Popular questions and responses by EMMANUEL
  1. math

    Chad buys peanuts in 2-pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2-pound bags of peanuts should Chad buy so that he can fill the 5/6-pound bags without having any peanuts left over?

    asked on January 15, 2014
  2. Physics

    A battery of three cells in series each of emf 2v and internal 0.5 ohms is connected to 2ohms resistor in series with a parallel combination of two 3ohms resistors (a)draw the circult diagram (b)the effective of external resistance (c)the current in the

    asked on November 23, 2010
  3. calculus

    h(t)=cot t a.) [pi/4,3pi/4] b.) [pi/6,pi/2] Find the average rate of change of the function over the give n interval and intervals. Please show step by step instructions. Thanks

    asked on August 27, 2017
  4. physics

    a body of mass 25kg moving at 3m/s on a rough horizontal floor is brought to rest after sliding through a distance of 2.5m on the floor. calculate the coefficient of sliding friction.

    asked on January 7, 2014
  5. Physics

    A projectile leaves the ground at an angle of 60degree to the horizontal.it initial kinetic energy is E. Neglecting air resistance, it kinetic energy at the highest point of the motion is

    asked on July 16, 2016
  6. Angles of elevation and depression

    The teet of two vertical poles of height 3m and 7m are in line with a point P on the ground. The smaller pole being between the taller pole and P and at distance of 20m from P the angle of elevation of the top T of the taller pole from the top R of the

    asked on June 6, 2017
  7. home economics

    what are the choices of career in home economics influence of orientation in home economics

    asked on May 27, 2010
  8. science

    A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second? 28m/s 27.8m/s 3.6x10^2m/s 1.0x10^4m/s

    asked on July 4, 2015
  9. chemistry

    how many unpaired electrons are in this configuration 1s2 2s2 2p6 3s2 3p3

    asked on January 18, 2017
  10. science

    3 identical point charges each one micro coulomb placed at vertices of an equilateral triangle 10cm apart calculate the force on each charge

    asked on March 22, 2016
  11. Math

    Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 15 hours, and on the trip back averaged 40 mi/h. She returned home 41 hours after leaving. How many miles is City A from City B?

    asked on September 7, 2015
  12. Mathematics

    . The three consecutive terms of an exponential sequence (G.P) are the second, third and sixth terms of a linear sequence (A.P). Find the common ratio of the exponential sequence.

    asked on May 5, 2016
  13. Science Help Not sure

    A traffic-safety engineer is designing a deceleration lane. She is basing the length of this lane on the distance needed to slow down from 126 km/h to 65 km/h in 8.0 s. How long will the deceleration lane be? A. 2.1 x 10^2 m B. 3.8 x 10^2 m C. 4.2 x 10^2 m

    asked on July 4, 2015
  14. Math

    Why did Airhead eat the dollar he brought to school

    asked on May 13, 2013
  15. phomolong secondary school

    i am a grade 11 learne,i cant choose the that is good for me from the following subject history,geography,life science,sepedi,life orientation,english,math literacy.

    asked on December 1, 2015
  16. pysics

    three identical point charges each Q coulombs are placed at the vertices of an equilatwral triangle 20cm apart.calculate the force on each charge

    asked on March 25, 2017
  17. Science Help Not sure

    Within the Gaetz Lake Sanctuary in Red Deer, Alberta, is a looped trail that is 4 km long. Suppose a person walked all the way around the looped trail in 1 h, ending where he or she started. Which statement best describes this person’s motion over this

    asked on July 4, 2015
  18. Archimedes principle

    An iron piece of mass 360g and a density of 6g/cm^3 is suspended by a rope so that is partially (halfway)in oil of density 0.9 g/cm^3.Find the tension (force) in the string.

    asked on July 26, 2017
  19. Physics

    How do i determine the mass of ice initially in the calorimeter when dry saturated steam is passed into 250g of a mixture of ice and water in a calorimeter of thermal capacity 45J/K when all the ice has just melted,and the mass of the content in the

    asked on March 4, 2012
  20. physics

    a car travels at uniform velocity of 20m/s for 5 seconds, the breaks are then applied and the car comes to rest with uniform retardation in further 8 seconds. draw a graph of velocity against time.How far does the car travel after the breaks are applied.?

    asked on June 9, 2015
  21. Physics

    A uniform beam 6m long weighing 4kg rests on supports p and q placed left and right 1metre from each end of the beam. Weight of mass 10kg and 8kg are placed near p and q respectively one each end of the beam. Calculate the reactions at p and q.

    asked on November 18, 2018
  22. algebra

    A florist plans to make 5 Identical bridesmaid bouquets for a weeding. She budgeted £ 610 and she want to 24 flowers for each bouquet. She want to use three types of flowers namely; roses, tulips and lilies . A survey of prices shows roses cost £6,

    asked on April 7, 2018
  23. Math

    In a circle of radius 12cm a chord is drawn 3cm from the centre. Find the angle subtended at the centre

    asked on June 23, 2019
  24. Science

    1.The sound from a bolt of lighting travelled 4.08km in 12.0s. whats was the spped of the sound in metres per second? 0.340m/s 49.0m/s 340m/s 343m/s 2.A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second? 28m/s

    asked on July 4, 2015
  25. chemistry

    calculate the percentage by mass of silicon tetrachloride

    asked on February 14, 2019
  26. phy 101

    if he travels 7km N 30 degree E and 10km east find the resultant displacement

    asked on April 20, 2017
  27. Science

    A skydiver steps out of a helicopter hovering thousands of metres above ground. After 3.5 s of free fall the skydiver pulls the rip cord. What is the skydiver’s displacement during the 3.5 s of free fall?

    asked on July 4, 2015
  28. Chemistry

    Calculate the volume of carbon 4 oxide gas at s.t.p when 5g of zinc trioxocarbonate is heated strongly.

    asked on October 15, 2018
  29. chemistry

    60 cm of hydrogen diffused through a porous membrane in 10 minutes. The same volume of gas G diffused through the same membrane in 37.4 minutes. Determine the relative molecular mass of

    asked on June 30, 2016
  30. computer simulation

    A grocery store has three checkout lanes (checkout 1, 2, and 3), each with a single checker. Shoppers arrive at the checkout area with interarrival times having an exponential distribution with mean 2.4 minutes. The shoppers enter the lane that has the

    asked on December 9, 2015
  31. Mathsw

    A man 6 feet tall is standing 9 feet from a 18 feet tall light pole. His shadow cast 15 degree. What is the angle formed from this equation?

    asked on July 27, 2012
  32. Science

    which of the following is not scalar quantity. 0.20m 5.0m/s 10.0m/s[E] 110km/h

    asked on July 3, 2015
  33. Science

    9. The Pleistocene Epoch, from 1.7 million years ago to 10 000 years ago, was marked by A. a lack of oxygen B. the presence of warm, tropical seas C. the southern movement of the North American continent D. the formation of glaciers that covered parts of

    asked on July 9, 2015
  34. Math

    A commuter plane flies from City A to City B, a distance of 90 mi due north. Due to bad weather, the plane is redirected at take-off to a heading N 60° W (60° west of north). After flying 57 mi, the plane is directed to turn northeast and fly directly

    asked on March 9, 2017
  35. Math

    An american car travels 32 miles on one gallon. A European car travels 12.7 kilometers on one liter of gas. Wich car gets better gas mileage? Explain your reasoning.

    asked on February 12, 2019
  36. Chemistry

    A is a solution of trioxonitrate (V) acid. HNO of unknown concentration B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion solution B required an average of 24.00cm3 of solution A for neutralization. Using 2 drop

    asked on June 6, 2018
  37. Science

    A baseball flew 19.6 m straight up into the air after being hit by a bat. How long should it take for the ball to return from its maximum height? A. 1.02 s B. 1.91 s C. 2.00 s D. 3.99 s

    asked on July 4, 2015
  38. 0.5mols of a monoalkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

    0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

    asked on October 12, 2016
  39. science

    A measuring cylinder contains 50cm`3 of water.A stone has a mass of 1.75g.The stone is lowered into the cylinder, the level of the water rises to 52.5cm`3.Calculate the density of the stone

    asked on June 25, 2016
  40. math

    the electron beam in a television tube consists of electrons accelerated from rest through a potential difference of about 20000v.what is the speed of the electrons?(ignore relativistic effects).electron rest mass is 9.11 X 10^-31kg and electron charge is

    asked on October 25, 2015
  41. math

    The position of an object moving in a straight line is given by the function , where s(t) represents distance traveled and t represents the time the object has been in motion. How long (to the nearest tenth) will it take the object to move 17 meters?

    asked on March 24, 2014
  42. Chemistry

    A Metal X forms two different chloride. If 12.7g of chloride A and 16.3g of chloride B contains 7.1g and 10.7g of chlorine respectively, show that the figure agree with the law of multiple proportion. Write their formulae

    asked on January 27, 2019
  43. civic education

    in what ways can leaders promote the interest of their followers?

    asked on August 22, 2018
  44. Mathematics

    A rectangular pyramid that measure 10cm by 7cm. Calculate A the surface area B.volume of the pyramid C.the sides of a triangle.

    asked on December 1, 2017
  45. chemistry

    A metal x form different chlorides.If 12.7g of chloride A and 16.3g of chloride B contains 7.1g and 10.7g of chlorine respectively show that the figures agree with the law of multiple proportions. write their formular

    asked on January 23, 2017
  46. Math

    Show three ways to make 0.60 without using pennies

    asked on March 9, 2015
  47. science

    A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.

    asked on August 26, 2015
  48. Chemistry

    In the laboratory, a student heats 96.27 grams of zinc to 98.06 °C and then drops it into a cup containing 76.46 grams of water at 22.44 °C. She measures the final temperature to be 30.31 °C. Using the accepted value for the specific heat of zinc (See

    asked on September 26, 2019
  49. physics

    a stone projected horizontally from the top of a tower with a speed of 4m/s lands on the level ground at a horizontal distance 25m from the foot of the tower. calculate the height[g=10m/s2]. is it u squared divided by 2g

    asked on August 3, 2015
  50. Chemistry

    A student heats 64.05 grams of nickel to 97.80 °C and then drops it into a cup containing 81.11 grams of water at 21.79 °C. She measures the final temperature to be 27.84 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter

    asked on September 26, 2019
  51. Math

    Jada, Nicholas, Nita, and Calvin shared $60. Jada received 1/2 of the total amount of money Nicholas, Nita, and Calvin received. Nicholas received 2/3 of the total amount of money Nita and Calvin received. Nita received 3 times as much as calvin. (a) how

    asked on May 9, 2013
  52. Maths

    A boy went to a supermarket and spends 2/5 of his pocket money on biscuit, 1/4 on plantain chips and the remainder on drinks. i.wha fraction did he spend on plantain chips and biscuit ii.What fraction did he spend on drinks

    asked on January 14, 2020
  53. Chemistry

    After 0.6523g of CoCL2 .6H2O is heated, the residue has a mass of 0.3423g. Calculate the percent H2O in the hydrate. What is the formula of the hydrate

    asked on October 18, 2018
  54. chemistry

    how many unpeeled electrons are in this configuration 1s2 2s2 2p6 3s2 3p3

    asked on January 18, 2017
  55. math

    If an aircraft flies on a bearing of 120 degrees from point A to B, what bearing should it take to fly from B to A?

    asked on July 28, 2017
  56. Further maths

    The first term of an AP is equal to thrice the common difference. What is the sixth term of the AP,if the common difference is 8

    asked on April 19, 2016
  57. math

    Bladder infections are often caused when the bacteria E. coli reach the human bladder. Suppose that 3000 of the bacteria are present at time t = 0. Then t minutes later, the number of bacteria present will be a) How many bacteria will be present after 10

    asked on March 24, 2014
  58. physics

    A man of mass 50kg ascend a fight of stairs 5m high in 55 seconds.if acceleration due to gravity is 10ms the power expand is what

    asked on October 26, 2019
  59. statistics

    a study of 40 professors showed they spent on average 13.6 minutes correcting a student papers. Given a standard deviation of 17, the 90% confidence interval of the mean time for all the test papers is what?

    asked on November 15, 2010
  60. Further maths

    If x is an acute angle, tanx =3/4,evaluate coax _sinx÷cosx+sinx

    asked on February 10, 2019
  61. maths

    A bicycle has a radius of 28cm How far does it travel in four complete turns

    asked on January 19, 2017
  62. Science

    Starting from rest, an object rolls down a long ramp with a constant acceleration of 1.72 m/s2. After rolling for 4.75 s, what is the magnitude of the ball’s final velocity? A. 9.81 m/s B. 8.17 m/s C. 6.30 m/s D. 4.09 m/s

    asked on July 4, 2015
  63. Math

    one angle of an octagon is 56 degree find each of the other angle if they are equal to each other

    asked on October 8, 2019
  64. Physics

    An object is dropped from 320m high. Find the time of motion and velocity when it hits the ground.

    asked on April 16, 2019
  65. Maths

    A ladder leans against a vertical wall of height 12m.if the foot of the ladder is 5m away from the wall,calculate the length of the ladder.

    asked on June 13, 2016
  66. chemistry

    Pt, (H2) 1atm | CH3COOH 0.1 M, CH3COONa 0.15M || NaBr 0.1M, AgBr(S) | Ag write the cathodic, anodic and final reactions.

    asked on February 17, 2013
  67. chemistry

    Three gases (8.00 of methane, , 18.0 of ethane, , and an unknown amount of propane, ) were added to the same 10.0- container. At 23.0 , the total pressure in the container is 3.50 . Calculate the partial pressure of each gas in the container.

    asked on May 5, 2010
  68. physics

    A uniform rod (AB) of mass 80kg and 1.0m lenght is supported on the 2 knife edges placed 15.0cm from its ends. what will be the reactions at these support when a 20kg mass is suspend 10cm from the mid-point of the rod.(workings and diagram).

    asked on November 16, 2011
  69. physics

    A catapult used to hold a stone of mass 500grammes is extended by 2cm with an applied force F. if the stone leaves with a velocity 40ms-1, the value of F is.

    asked on January 19, 2017
  70. physics

    A spiral spring of natural length of 30.0cm and a constant force of 20N/m is compressed to 20cm. Calculate the energy stored in the spring.

    asked on January 7, 2014
  71. math

    show the limit of |X| if X tend to 0

    asked on November 1, 2018
  72. physics

    A spiral spring of natural length of 30.0cm and a constant force of 20N/m is compressed to 20cm. Calculate the energy stored in the spring.

    asked on January 7, 2014
  73. Business Communication

    Your boss wants to send a brief email message welcoming employees recently transferred to your department from your Hong Kong branch. They all speak English, but your boss asks you to review his message for clarity. What would you suggest your boss change

    asked on October 11, 2008
  74. Maths

    A box contain 40 pens of equal sizes.10 of them are green and 18 are red.if a pen is chosen at random from the box,what is the probability that is neither green nor red? Soln total number of pens=40 number of green pens=10 number of red pens=18 number of

    asked on June 13, 2016
  75. math

    Solve the simultaneous equation logx+logy=4 I would appreciate it if you help me

    asked on August 17, 2019
  76. Any math tutor online? Help

    Two companies charge these rates for printing a brochure : Company A charges $175 for set up and 0.10 pet brochure Company B charges $250 for set up and 0.07 pee brochure A linear system that model this situation is C=175 + 0.10n C =250+ 0.07 Where c is

    asked on December 15, 2014
  77. Pre-Algebra

    8/2=x+3/4, solve for x

    asked on October 3, 2019
  78. chemistry

    B. Everyone knows that water is supposed to boil at 100° C. Why did your water sample boil at a different temperature? C. While heating two different samples of water at sealevel, one boils at 102o C and one boils at 99.2o C. Calculate the percent error

    asked on September 16, 2011
  79. better days

    a ball thrown vertically from the ground level hits the ground after 4secs.calculatethe maximumheight it reachedduringit's journey.(g=10m/s2)

    asked on August 9, 2015
  80. Chemistry

    Ground water intially contains 1.800mg/L of iron as Fe3+. What must the pH be raised to in order to precipitat all but 0.30mg/L of iron. The tempertaure is 25 degrees celcius

    asked on January 18, 2011
  81. health

    the three things that describe and difine what enviorment is ?

    asked on October 5, 2008
  82. chemistry

    0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

    asked on October 12, 2016
  83. math

    Evaluate 3 log 2 + log 20 _ log 1.6

    asked on October 24, 2019
  84. Chemistry

    what volume would 1.31g of hydrogen occupy at 2.0atm and 127°c?

    asked on November 13, 2017
  85. Science

    The efficiency of a machine is 80%.calculate,the amount of energy needed by the machine to do work of 150joules.

    asked on August 25, 2016
  86. science

    A block of wood is weighed on a beam balance.its mass is 54g.The density of the block is1.8g/cm`3.Find volume

    asked on June 25, 2016
  87. chemistry

    Please I need a detailed explanation, am stuck doing this assignment, at what temperature in kelvin will co2 molecules have an rms speed equal to hydrogen at 20 Celsius?

    asked on March 2, 2016
  88. Math

    a)Write a function o represent the area of the rectangle. one side - 5x+15 other side - 31-2x b) Graph the function- lebel x and yint c)what dp the x-intercepts represent in this situaltion? d)Does the funtion have a maximum value in this situaltion? Does

    asked on January 1, 2016
  89. Any Math Tutor Online? Help

    man on 12m tower, he observed two houses. the angle of depression to one of them was 6' and the other is 3'. how far apart the houses are. Calculate the distance between the house if: a)the houses are on the same side of the tower b)the houses are on

    asked on December 14, 2014
  90. Math

    Suppose you plan to save $12 per week.You have already saved $7.50.In how many weeks will you have saved at least $100?

    asked on January 16, 2011
  91. Math

    a number is added to 10and12.if the product of the sum obtained is48,find the number

    asked on October 13, 2019
  92. math

    Byron wants to use the distributive property to rewrite the addition problem shown so that the numbers left in the parentheses have no common factor except 1. (48 + 36) Which is an equivalent expression that has numbers in the parentheses whose only common

    asked on October 17, 2018
  93. Trigonomentry help plz!!!

    Sin3A=3sinA-4sin(x/2)^3 find x interms of A? PLZ show working got no ideal at all

    asked on January 18, 2016
  94. Physics

    in air an object weighs 15N. when immersed in water it weighg 12. when immersed in another liquid it weighs 13N determine the density of the object and that of the liquid

    asked on February 10, 2020
  95. Chemistry

    How many grams of commercial C2H4O2 (97% pure by mass) must be allowed to react with an excess of PCl3 to produce 75.0g of C2H3OCL if the reaction has a 78.2% yield?

    asked on April 14, 2018
  96. Word problem algebra

    Steve the builder was plastering a wall while standing on a ladder..he noticed that the number of rungs/steps below,the rung he was standing on was 1/3 of the numbers of rungs above where he was standing. Then he climed another 10 rungs/steps and he also

    asked on January 18, 2016
  97. math

    john's age in the next ten years will four times his age five years ago. How old is john now?

    asked on April 5, 2017
  98. Physics

    A stone, 2kg is projected vertically at a velocity of 5m/s at an Angle of 60° Calculate I.Time taken to attain maximum height II.maximum height reached III.The range

    asked on February 12, 2017

    A mass of 2kg is dropped from a height of 3m.Neglecting air resistance,KE of the stone just b4 it hits the ground is ?

    asked on July 10, 2016
  100. Statistics

    For $5 you can buy a ticket for a drawing for a prize of $2,000. The probability of winning the prize is 0.001. How much money to you expect to win

    asked on February 20, 2015


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