Newest questions and responses by Prince
  1. Elevation and depression

    From the top of a tower 60m high, two ships are seen in a direction due south. The angle of depression of the ships from the top of the tower are 45degre and 30degree. Find the distance between the ships

    asked on August 17, 2018
  2. Chemistry

    Potassium chlorate is 75% pure 48 gram of oxygen would be produced from how much potassium chlorate

    asked on June 28, 2018
  3. Maths

    In trapezium ABCD,AB=14cm,AD=10cm,DC=xcm &distance between AB &DC is 8cm. find the value of x & area of the trapezium ABCD

    asked on January 10, 2018
  4. Math

    A solid body consists of a cylinder surmounted by a hemisphere of the same radius. The total length of the body, measured along the central axis of cylinder, is 10cm. If the radius of the hemisphere is xcm,show that the volume vcm^3, of the solid body is

    asked on October 22, 2017
  5. math

    A parabola f intersect the x- axis at B and C and the y-axis at E.The axis of symmetry of the parabola has equation x=3.The line through E and C has equation g(x)=x/2-7/2. Calculate the x coordinate of B

    asked on March 21, 2017
  6. Maths

    John and Kathleen are fertilizing their 13,000 square foot lawn,One bag of fertilizer covers 5,000 square feet.What is the fewest number of bags they need to purchase to fertilize their lawn ?

    asked on February 28, 2017
  7. Physics

    A body is dropped from rest from a height of 8m. How long does it take to reach the ground?

    asked on January 28, 2017
  8. Mensuration

    A carpet is laid around a rectangular dance floor measuring 10m by 8m.if the width of the carpet is 2m,find its area.

    asked on December 18, 2016
  9. physics 2

    How much higher will mercury stand in the open arm in a J-Tube manometer, if air column in the closed arm is reduced to 4 cm, the mercury id at the same level in both open and closed arms when the air column in the closed arm is 15 cm long. Assume

    asked on December 4, 2016
  10. Math

    The sums of n terms of two arithmetic series are in ratio of 2n+1:2n-1. Find the ratio of their 10th terms.

    asked on November 25, 2016
  11. Physics

    a piano string has a length of 2m and a density of 8,000kg/m3. when the tension in the string produces a strain of 1%, the fundamental note obtained is 170 Hz. calculate the modulus of elasticity for the material of the string.

    asked on October 18, 2016
  12. math

    Every Saturday,mother and Claire go to the market.On each marketing day,they spend 3 hours including the travel time.What fraction of the day is used in marketing every Saturday?

    asked on October 10, 2016
  13. Trigonometry

    a) The ship left the port and sailed for 2 hours on a course of 75 degrees,at an average speed of 2.5 nautical miles per hour. b) It changed its course to 165 degrees and travelled for 3 hours, at an average speed of 4 nautical miles per hour. Your team is

    asked on September 23, 2016
  14. Trigonometry

    a) The ship left the port and sailed for 2 hours on a course of 75O, at an average speed of 2.5 nautical miles per hour. b) North It changed its course to 165O and travelled for 3 hours, at an average speed of 4 nautical miles per hour. Your team is tasked

    asked on September 23, 2016
  15. maths

    Solve 2m^2+5m-20=0 using quadratic formula

    asked on September 7, 2016
  16. Math

    Ali has 4 mangoes,Joe has 3 how many more mangoes does Ali have

    asked on May 11, 2016
  17. math

    An elastic spherical ballon is being blown up so that the radius is increasing at a rate of 1cm/sec. Calculate the rate at which the volume of the ballon is increasing when the radius is 5cm

    asked on April 21, 2016
  18. math

    lf the first of an AP is 7 and 80th term is 393,find the sum of the first 80 terms

    asked on March 31, 2016

    A UNIFORM METER RULE IS PIVOTED AT P IN 80cm mark on the meter rule force 0.2 And 0.8N Are Applied At M The 60Cm Mark And Q The 90Cm Mark.If The Rule Is In Equilibrium .Find The Mass Of The Rule.Take g=10ms-2

    asked on January 27, 2016

    A BODY OF 50N Rest On A Smooth Plane Incline At 30 Degree To The Horizontal Which Force Applied Parallel To The Plane Will Keep The Body In Equilibrium

    asked on January 27, 2016


    asked on January 27, 2016

    A BLOCK OF WOOD REST ON AN INCLINE PLANE AND THE COEFFICIENT OF FRICTION BETWEEN THE BLOCK AND THE PLANE IS KNOWN TO BE 0.31 At What Angle Must The Plane Be Inclined To The Horizontal So That The Block Begins To Move Down The Plane

    asked on January 27, 2016

    A CAR TRAVELLING AT 30M/S Overcome A FrictionAlly Resistance Of 100N While Moving.What Is The Power Of The Engine(Take 1 Hp=3/4 Kw)

    asked on January 27, 2016
  24. math

    45% of a class are girls if these are 40 chidren in the class how many are boys?

    asked on January 20, 2016
  25. Physics

    The truck of a passenger car applies brakes at a velocity of 30 m/s and comes to rest 5 seconds later. What is the deceleration?

    asked on November 24, 2015
  26. Physics

    how long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s2.

    asked on November 24, 2015
  27. physics

    A 40 N force is applied at an angle of 30o to the horizontal to pull a 6 kg box along the floor. If the coefficient of friction between the box and floor is 0.3.The box initially at rest moves a horizontal distance of 5m. What is the speed of the box when

    asked on November 9, 2015
  28. physics

    a mass of 15kg was suspended from a ceiling is pulled aside with a horizontal force,F, calculate the value of tension, T. (g=10m/s)

    asked on September 27, 2015
  29. St.Peter's Boys Senior High School

    In a class of 500 students,60 study geography,40 study English,30 study geography and history,25 study English and history,if 10 study all the three subjects,find using venn diagram the number of students who study none of the three subjects.

    asked on August 24, 2015
  30. Augusco

    The speed of a car weighing 1500kg increase from 40m/s to 50m/s.calculate the change in its momentum

    asked on August 18, 2015
  31. life orantation

    evaluate the extent to wich the service delivery protest met?

    asked on May 23, 2015
  32. science

    If the half life- period of a radioactive element is 1600.After how many years will if remains 25% of his quantity

    asked on April 11, 2015
  33. physics

    dahnay carried a box (5,4)m.the box had a mass of 5kg.dahnay says that over 300J of work was done on the box . is dahnay correct?explain the answer.

    asked on March 16, 2015
  34. physics

    When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.87 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

    asked on February 15, 2015
  35. math

    Francine can read 24 pages in 30 minutes.How can you mentally calculate the number of pages she can read in 45 minutes

    asked on February 6, 2015
  36. Math

    A trees shadow is 32 feet long how tall is the tree?

    asked on November 26, 2014
  37. Economics

    What are the cost and consequences of providing the subsidies and welfare?

    asked on May 5, 2014
  38. Economics

    Why is the south african government is not providing enough welfare on subsidies to the poor and underpriviledged?

    asked on May 4, 2014
  39. science

    30 ml KMnO4 solution is required to titrate 25 ml M/50 oxalic acid solution.find the molarity of KMnO4 solution and g/L also.

    asked on October 25, 2013
  40. Algebra

    Each day, a lion in South Africa spends 1/6 of the day watching gnus and 1/4 hours chasing gnus. Then the lion takes 4 times as much time consuming the gnus as chasing the gnus. What is the number of minutes that a lion spends a day watching, chasing and

    asked on September 22, 2013
  41. Math

    Old McDonald has cows and chickens on his farm. If the animals on his farm have a total of 197 heads and 634 legs, how many cows does Old McDonald have? Note: A cow has 1 head and 4 legs. A chicken has 1 head and 2 legs.

    asked on September 22, 2013
  42. life orientation

    Three environmental health hazards that cause ill health

    asked on April 30, 2013
  43. mathematics

    what value of k makes the given expression a perfect square?M square -8m+k

    asked on April 28, 2013
  44. mathematics

    find the 8th term of an A.P -3,-1,1

    asked on April 28, 2013
  45. Math

    Explain how to find 14 x 19 by breaking apart the factors in tens and ones and finding the sum of the four parts

    asked on January 22, 2013
  46. Math

    Draw the graph of the following function on the given interval. [4 marks] y=1.8cos⁡(2x+〖30〗^o ) -〖180〗^o≤x

    asked on January 21, 2013
  47. Math

    2. A propeller on a gas turbine rotates 64° every 2.70 minutes. What is the angular velocity in rev/s? What is the linear speed of a point at the tip of the blade if the diameter of the blade is 5.37 ft?

    asked on January 21, 2013
  48. Math

    1. Find the area of a segment of height 22.1 inches in a circle of radius 6.42 ft. Draw a rough sketch of a circle showing the height and radius. Consider significant digits.

    asked on January 21, 2013
  49. chemistry

    what is the boiling poinj of cs2,naf andco2

    asked on November 22, 2012
  50. chem

    If an albumin solution replaces starch inside the dialysis tube, would it be detected in the liquid outside the dialysis tube

    asked on November 14, 2012
  51. Math

    Without using calculator,evaluate Sin15 deg,Cos 15 deg,Sin 75deg. O need the answer urgently pls.

    asked on November 14, 2011
  52. science

    What is the density of 57g and a volume of 6mL

    asked on September 22, 2011
  53. Maths

    Jason’s credit card’s beginning unpaid balance for August is $2,000. During the August billing cycle he made a payment of $200 and used card to purchase $50 worth of grocery. Credit card charges 24% annual percentage rate and uses the unpaid balance

    asked on September 20, 2011
  54. life orientation

    Topic:the practice of high-risk sexual behaviour amongst the adolescence. Describe the life style behaviour and explain 5 factors

    asked on June 1, 2011
  55. Physics

    Earth has a mass of 5.97x10^24kg and a radius of 6.38x10^6m. Find the wight of a 65.0kg person on the surface of the earth and 1000km above the surface of earth?

    asked on January 12, 2011
  56. Chemistry

    how many milliliters of 0.250M KOH will react with 15.0mL of 0.305 M H2SO4?

    asked on December 9, 2010
  57. Chemistry

    a 15.00mL sample of NaOH was titrated to the stoichiometric point with 17.40mL of 0.2340M HCl. a) what is the molar concentration of the NaOH solution? b)calculate the grams of NaOH in the solution.

    asked on December 9, 2010
  58. Chemistry

    calculate the theoretical number of moles of HCl equivalent to 1 mole of a) NaHCO3 b)CaCO3 c)Al2O3

    asked on December 9, 2010
  59. Chemistry

    How many milligrams of NaHCO3 are in a 500mg tablet if 40.0 mL of 0.120M HCL is required to neutralize the sample?

    asked on December 9, 2010
  60. Chemistry

    How to find the molarity of NaOH when the given is 0.1803 grams of KHPg/mol molecular w. of KHP is 204.2 9.7 ml NaOH

    asked on December 9, 2010
  61. Math

    If one apple and two pears cost $1.55 and two apples and two pears cost $2.30, how much does one apple cost?

    asked on December 8, 2010
  62. Western Civilization to 1648

    1. Discuss how Alexander the Great created an empire in which Greek civilization flourished in the midst of many diverse cultures. 2.Discuss how the Greek city state developed in the farmework of larger word dominated by Persia. 3. Discuss the political,

    asked on April 19, 2010
  63. math

    what did the teacher do with ogar's cheese report

    asked on February 19, 2009
  64. business

    Explain how Hershey's uses flexible manufacturing to meet customer demands

    asked on August 16, 2008
  65. Econ

    How's the Federal Budget Deficit related to trade imbalances?

    asked on October 1, 2007
  66. math

    how do you find the diameter of a circle if you don't have the radius? the circumference is 628 cm. Divide the circumference by pi, which is 3.14 (approximately). That will give you the diameter. Circumference = pi * D

    asked on February 16, 2007
  67. Math

    Determine whether ~ [ ~(p v ~ q) p v ~ q. Explain the method(s) you used to determine your answer i would use a truth table

    asked on January 24, 2007
  68. topics wrting in english

    . in one of the periodic publications of the country, whose language is studied, you read article about the liquidation of zoos in the large cities. You converse with your friends: 1) describe to them about that read, say, what the title of article was; 2)

    asked on December 31, 2006
  1. life orientation grade 11

    Why a study on environmental issues that causes ill health a necessity

    posted on August 30, 2018
  2. Physics


    posted on January 11, 2018
  3. Statistics

    I am officially going down in history for this reply.

    posted on November 27, 2017
  4. s.s

    Yes fadf I have seen a crap load of her post from 2001 thru 2017 I am shocked she is even alive because of how much she does this but I wonder if she some kinda bot lol well I gtg

    posted on November 2, 2017
  5. chemistry


    posted on April 18, 2017
  6. physical

    A car moving with the velocity of 20m/s at 30 to the horizontal, what is the components of the velocity along the horizontal

    posted on January 13, 2017
  7. science

    i think it is just a hard Q.

    posted on November 25, 2016
  8. chemistry


    posted on November 14, 2016
  9. Life orientation

    Make six suggestions on how to combat the violation or discrimination

    posted on May 19, 2016
  10. Life Orientation

    report violation to international violation

    posted on May 9, 2016
  11. life orientation

    People will live in fear

    posted on April 28, 2016
  12. L.O

    Human right violation of xenophobia

    posted on March 6, 2016


    posted on January 27, 2016
  14. math

    cross multiply and you will get something like this 2.5 X x = 0.5 X 1.25 which the answer will be 2.5x = 0.625 because we are finding for x so divide both sides by 2.5 so that x can stand alone. so 0.5x over(divided by) 2.5 and 0.625 over(divided by) 2.5.

    posted on November 24, 2015
  15. Physics

    1 answer

    posted on September 13, 2015
  16. chemistRY


    posted on April 11, 2015
  17. advance algebra

    i think of 3 positive numbers. the greatest number is twice a perfect square. the least of them is 1 less than half the greatest number. the average of the 3 numbers is 12.

    posted on August 28, 2014
  18. tourism,geography,economics and math literacy

    geography,tourism and maths literacy

    posted on June 18, 2014
  19. body systems

    Its B

    posted on May 12, 2014
  20. HEALTH


    posted on May 6, 2014
  21. baker

    B: When they struggle with body changes.

    posted on May 5, 2014
  22. health


    posted on May 5, 2014
  23. life orientation


    posted on May 4, 2013
  24. intermediate algebra

    Let l = measure of the parallel side of the highway in meters w = measure of the perpendicular side of the highway in meters l + w = 3000 l = 3000 - w length = 3000 - w width = w A= lw **since we will only use 1 side of the length, we will use: A=

    posted on February 17, 2013
  25. Chemistry

    oh, you used the molarity to get the mole.. but i don't know what will i do with the 500mg and how to relate (3)and(4) to get the mass of NaHCO3.

    posted on December 9, 2010
  26. Chemistry

    thank you. i'm just confused what to use to find the number of moles, when there's mass and other given. thanks for the help.

    posted on December 9, 2010
  27. Chemistry

    i didn't round it off, because in our class we have a rule that we should not round off until we get the final answer. NaHCO3 + HCl -> NaCl + H2O + o2 0.040 L / 0.120 mole L = 0.33..

    posted on December 9, 2010
  28. Chemistry

    oh! is it right? i need to multiply the number of HCl to 1mol/6.022x10^(23)?

    posted on December 9, 2010
  29. Chemistry

    oh, i'm sorry, i was not able to see your answer on my previous question right away. i was posting my questions first, hoping to have answers right a away even with just one of my posts. i'm sorry. and thank you, i'm now using what you told me. :)

    posted on December 9, 2010
  30. Chemistry

    i got 0.01371516348 moles of HCl and then the molecular mass of NaHCO3 is 84.008.. how am i going to use these 2 to find the mass of NaHCO3? (sorry, i'm just confused)

    posted on December 9, 2010
  31. Chemistry

    a)HCl + NaHCO3 -> NaCl + H2O + CO2 b)2HCl + CaCO3 -> CaCl2 + H2CO3 -> CaCl2 + H2O + CO2 c) Al2O3 + HCl -> AlCl3 + H2O + O2 hmmm a) 1mole b) 2moles 3) 1 ??

    posted on December 9, 2010
  32. Math

    OOOOkkay! Now I got it! The amount of pears stayed the same. Thanks!

    posted on December 8, 2010