ann. In 7 years, the sum of half of Tom's present age and a third

    asked by kim

  30. math

    A. Lisa is 15 years old and her father is 40. How many years ago was the father six times as old as Lisa? B. Joel is one third the age of Bob. In 7 years the combined ages of the boys will be 58. How old is each boy now?

    asked by Barrie

  31. GEOMETRY(SURFACE AREA)

    find the surface area of a square pyramid with s=4.2 cm and h=7cm( slant height)

    asked by dull

  32. Math

    Express 2.4 as a fraction in its simplest form

    asked by Ron

  33. math

    L=2C+11(D+d)/7+(D-d)^2/4C what is L(in inches)if D=12 inches d=2inches and C=25 inches

    asked by era22

  34. physics

    a body travels 200 cm in the first two second and 220 cm in the next 4 seconds.what will be the velocity at the seventh second from the start.

    asked by AAYUSH

  35. Chemistry

    Net ionic equations for: Br- + AgNO3 CO3 + AgNO3 Cl-+ AgNO3 I + AgNO3 PO4^-3 + AgNO3 SO4^-2 + AgNO3 S^-2 + AgNO3 They all formed ppt,but I don't know where to go from here. Even a couple to get me started would be greatly appreciated!

    asked by Ann

  36. Physics (Help)

    1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and

    asked by Danny

  37. Life orientation

    Describe the life style disease/behavior and explain 5 factors that contribute to the lack of physical fitness and proper nutrition in the adolescent

    asked by Anonymous

  38. chem 103

    Still stuck on this question. How many grams of Na3PO4 would you need to make 0.225L of 8.0M stock solution? 8.0 M of NaPo multiplied by .225L NaPO = 1.8 mols of Na3PO4. Then multiply the 1.8 mol times the mass of Na3PO4 which is 163.93 grams?, yes? This

    asked by Andrew

  40. accounting

    deer valley lodge adds 5 chairlifts, another costs $1.3. 300

    asked by Anonymous

  41. Life orientation

    Describe the life style /behavior and explain 5 factors that contribute to the disease cancer

    asked by Anonymous

  42. english

    asking questions and drawing conclusions will dowhich of the following: a-help you stay alert b-engage you in active listening c-help you remember information d-all of the above

    asked by rope

  43. Life orientation

    Describe the life style disease/behavior and explain 5 factors that contribute to the lack of physical fitness and proper nutrition in the adolescent

    asked by Anonymous

  44. Informal logic

    All sages provide both wisdom and inspiration. Since Dasha’s speech contained wisdom and greatly inspired her audience, Dasha is a sage. Which one of the following points out the flaw in the argument above? (Points : 1) -Just because Dasha is a sage

    asked by Veronica

  45. Informal logic

    Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence does not suggest

    asked by Veronica

  46. maths

    I am a three-digits no multiple of 50, my first two digits are even and their difference is 6. What am i

    asked by Anonymous

  47. Elementary mechanics

    A force of 2i+7jN acts on a body of mass 5kg for 10 seconds. The body was initally moving with constant velocity of i-2jm/s.Find the final velocity of the body in m/s, in vector form. (a)5i+12j(b)12i-5j(c)10i-7j(d)7i+10j

    asked by jane

  48. criminal justice

    Describe the history of European corrections philosophies and how it shaped today's American corrections practices. Compare the similarities and differences of today's corrections practices with American corrections practices in the 1800s.

    asked by kary

  49. physics

    a motorcycle has a speed of 25.5 m/s what is the kinetic energy of the motorcycle

    asked by chris

  51. Physics

    A person carries a plank of wood 2 m long with one hand pushing down on it at one end with a force F1 and the other hand holding it up at 50 cm from the end of the plank with force F2. If the plank has a mass of 20 kg and its center of gravity is at the

    asked by Amy

  52. Physics

    At its peak, a tornado is 60.0 m in diameter and carries 500 km/h winds. What is its angular velocity in revolutions per second?

    asked by Amy

  53. algebra

    Solve the given system by the substitution method. 2x+y=6, 5x-2y=6

    asked by angela

  54. math

    1. The largest of five consecutive integers is twice the smallest. Find the smallest integer. 2. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three integers. 3. If each of three consecutive integers is divided by 3,

    asked by rita

  55. algebra

    $ 5900 is invested, part of it at 12% and part of it at 8%. For a certain year, the total yield is $ 596.00. How much was invested at each rate.

    asked by angela

  56. Accounting

    An example of an economic entity us a" a. town. b. business. c. nonprofit hospital. d. church

    asked by J Dub

  57. accounting

    A firm issues periodic reports called? a. financial statements. b. summaries. c. tax returns. d. audits.

    asked by nunya

  58. chemistry

    How much faster will neon effuse than krypton, given that the molar mass of krypton is 83.8 grams and that of neon is 20.18 grams?

    asked by Eric

  59. Physics

    Suppose you exert a force of 180 N tangential to a 0.280-m-radius 75.0-kg grindstone (a solid disk). (a)What torque is exerted? (b) What is the angular acceleration assuming negligible opposing friction? (c) What is the angular acceleration if there is an

    asked by Justin

  60. Physics

    What is the moment of inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a final velocity of 6.00 m/s? Express the moment of inertia as a multiple of MR2, where M is the mass of the object and R is its

    asked by Justin

  62. Physics

    . (a) Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.400 kg ⋅ m2. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value

    asked by Justin

  63. Physics

    What is the final velocity of a hoop that rolls without slipping down a 5.00-m-high hill, starting from rest?

    asked by Justin

  64. Physics

    A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a 240-g rock that displaces 89.0 cm3 of water? (Note that the accuracy and

    asked by Justin

  65. Physics

    The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 1.00 g is supported by a needle, the tip of which is a circle 0.200 mm in radius, what pressure is exerted on the record in N/m2?

    asked by Justin

  66. algebra 2

    Which is the standard form of a circle with equation x^2 + 4x + y^2 - 6y = 3? A. (x+2)^2+(y+9)^2=16 B. (x-2)^2+(y-9)^2=3 C. (x+2)^2+(y-3)^=16 D. (x+2)^2+(y-3)^2=3

    asked by Sam

  67. Math

    Five weeks is how many seventy-thirds of a year

    asked by ABC

  68. Physics Help

    1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and

    asked by Danny

  69. Accounting

    For the current year ending March 31, Ewok Company expects fixed costs of $740,000, a unit variable cost of $55, and a unit selling price of $80. a. Compute the anticipated break-even sales (units). units b. Compute the sales (units) required to realize

    asked by Anonymous

  70. Accounting

    Currently, the unit selling price of a product is $110, the unit variable cost is $80, and the total fixed costs are $345,000. A proposal is being evaluated to increase the unit selling price to $120. a. Compute the current break-even sales (units). units

    asked by Anonymous

  71. Accounting

    a. Bryan Company budgets sales of $1,800,000, fixed costs of $1,000,000, and variable costs of $1,080,000. What is the contribution margin ratio for Bryan Company? (Enter your answer as a whole number.) % b. If the contribution margin ratio for Carnegie

    asked by Anonymous

  73. Physics

    Two 1.5 kg balls move away from each other, one traveling 6 m/s to the right, the other 2 m/s to the left. What is the magnitude of the total momentum of the system? Answer in units of kg · m/s

    asked by Lynn

  74. Java programming- simulation of rolling dice

    This is what i have so far. I'm supposed to simulate the 4 dice tossed 1 million times . (so a total of 4 million) I'm trying to get the first die(If I can figure out the first one then I can figure out the other 3. So the trouble I am having is that I

    asked by Joel Borja

  75. 7th grade english

    The book A Child Called “It” is about the struggle of a young boy named David Pelzer who was severely emotionally and physically abused by his alcoholic mother Catherine Rovera. From being abused along to being emotionally abused to the point where

    asked by tom

  76. math

    A. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice as old as Danielle. How old is Kristen now? B. The greater of two integers is 4 times the lesser. Of the lesser integer is increased by 12, the

    asked by rita

  77. trig

    simplify the expression. cos^2x+sin^2x/cot^2x-csc^2x

    asked by tony

  78. RE

    I have to draw upon the Christian parallels within the story of The Lion, the Witch and the Wardrobe. I have found information on all the characters other than the beavers. could anyone shed some light on this. thanks

    asked by Emily

  79. biology

    This question consisted of a pedigree which involves certain inbred individuals which you are going to identify. The inbred coefficient is for one of the first cousins named Stormy is F = 0.08. An individual called Shady is a parent. Question: Is Shady

    asked by azonto

  80. Accounting

    Based on the following production and sales estimates for May, determine the number of units expected to be manufactured in May. Estimated inventory (units), May 1 20,000 Desired inventory (units), May 31 15,000 Expected sales volume (units): South region

    asked by Anonymous

  81. Accounting

    As of January 1 of the current year, the Grackle Company had accounts receivables of $50,000. The sales for January, February, and March were as follows: $120,000, $140,000 and $150,000. 20% of each month’s sales are for cash. Of the remaining 80% (the

    asked by Anonymous

  82. Physics

    A rifle with a weight of 20N fores a 5.0g bullet with a speed of 300m/s. (a) Find the recoil speed of the riffle (b) If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and the rifle. Please show work. Thank you!

    asked by Xian

  84. Accounting

    Below is budgeted production and sales information for Flushing Company for the month of December: Product XXX Product ZZZ Estimated beginning inventory 30,000 units 18,000 units Desired ending inventory 34,000 units 17,000 units Region I, anticipated

    asked by Anonymous

  85. Accounting

    Production and sales estimates for April are as follows: Estimated inventory (units), April 19,000 Desired inventory (units), April 30 18,000 Expected sales volume (units): Area A 3,500 Area B 4,750 Area C 4,250 Unit sales price $20 The number of units

    asked by Anonymous

  86. physics

    A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-mhigh rise and angle is 35 degrees.Find her final speed at the top, given that the coefficient of friction between her skis and the snow is 0.0800. (Hint: Find the distance traveled up the

    asked by Amy

  87. trig

    simplify the expression. tan(π/2-x)tanx

    asked by tony

  88. Chem

    H. Using the technique outlined in this lab, a student decided to test wastewater for the presence of phosphate. The first reading produced an extremely dark blue color and a concentration higher than 3ppm. After performing a 10 ml dilution, the

    asked by Morgan

  89. alg2 help

    [4x/ 3y]^2 it should look like 4x over 3y in parenthesis ^2 at the top right. please take me step by step I got 1.6

    asked by tyneisha

  90. accounting

    An example of an economic entity is a: a. town. b. business. c. nonprofit hospital. d. church.

    asked by JDub

  91. statistics

    n a survey of 634 males ages 18-64, 392 say that they have gone to the dentist in the past year contrast 90% and 95% confidence intervals for the population proportions, interperate the results and compare withsof the confidence intervals

    asked by MOE

  92. alg 2

    does the graph of the solution to the inequality 4x-7 > -5 have a closed circle at 3 and is shaded to the right? the (>) is suppose to be on top of the (-) I got 3 and shaded to the right?

    asked by tyneisha

  93. Accounting

    If fixed costs are $300,000, the unit selling price is $31, and the unit variable costs are $22, what is the break-even sales (units) if fixed costs are reduced by $30,000? Answer 30,000 units 8,710 units 12,273 units 20,000 units

    asked by Anonymous

  95. Accounting

    If fixed costs are $250,000, the unit selling price is $125, and the unit variable costs are $73, what is the break-even sales (units)? Answer 3,425 units 2,381 units 2,000 units 4,808 units

    asked by Anonymous

  96. Accounting

    If fixed costs are $350,000, the unit selling price is $29, and the unit variable costs are $20, what is the break-even sales (units) if the variable costs are decreased by $4? Answer 26,924 units 12,069 units 21,875 units 38,889 units

    asked by Anonymous

  97. Literature

    What do you think Antigone and A Raisin in the sun in plus to Sophocles and Lorrain Hansbury cultural identity ?

    asked by Hannah :-)

  98. Physics

    A 0.450 kg hammer is moving horizontally at 8.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board.(a) Calculate the duration of the impact.(b) What was the average force exerted on the nail?

    asked by Amy

  99. Physics

    Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 180,000 kg and a velocity of 0.300 m/s, and the second having a mass of 95,000 kg and a velocity of

    asked by Amy

  100. Physics

    Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. The first has a mass of 2.00 multiplied by 103 kg, and the second a mass of 7.50 multiplied by 103 kg. If the two satellites collide elastically rather than

    asked by Amy

  101. Physics

    A 0.0200 kg bullet moving horizontally at 500 m/s embeds itself into an initially stationary 0.500 kg block. (a) What is their velocity just after the collision? (b) The bullet-embedded block slides 8.0 m on a horizontal surface with a 0.30 kinetic

    asked by Amy

  102. Physics

    In an ice show a 40.0 kg skater leaps into the air and is caught by an initially stationary 65.0 kg skater. (a) What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s? (b) How much kinetic

    asked by Amy

  103. Physics

    A 8.00 multiplied by 107 kg battleship originally at rest fires a 1400 kg artillery shell horizontally with a velocity of +550 m/s. (a) If the shell is fired straight aft, there will be negligible friction opposing the ships recoil velocity. Calculate its

    asked by Amy

  104. Physics

    Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. The first has a mass of 4.50 multiplied by 103 kg, and the second a mass of 7.50 multiplied by 103 kg. Assume that the positive direction is directed from the

    asked by Amy

  106. Physics

    A 41.0 cm diameter wheel accelerates uniformly from 86.0 rpm to 342.0 rpm in 3.4 s. How far (in meters) will a point on the edge of the wheel have traveled in this time?

    asked by Igor

  107. Physics

    In a circus an elderly performer thrills the crowd by catching a canon ball shot at him. The cannon ball has a mass of 28.0 kg and its horizontal component of velocity is 6.50 m/s when the 65.0 kg performer catches it. If the performer is on nearly

    asked by Amy

  108. Literature

    What was a tense or exciting moment in A Raidin in the Sun and Antigone? What literary device was used?

    asked by Brianna

  109. Algebra 2 help

    Consider the following functions. f(x) = x2 − 3x, g(x) =√(x+2) (a) Find (f *g)(x). (Simplify your answer completely.) (B)Find the domain of f *g. (Enter your answer using interval notation.) (c) Find (g *f)(x). (Simplify your answer completely.) (D)

    asked by Maya

  110. geometry

    If the area and perimeter of a right triangle are 30 cm2 and 30 cm, respectively, what is the length of the hypotenuse (the side opposite the right angle)?

    asked by amin

  111. Algebra

    Simplify ..... 1. the square root of the cube root of 49a^2z^4 2. the fourth root of (d-3e)^2 3. the square root of the the square root of 16b^12c^4

    asked by Kim

  112. Algebra

    True or False. 1. If q is negative, then the square root of q^2 = q. 2. If r is positive, then the square root of r^2 = -r.

    asked by Kim

  113. object oriented programming

    Write a program that takes as input the salesperson’s name, expected weekly sales and the number of hours worked then outputs the wages paid under each plan

    asked by indy
Back to July 2013