Prince

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

2. Chemistry

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

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

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

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

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 ?

7. Physics

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

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.

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

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.

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.

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?

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

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

16. Math

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

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

18. math

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

19. PHYSICS

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

20. PHYSICS

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

22. PHYSICS

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

23. PHYSICS

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)

24. math

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

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?

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.

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

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)

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.

30. Augusco

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

31. life orantation

evaluate the extent to wich the service delivery protest met?

32. science

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

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.

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?

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

36. Math

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

37. Economics

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

38. Economics

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

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.

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

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.

42. life orientation

Three environmental health hazards that cause ill health

43. mathematics

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

44. mathematics

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

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

46. Math

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

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?

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.

49. chemistry

what is the boiling poinj of cs2,naf andco2

50. chem

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

51. Math

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

52. science

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

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

54. life orientation

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

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?

56. Chemistry

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

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.

58. Chemistry

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

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?

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

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?

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,

63. math

what did the teacher do with ogar's cheese report

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

65. Econ

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

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

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

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)

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

posted on August 30, 2018
2. Physics

Up

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

LITHIUM

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

120

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
13. PHYSICS

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

posted on September 13, 2015
16. chemistRY

3.5g

posted on April 11, 2015

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

A

posted on May 6, 2014
21. baker

B: When they struggle with body changes.

posted on May 5, 2014
22. health

A?

posted on May 5, 2014
23. life orientation

POTOKO HIGH SCHOOL

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