Questions Asked on
March 1, 2015

  1. Science

    One light bulb in a string of lights goes out this causes all other lights in string to go out. This is example of A. Resistor B. parallel circuit C. Closed circuit***** D. Series circuit When a switch is turned from the off to the on position it is

    asked by BUBBLES
  2. Life orientation

    1.distinguish between interpersonal and intrapersonal conflict? What are six symptoms of inrapersonal conflic?what are the link between intrapersonal conflict and initiating?clarify how intrapersonal conflict can lead to emotional stress?to what extent can

    asked by Dimpho
  3. health

    true or false. B cells and H cells are two important cells in the immune system that help fight infection i thinks its false The three lines of defense your body has against disease include all except A. physical and chemical defense B. inflammation C.

    asked by anonymous
  4. Life orientation.

    What extent can intrapersonal conflict affect choice of a career.

    asked by Koketso
  5. statistics

    Fewer young people are driving. In 1983, 87 percent of 19 year-olds had a driver's license. Twenty-five years later that percentage had dropped to 75 percent (University of Michigan Transportation Research Institute website, April 7, 2012). Suppose these

    asked by soni
  6. math

    A spring is attached to the ceiling and pulled 12 cm down from equilibrium and released. The amplitude decreases by 17% each second. The spring oscillates 16 times each second. Find an equation for the distance, D the end of the spring is below equilibrium

    asked by jeff
  7. Algebra

    James has a board that is 3/4 foot long he wants to cut the board into pieces that are each 1/8 foot long how many pieces can James cut from the board

    asked by Juvia
  8. physics

    A car has a uniform velocity of 108km/h. How far does it travel in 1/2 min

    asked by Godspower
  9. Physics 1

    In recent years, scientists have discovered hundreds of planets orbiting other stars. Some of these planets are in orbits that are similar to that of earth, which orbits the sun (Msun = 1.99 × 10^(30) kg) at a distance of 1.50 × 10^(11) m, called 1

    asked by Skyler
  10. Trigonometry

    Sarah used her calculator to find sin125 degree. She wrote down sin125 degrees = -.57. How could Sarah recognize that her answer is incorrect?

    asked by O
  11. Impulse and Momentum

    A bullet of mass m is fired at speed v0 into a wooden block of mass M. The bullet instantaneously comes to rest in the block. The block with the embedded bullet slides along a horizontal surface with a coefficient of kinetic friction . What is the

    asked by Jennifer
  12. physics

    Grant accelerates a 1kg ball 5.0m/s2 horizontally. The vertical acceleration of the ball is zero. The force of gravity is the only external force acting on the ball other than the forces Grant exerts on it. a-How large is the horizontal force grant exerts

    asked by aaron
  13. ELA

    in the article " Letter From Jackie Robinson on Civil Rights " for short response 1 I cant find what African americans want to recive and the details that support it. and for short response 2 I cant find how president Eisenhower unknowingly crush the

    asked by Megan
  14. Life Orientation

    Show the link between intrapersonal conflict and initiating relationship?

    asked by Anonymous
  15. LIFE OR

    COMPARE FIVE THE WAYS THE SIMILARITIES AND THE DIFFERENCES BTWEEN NFSAS AND OTHER STUDENT IOAN

    asked by MARVIN
  16. Chemistry Need Help

    How many grams of baking soda, NaHCO3, are needed to react with 125 mL of stomach acid having an HCl concentration of 0.05984 M? The reaction is NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l). Do I need to chenage mL to L first? I'm really stuck with

    asked by christine
  17. chemistry

    The standard enthalpy of formation at 298k for ccl4,h2o,co2,hcl are -22.5,-57.8,-94.1 and-22.1 kcal/mol.calculate ▲rH FOR reaction ccl4+2h2o→co2+HCL

    asked by rakesh dhakal
  18. physics

    A seesaw has a mass of 30 kg, a length of 3.0 m, and fulcrum beneath its midpoint. It is balanced when a 50-kg person sits on one end and a 65-kg person sits on the other end.Locate the center of mass of the seesaw (a distance from the 50-kg person)

    asked by clay
  19. life orientation

    To what the extent can inttrapesonal conflict affect communication in arelationship, choice of career and job performance when employed

    asked by kgeko
  20. Math

    When adding the square root of 16 and -8 which type of number is the sum? A. Integer B. Irrational number C. Radical D. Whole number

    asked by urgent please help
  21. History

    What does Truman mean when he claims, "Should we fail to aid Greece and Turkey in this fatal hour, the effect will be far reaching to the West, as well as t the East"?

    asked by Molly
  22. Statistics

    How many different 9 letter code words can be made using the symbols %%%% &&& ++

    asked by Anonymous
  23. Impulse and Momentum

    A 1400-kg car traveling east at 25m/s collides with a 1800-kg car traveling at a speed of 20m/s in a direction that makes angle of 40degree south of west. The cars stick together after the collision. What is the magnitude and direction of the velocity of

    asked by Jennifer
  24. chemistry

    CH4+2O2----------CO2+2h2O Use this balanced equation to calculate the mass of water formed when 32g of methane burns

    asked by Victoria
  25. physics

    a jeepney from rest accelerates unit fromly covers the time 3.25s. and covers in 15m. Determine the acxeleration of jeepney

    asked by azihr
  26. Chemistry

    The rate constant for the decomposition of gaseous azomethane, C2 H6 N2 (g) > N2 (g) + C2 H6 (g) Is 40.8 min-1 at 425OC. Find the number of moles azomethane and the number of moles of nitrogen 0.0500 minutes after 2.00 g of azomethane is introduced. Assume

    asked by Mahnoor
  27. Chemistry

    Calculate the heat of reaction (ΔHrxn) for the following reactions, using heats of formation (ΔHf). Show your work. Refer to a table of heats of formation in your textbook as needed. 5O2(g) + 4NH3(g) → 6H2O(g) + 4NO(g)

    asked by Morgan
  28. chem

    Write the equilibrium expression for the following: 2NOCl (g) ==== 2 NO + Cl2 (g)

    asked by Steph
  29. Life Orientation

    By means of a pratical example, describe the conflict that exists between the SHOULD and the WANT as discussed in the source above?

    asked by Codesa
  30. Social Studies

    10.Which Piece Of Evidence Supports a Loosening of Islamic Tradition In saudi Arabia? A)The Hijab B) Five Pillars C)Women Politicians D)Prayer Outside The home I Say B) Five pillars

    asked by Valerie
  31. Statistics

    Suppose that the distance of fly balls hit to the outfield (in baseball)is normally distributed with a mean of 250 feet and a standard deviation of50 feet. a. If X = distance in feet for a fly ball, then X ~ _____(_____,_____) b. If one fly ball is

    asked by Gail
  32. Algebra II

    From 1990-1994 the mail order sales of health products can be modeled by S= 10t^3+115t^2+25t+2505 where S is the sales (in millions) and t the number of years since 1990. In what year were about $3885 million health products sold.

    asked by .
  33. geography

    social, political, and economic changes made under the tokugawa shogunate

    asked by rosie
  34. Statistics/check answer

    If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64

    asked by slomomo
  35. Social Studies

    What is the Indian Ocean Basin? Is it just a trade route name like the silk roads? Thank you

    asked by Deyves
  36. chem

    The solution of known concentration to use to evaluate Z was prepared as follows: 2.00mL of 0.00201 M KSCN and 18.0 ml 0.200 M Fe (NO3)3. Assume that all of the SCN- has been converted to Fe(SCN)2t in this solution. Fe3+ SCN- ==== Fe Fe(SCN)2+ I don't

    asked by Steph
  37. science

    A sandbag falls from a hot air balloon that is rising with a constant velocity of 15m.s 1)What is the acceleration of the bag the moment it fell from the hot air balloon? 2)What is the acceleration of the hot air balloon the moment the sandbag fell from

    asked by PHYSICS
  38. soc. 120

    Which statement represents a utilitarian viewpoint about the legality of !@#$%^&ography? (Points : 1) !@#$%^&ography harms people who participate in it. !@#$%^&ography demonstrates the virtue of sex. !@#$%^&ography serves to enhance the enjoyment of a

    asked by Anonymous
  39. modern physics

    a hunter on the ground fires a bullet in the northeast direction which strikes a deer 0.25 metre away from him, the bullet travel with a speed of 1800m/hr.at the instant an airplane is directly over the hunter at an altitude of one metre and is traveling

    asked by martin
  40. algebra

    Jorge is painting a rectangular mural. Its length is 2 ft less than twice its width. Its area is 264 ft2. Find the dimensions of the mural.

    asked by someone
  41. Chemistry

    A standard KHP solution is made by dissolving 2.12 grams of KHP in 100.00 mL of water. The KHP solution is then titrated with NaOH solution. It takes 23.12 mL of NaOH to reach the endpoint. What is the concentration of the NaOH?

    asked by Anonymous
  42. Criminal Justice/Probation & Parole

    The defendant's rap sheet: A. cannot contain any abbreviations. B. is the arrest record of the defendant. C. always includes the disposition of any arrests. D. typically describes each offense and whether it is a felony or misdemeanor. I think it's B, but

    asked by Pat
  43. Chemistry

    You have 23.0g of water initially at -46°C. How much energy in joules is required to heat the ice to 0°C? c ice = 2.1 J/g°C. I thought joules was calculated by grams*change in temperature*specific heat. The answer I get from 23*46*2.1 is 2221.8, but web

    asked by Harrison
  44. statistics

    In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garic in a processed tablet form. Cholesorol levels were measured before and after the treament. the changes in their levels of LDL cholestorol (in mg/dL have

    asked by slomomo
  45. business math

    Workers who manufacture shirts are sometimes paid based on the number of shirts they produce. Compute Lyle's gross pay if she made 380 shirts. The rate per shirt is given by the differential piecework schedule below: Pay Level Items Produced Rate per Item

    asked by trieu
  46. physics

    a block of ice slides down a 45degree inclined plane in twice the time it takes to slide down a 45degree frictionless inclined plane. what is the coefficient of kinetic friction between the ice block and the plane?

    asked by Anonymous
  47. math

    Adam wants to compare the fraction 3/12, 1/6, and 1/3 he wants to order them from least to greatest and rewrite them so they all have the same denominator

    asked by Anonymous
  48. Organic Chemistry

    How to find the crude percent, percent recovery, and percent composition of benzoic acid and acetanilide if 2 grams of a mixture of benzoic acid and acetanilide was separated through separatory funnel and recrystallize and purified, but only 0.7g of

    asked by Siannah
  49. Impulse and Momentum

    In the game of billiards, all the balls have approximately the same mass, about 0.20 kg. The cue ball moving west with a speed of 4.5m/s strikes another ball at rest. After the collision the cue ball moves at an angle of 55degree north of west and the

    asked by Jennifer
  50. Physics

    The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck over a distance of 870 m. What is the work done by this force on the truck?

    asked by Chris
  51. chemisty

    The initial concentration of NO2 in a closed container is 0.750M. At equilibrium the concentration of O2 is 0.125M. What are the concentrations of NO2 and NO at equilibrium? 2NO2 (aq) ==== 2NO (aq) + O2 (aq)

    asked by S
  52. soc 120

    Which of the following examples best demonstrates to most people that ethical progress has taken place over the past 200 years? (Points : 1) Laws that prohibit discrimination based on race Laws that have increased speed limits Laws that prevented women

    asked by Anonymous
  53. Chemistry

    Discuss how your supernatant color in the 6 different test tubes supports your calculated result in #2. For example, if you used less than the volume of sodium phosphate calculated in #2, what would be the limiting reactant and does the observed

    asked by Chem
  54. science

    what is the balanced chemical equation for (NH4)2SO4 + CuSO4.5H2O?

    asked by Bonga
  55. math

    A cow is tethered by a piece of rope 50 meters long to the side of a rectangular barn. The rope is fastened to a hook (on the barn) that is located 20 meters from the corner along the longest side of the barn which measures 70 meters by 20 meters. Over how

    asked by Zunie
  56. accounting

    Shastri Bicycle of Bombay, India, produces an inexpensive, yet rugged, bicycle for use on the city’s crowded streets that it sells for 767 rupees. (Indian currency is denominated in rupees, denoted by R.) Selected data for the company’s operations last

    asked by Anonymous
  57. Geometry

    A survey showed that 23 % of college students read newspapers on a regular basis and that 82 % of college students regularly watch the news on TV. The survey also showed that 21 % of college students both follow TV news regularly and read newspapers

    asked by Anonymous
  58. Trigonometry

    5. A backpacker notes that from a certain point on level ground, the angle of elevation to a point at the top of a tree is 34o. After walking 50 closer to the tree, the backpacker notes that the angle of elevation is 54o. Find the height of the tree.

    asked by Marla
  59. physics

    a block of ice slides down a 45degree inclined plane in twice the time it takes to slide down a 45degree frictionless inclined plane. what is the coefficient of kinetic friction between the ice block and the plane?

    asked by ogba
  60. english

    The story of a disabled athlete who became well known :narrative story

    asked by jacqueline
  61. soc

    Which statement represents a utilitarian viewpoint about the legality of !@#$%^&ography

    asked by Anonymous
  62. Chemistry

    Question 2: Use your balanced equation to calculate the volume of 0.12 M Na3PO4 to stoichiometrically react with the 3.0 mL of Co (NO3)2. Show your work. 3) Discuss how your supernatant color in the 6 different test tubes supports your calculated result in

    asked by Question
  63. Math

    Evelyn rolled two 1-6 cubes 72 times. How many times should she predict she will roll a sum of 5?

    asked by Anonymous
  64. Chem

    Using the Absorbance (0.455) of your Unknown SCN- solution and the slope (3163.9) from your Calibration Curve, calculate the concentration of SCN- in the solution created from 5.0 mL 0.200 M Fe(NO3)3, 40.0 mL H2O and 5.0 mL SCN-. How would I calculate?

    asked by Mark
  65. AP Calc

    find the area in the first quadrant bounded above by y=sinx, below by the x-axis, and to the right by x=pi/2 is divided into two equal parts by the line x=a. Find a.

    asked by Josh
  66. chemistry

    To interpret and compare heats of reaction (Hrxn), standard states must be used. What are the standard states for a gas, an aqueous solution, and a pure substance? Why are they important?

    asked by Morgan
  67. Physics

    A baseball pitcher delivers a fastball that crosses the plate with an angle of 7.89 degrees relative to the horizontal and a speed of 87.5 mph. The ball (mass 0.145 kg) is hit back over the head of the pitcher at an angle of 38.03 degrees with respect to

    asked by Kathy
  68. Physics

    An unstable nucleus with a mass of 18.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 10-27 kg, moves along the positive y-axis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕

    asked by Betty
  69. statistics

    The life spans of three randomly selected tires are  28,100  miles,  37,900  miles, and  33,000  miles. Using the empirical rule, find the percentile that corresponds to each life span.

    asked by Anonymous
  70. maths lit,civil technology,egd,physical science

    Can i possibly be accepted for land surveyor if am doing these subject

    asked by neliswa
  71. math

    Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 3 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)

    asked by Noah
  72. Chemistry

    How much milk at 10.00°C needs to be added to a small 150.0 ml cup of coffee at 95.00 °C to drop the temperature to 90.00°C? Assume coffee and milk have the same specific heat capacity as water: 4.186 J/g °C or 1 cal/ g °C, and they also have the same

    asked by Phil
  73. Criminal Justice/Probation & Parole

    In New York, residential burglary during the day is a/an __________ even in the absence of the possession of a weapon or an encounter with an occupant. A. "instant" offense B. "non-violent" offense C. "adjudication" offense D. "violent" offense I think

    asked by Pat
  74. calculus

    Plot three points with first coordinate equal to (-2.8) and join them

    asked by hadasha
  75. Math

    find the area in the first quadrant bounded above by y=sinx, below by the x-axis, and to the right by x=pi/2 is divided into two equal parts by the line x=a. Find a.

    asked by Jacob
  76. Algebra 2 Honors

    Hi, I'd like some help with one of the questions on my math homework. It has to do with a right triangle. I'm not sure how to set it up or if I should use the pythagorean theorem. This is the question: Vista county is setting aside a large parcel of land

    asked by Spectrum
  77. math

    A retailer planned to buy some computers form a wholesaler for a total of Shillings 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shillings 4,000. This reduction in price enabled the retailer to buy five more

    asked by OJ
  78. Chemistry

    Procedure 0) The sodium phosphate, Na3PO4 solution has NPFA ratings of 1 (out of 4) for health, 0 for fire, and 0 for reactivity. Cobalt (II) nitrate has 2 for health, 0 fire, and 0 for reactivity. 1) Carefully label (1-­‐6) and weigh 6 small test

    asked by Chem
  79. algebra

    Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,

    asked by please help me
  80. Chemistry

    Answer these questions about NaCl also known as table salt: 1. What is the name of the compound? 2.Are there any other names that it is known by? If yes, then please list them. 3.What is the chemical formula of the compound? Is it an ionic or covalent

    asked by Rea
  81. chemistry

    Given the following balanced chemical equation, if 15.4 g AgNO3 are reacted, how many moles of AgCl are produced? 2 AgNO3 + BaCl2 → 2 AgCl + Ba(NO3)2

    asked by anna
  82. Math

    A Kenyan businessman bought goods from Japan worth 2, 950 000 Japanese yen. On arrival in Kenya custom duty of 20% was charged on the value of the goods. If the exchange rates were as follows: 1 US dollar = 118 Japanese Yen 1 US dollar = 76 Kenya shillings

    asked by OJ
  83. soc.

    The paradox of tolerance leads to which difficulty

    asked by Anonymous
  84. math

    the flour power bakery makes 200 cherry cheesecakes at a cost of $2.55 each. if a spoilage rate of 3% is anticipated, at what price should the cakes be sold to achieve a 35% markup based on cost?

    asked by stephanie
  85. AP Calc

    The curve y=x^3 intersects the line y=7x-6 at three points, (-3,-27), (1,1), and (2,8). Find the total area bounded by y=x^3 and y=7x-6.

    asked by Isaac
  86. Physics

    A worker pushes horizontally on a 25 kg crate resting on ground level. The coefficients of static and kinetic friction are 0.4 and 0.3.? a) How much force must he apply to start the crate moving? b) After the crate has stereo moving, how much force must he

    asked by Ashley
  87. Criminal Justice/Probation & Parole

    The PSI: A. is based on the concept of parens patriae. B. is required in all felony cases. C. reflects classical school interest in the offender. D. None of the above I don't see A,B,C, in my textbook, so I am assuming it's D. Am I right?

    asked by Pat
  88. Physical Sciences

    A diagram shows a rope and pulley arrangement of a device being used to lift an 800 N object.Assume that the roped are light and inextensible and also that the pulley is light and frictionless.

    asked by Simphiwe Nanto
  89. Writing Skills Part 3

    1.Under the Library of Congress system,where would you begin to search for books on the legal system of Greece? A.E B.k C.U [D.G] 2.If a source is reasonable,we know A.The information offered up-to-date,factual detailed,and precise. [B.We can trust and

    asked by Samantha
  90. Math

    Winona needs to average 5.8 points from 14 judges to win the competition. The mean score of 13 judges was 5.9. What is the lowest score she can receive from the fourteenth judge and still win? I have no idea. Please help. Thanks

    asked by Alexandria
  91. English

    Did I do this correctly for realism in A Raisin in the Sun? 1. Walter : "A job. (Looks at her) Mama, a job? I open and close doors all day long. I drive a man around in his limousine and I say "Yes, sir; no sir ; very good sir; shall I take the Drive, sir

    asked by Notafanofschool
  92. chemistry

    What volume of ammonia gas at STP is required to neutralize 40 cubic centimetres of 2 Molar sulphuric acid?

    asked by Czar
  93. Physics

    What is the final temperature reached by the addition of 11.4 grams of steam at 100C to 681 grams water at 25C in an aluminum calorimeter having a mass of 781 grams? C of water=1 cal/gc C of aluminum= 0.22 cal/gc L steam= 540cal/g My Attempt Qloss=Qgain

    asked by Help2
  94. algebra

    Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,

    asked by dumb boy
  95. Statistic

    A quiz consists of 10 multiple-choice questions. Each question has 5 possible answers and only one of them is correct. A student has not studied for the quiz and will pick his answers randomly. 1)Define the random variable x that will be used for problem,

    asked by Amriajasmine
  96. Accounting

    Beginning work in process inventory 17,000 40%. Transferred in from the prior department 72,000. Ending work in process inventory 18,000 30% According to the company records the conversion cost in the beginning work in process inventory was $63.104 at the

    asked by Bella
  97. Math

    Pick any single digit number. Multipy it by 12,345,679. Then multiply the result by 9. What happens? Explain why this works.

    asked by Erika
  98. Chemistry

    What is the magnitude of the orbital velocity of the earth when the radius of the earth's orbit around the sun is 150000000?

    asked by Flora
  99. AP Calc

    The curve y=x^3 intersects the line y=7x-6 at three points, (-3,-27), (1,1), and (2,8). Find the total area bounded by y=x^3 and y=7x-6.

    asked by Isaac
  100. Math

    The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.

    asked by Luke
  101. Calc

    Find the area in the first quadrant bounded by the curve y=(9-x)^1/2 and the x- and y-axis.

    asked by Max
  102. math

    The longest side of a triangle is six more units that the shortest side. The third side is twice the length of the shortest side. If the perimeter of the triangle is 25 units, write and solve an equation to find the length of all three sides of the

    asked by Valdo
  103. Math

    A student scores 74 out of 100 on a test,If the maximum score is 100. What score does the student need at least an average of 80?

    asked by Angie
  104. chemistry

    The equilibrium concentration of NOCl = {0.0610}, NO = [0.0151, and Cl= [0.0142, what is the value of the equilibrium constant? Don't really get how to figure this out..anyone know? Thanks!!

    asked by S
  105. chemistry

    1. Outline how you would use a calorimeter to determine the enthalpy of fusion of ice. 2. Suppose the enthalpy of fusion of ice determined from your experiment is lower than the accepted value. List three possible causes of the difference in value. Explain

    asked by Morgan
  106. math

    Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,

    asked by Kid with help fast
  107. Algebra

    (16x^5*y^10/81xy^2)^(3/4) please explain how to do this, I am at a complete loss

    asked by Jake
  108. chemistry

    You have 14.0mL of a 0.12M NaOH solution. How many moles of HCl will it take to neutralize this solution?

    asked by Savannah
  109. Chemistry

    Use your balanced equation to calculate the volume of 0.12 M Na3PO4 to stoichiometrically react with the 3.0 mL of Co (NO3)2. Show your work.

    asked by Chem
  110. Physics

    A model helicopter and its load have a combined mass of 3.5 kg. Find the upward average force, in Newtons, exerted by the air if the helicopter is originally moving downward at 10 m/s and is brought to rest with constant acceleration in a distance of 50 m.

    asked by wayne
  111. math

    P (5,) and Q (-1, 2) are points on a straight line. Find the equation of the perpendicular bisector of PQ: y = mx+c

    asked by kudu
  112. Physics

    There is an 8 meter tall hill with a circular radius of 20 meters. What is yhe minimum speed a car needs to momentarily lose contact with the road?

    asked by Valerie
  113. math

    a object that is 3.9 feet tall cast a shadow that is a 11.7 feet long. how long in feet would the shadow be in feet if the object is 16.5 feet tall

    asked by tameka
  114. please help me guys physical sciences

    1.an engine develops 65kW over a period of 20minutes. The engine uses 5kg of petrol. Calculate the following:- A. The heat gegenerated B. The power generated by the petrol C. The efficiency Of the engine 2.A square steel plate with sides of 12cm long, is

    asked by Bettina
  115. math

    The gradient of the tangent to the curve y= ax^3 + bx at the point ( 1, 1) is -5. Calculate the values of a and b

    asked by kudu
  116. math

    How can I solve the diagonal of a cube with a formula of s square root of 3, if the given is csc x = 2 ? how will i solve for the side of the cube to get its diagonal?

    asked by Ammiel
  117. Physics

    A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 80 cm and is wound around the top at a spot where its radius is 2.0 cm. The thickness of the string is negligible.

    asked by Cass
  118. Physics

    A 7.5 kg box is on a table. What is the normal force acting on the box in each of the following situations? a) You leave the box alone. b) You push down on the box with a force if 20 N. c) You pull up on the box with a force of 20 N.

    asked by Ashley
  119. Calculus

    Find the area of the bounded region by the graph of x=2y-3 and x=y^2-2y in two ways (i) using x axis as refrence y axis (ii) using y axis as refrence x axis

    asked by Akki
  120. Chemistry combined gas law

    Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2

    asked by Theresa Kwnt
  121. Math Calculus (ALEVEL)

    Find the equation of the tangents to the curve x^2+3x-2y^2=4 at the points where the curve crosses the x- axis

    asked by Anonymous
  122. Calc

    Find the area in the first quadrant bounded by the curve y=(9-x)^1/2 and the x- and y-axis.

    asked by Max
  123. English

    What is an example of a sentence using the following pair of antonyms. 1, deficiency and surplus 2. replenished and emptied 3. alleviate and increase

    asked by Hayley
  124. Math

    The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 125 and a variance of 25. The material is considered defective if the breaking strength is less than 113.5 pounds. What is the probability that a single,

    asked by Denise
  125. physics

    A bug starts walking away from the top of a spherical ball of ice and will start to slip when the normal force exerted on it drops to 1/2 of its weight. If the ice ball has a diameter of 34 cm, how far can the bug walk before it begins to slip?

    asked by wayne
  126. chemistry

    What is the ph of 0.25 M tartaric acid? Ka=2.5*10^-5M

    asked by brad
  127. CHemistry

    What is the pH of the resulting solution when 0.20 mole of NaF and 0.05 mole HCl are added to 100 mL water? The Ka for HF is 3.95x10^-4M

    asked by Mike
  128. physics

    Why do you think the wave aspect of light was discovered earlier than its particle aspect?

    asked by Channing
  129. Business

    Human Resource Essay?

    asked by selokela monyeki
  130. tablun elementary school

    the side of a square is 7x - 8y cm. what isthe area?

    asked by althea
  131. Math

    A Major League Baseball team has won 15 of its first 27 games. The team will play 162 games. At its current rate of winning, how many games will the team win?

    asked by Sonic
  132. Calculus

    Find out the partial derivative w.r.t 'x' and 'y' of f (x,y) = log(y) x Now, log(y) x = ln x / ln y Partial Diff w.r.t 'x' = 1/ x ln y so can you find out what will be the partial derivatives w.r.t 'y'

    asked by Akki
  133. Physics

    A group of soldiers hid at the bottom and against the wall of a 100 m. high cliff. Unknown to them, the Evil rebels have positioned a cannon on top of the cliff; 8,000 m. from the edge. If the cannon has a muzzle speed of 320 m/sec, how close to the bottom

    asked by akocciara
  134. Maths

    calculate the difference between the compound interest and the simple interest on R2000000 at 6% p.a. after 3 years

    asked by nonopa Athi
  135. physics(urgent answer pls)

    A projectile is launched with 30m/s at an angle of 60degree with d horizontal (a) find d position of the projectile,and d magnitude and direction of its velocity at t=2s (b) find d time when d ball reaches the highest point (c) find d horizontal range

    asked by ben
  136. mohale

    Kwaito enrolled at university of johannesburg, his family gives him a pocket money that doesn't last for a month. So he decided to work at Ramodumo car wash next to his campus to make extra cash. A car wash agrees to pay him R55.00 per day and extra R10.00

    asked by wisdom
  137. Math

    Find the first five terms: a sub n = 2^n - 5 -3, -1, 3, 11, 27?

    asked by Anonymous
  138. Math

    Find the first 5 terms. a sub 1 = 4 and a sub n = 0.5a (sub n - 1) + 1 1.5, 2, 2.5, 3, 3.5

    asked by Anonymous
  139. math

    a traffic sign casts a shadow 6ft long while a mailbox next to it casts a shadow 3ft long. if the traffic sin is 7 ft high how tall is the mailbox

    asked by Jill
  140. Geometry

    Write the equation of a circle given the following: Diameter measures 15 units and the center is at the intersection of y =x + 7 and y= 2x-5

    asked by Frank
  141. statistics

    Suppose for the same 3000 women, we also measured their weight. Suppose the data were again normally distributed. The average weight is 143 lbs., and the standard deviation is 30 lbs. Suppose the correlation between height and weight is r = +.69. What is

    asked by marie
  142. English

    What are the values (negative) being taught in this advertisement? The advertisement is trying to sell a military style watch. In the advertisement there are two armed soldiers in the background and appear to be situated in a war zone area. I am able to

    asked by Marcus
  143. Chemistry

    When 50.00 mL of an acid with a concentration of 0.214 M (for which pKa = 4.87) is titrated with 0.100 M NaOH, what is the pH at the equivalence point?

    asked by Anonymous
  144. applying fundamental concepts

    Robby uses his knowledge of how many marbles fit in a scoop to predict how many marbles will fill a jar. This concept is known as A. chunking. B. counting on. C. guessing. D. seriation. my answer is b.

    asked by lauren
  145. algebra

    I an taking a pre test and I can't figure this question out at all--- 56x^7+21x^4+63^3

    asked by Debbie
  146. Math

    The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.

    asked by Ian
  147. physics

    A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is his horizontal

    asked by aaron
  148. Physics

    A 24.8-g bullet is fired from a rifle. It takes 2.15 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 778 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted

    asked by Chris
  149. math

    Option A $5.75 for each visit Option B Yearly membership for $99, plus $.50 for each visit write an inequality that can be used to determine the minimum number of times a person would need to visit the gym in a year in order for option B to be less

    asked by jill
  150. Chemistry

    If I have 50.0 mL of HA at a concentration of 1.20M and 50.0 mL of NH4OH at a concentration of 0.92M, how many moles of the limiting reactant are there? I guess I should start with a balanced equation, but I have no idea where to start..

    asked by Sara
  151. Chemistry combined gas law

    Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2

    asked by Theresa Kwnt
  152. Quick chemistry help

    Please help with these two problems! 1. 566g of C12H22O11=______ C atoms 2. 12 molecules chlorine gas= ________ atoms of Cl

    asked by Anonymous
  153. Business

    How much influence do stock holders likely to have over a management of the conglomerate or one of its company?

    asked by Chervon
  154. science

    Na2 SO4 + Ca Cl----> Ca SO4 +Na Cl

    asked by tyler
  155. biology

    Hello, I got this question wrong on a homework assignment and I still can't find the correct answer. The reduction of the chromosome number during meiosis is most important for: 1: keeping the amount of DNA in the cell at a minimum level. 2: allowing the

    asked by Tony
  156. funfamental concepts

    Robby uses his knowledge of how many marbles fit in a scoop to predict how many marbles will fill a jar. This concept is known as A. chunking. B. counting on. C. guessing. D. seriation. my answer is I think d.

    asked by lauren
  157. soc.

    Justice Potter Stewart would most agree with which claim about obscenity

    asked by Anonymous
  158. English

    1. Write sentence using obscured and revealed. 2. Sentence using compulsory and optional. 1. Heavy brush had totally obscured the entrance until someone cut away the branches and the entrance was revealed. 2. If your child hasn't met the compulsory

    asked by Hayley
  159. english

    A disabled athlete who became well known

    asked by jacqueline
  160. physics

    A particle moves half distance by 20 m/s and stay half distance moves by 30 m/s. Average speed of total journey should be?

    asked by Pradeep
  161. english

    Guys your source was good can you give another Web to search about Natalie Du toit

    asked by jacqueline
  162. science

    a particle 100g attach with a horizontal spring moving s.h.m.with amplitude 5cm .when this particle is passes through mid point a small particle placed on it then both moving s.h.m.with amplitude 4cm.find the mass of small particle .

    asked by Jamal
  163. Math

    Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the x-axis.

    asked by Jake
  164. math

    A town N is 340 km due west of town G and town K is west of town N. A helicopter Zebra left G for K at 9.00 a.m. Another helicopter Buffalo left N for K at 11.00 a.m. Helicopter Buffalo traveled at an average speed of 20 km/h faster than Zebra. If both

    asked by kudu
  165. Writing - APA

    For writing in APA and your table goes on two pages, do you just repeat the table header rows? I already titled the table on the first page.

    asked by MJ
  166. math

    there are 3 numbers, a,b and c. the sum of a and b is 15.31 , the sum of b and c is 9.54,and the sum of a and c is 5.15. find the sum of a,b and c.

    asked by vic
  167. international business

    If a country only exported products/services, would this be a good or bad thing?and vice versa?

    asked by rimsha
  168. Calculus

    (1/sqrt(1-(3x/4)^2) * 3/4

    asked by Sandra
  169. math

    16000000=10r-r^2. Calculate the maximum value of r.

    asked by vizzy
  170. Mathematics

    An isosceles triangles, such that the vertical angle is 4times the size of the base angle.what is the size of the base angle with illustration

    asked by Tina
  171. AP Calc

    Find the volume of the solid generated by rotating the region bounded by the graph of y=x^2, y=0, x=1, and x=3 about the line parallel to the x-axis and one unit below it. Please help I have no idea how to solve this problem.

    asked by anonymous
  172. Math

    Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the x-axis.

    asked by Jacob
  173. math

    vani scores 90% in 5 subjects and veena score 80% in 4 subjects who scores more?

    asked by arnav
  174. math

    if you 99 lines on a piece of paper so that no two lines are parallel to each other and mo three lines pass through the same point,how many times will they intersect?

    asked by tebatso
  175. Math

    x^3-x^2-36x+36=0

    asked by Lizzy
  176. physics

    A projectile is launched with 30m/s at an angle of 60degree with d horizontal (a) find d position of the projectile,and d magnitude and direction of its velocity at t=2s (b) find d time when d ball reaches the highest point (c) find d horizontal range

    asked by tolu
  177. english

    Disabled athlete .I mean their names and what they do

    asked by jacqueline
  178. sociology 120

    Justice Potter Stewart would most agree with which claim about obscenity? (Points : 1) It is easy to concretely determine what obscenity is. People can intuitively understand what obscenity is. Obscenity ought to be allowed so long as no one is harmed.

    asked by stan
  179. math

    A couple can afford to make a monthly mortgage payment of $850. If the mortgage rate is 2% and the couple intends to secure a 30-year mortgage, how much can they borrow? (Round your answer to the nearest cent.)

    asked by amanda
  180. math

    write an equation where the perimeter is 64 and the length is 4 less than twice the width

    asked by GAA
  181. algebra

    A store sold 60 DVDs. Some of these were on sale and sold for $4.95 each, while the rest priced at $5.95 each. If the sales receipts for DVDs at the end of the day totaled $317.00, how many of each type were sold?

    asked by emily
  182. Math

    Joe has to coins in his pocket that total $.55 one corn is not a nickel what are the coins

    asked by Anonymous
  183. math

    Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0 Find: cosx tanx

    asked by kudu
  184. law/521

    doing paper on breach of data from target I don't understand the legal concepts that applied within a business managerial setting I know about the target part but not the rest

    asked by A
  185. math

    solve (1+x)^2d^y/dx^2+(1+x)dy/dx+y=4cosh(x+1)

    asked by assma
  186. english

    What are the values (negative) being taught in this advertisement? The advertisement is trying to sell a military style watch. In the advertisement there are two armed soldiers in the background and appear to be situated in a war zone area. I am able to

    asked by Marcus
  187. math

    If you 99 lines on a piece of paper so that no two lines are parallel to each other and no three lines pass through the same point, how many times will they intersect?. Show all your calculations leading to the answer

    asked by thabang
  188. U.S. HISTORY

    besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?

    asked by laura
  189. math

    Solve 6k^2-17k-3=0

    asked by Lizzy
  190. Simultaneous equations

    3x-14y=O and x-4y+1=0

    asked by Lee
  191. English

    1. Which word is antonym of incessant? failing, brief or filthy brief

    asked by Hayley
  192. Phoenix

    b(t-7)=

    asked by Walker
  193. mohale

    Can you please help me with mathematics I have couple of question that I can't answer and I tried them still cat get the answer can you help?

    asked by wisdom
  194. Math

    Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x + 2y = 1 5x – 4y = -23

    asked by Lori
  195. math

    If r = 7 m then d = what c = what

    asked by jj
  196. gen chem

    What is the ph of a soulution made by adding 0.20 mole NH3(aq) to 0.30 mole NH4Cl and 0.10 mole KOH to 100ml of water? Kb for NH3 (aq)=1.8x10^-5M

    asked by nick
  197. Health

    health status of the Philippines??

    asked by Anonymous