Vivek

Most popular questions and responses by Vivek
  1. Maths Mensuration

    Prove that the area of a circular path of uniform width h surrounding a circular region of radius r is pi h (2r+h)

    asked on August 21, 2016
  2. Maths Algebra

    The size of a red blood cell is 0.000007 m and that of a plant cell is 0.00001275 m.Show that a red blood cell is half of plant cell in size

    asked on August 17, 2016
  3. Maths Mensuration

    The inner circumference of a circular track is 220 m.The track is 7 m wide everywhere.Calculate the cost of putting up a fence along the outer circle at the rate of $2 per metre.

    asked on August 19, 2016
  4. Maths Mensuration

    The length and breadth of a park in the ratio 2:1 and its perimeter is 240 m. A path 2m wide runs inside it,along its boundary.Find the cost of paving the path at Rs 80 per square metre?

    asked on September 20, 2016
  5. math

    Triangle ABC , BC = CD and (angle ABC - angle bac ) =30, the measure of angle and is?

    asked on February 25, 2016
  6. Maths Profit and Loss

    By selling 125 cassettes,a man gains an amount equal to the selling price of 5 cassettes. Find the gain%.

    asked on August 19, 2016
  7. Maths Algebra

    A steamer goes downstream and covers the distance between two ports in 4 hours while it covers the same distance upstream in 5 hours.If the speed of the stream is 2 km/h.Find the speed of steamer in still water.Check your solution.

    asked on August 19, 2016
  8. Maths Compound Interest

    In a experiment the count of bacteria was increasing at the rate of 2.5% per hour. Initially, the count was 512000.Find the bacteria at the end of 2 hours?

    asked on August 19, 2016
  9. Maths Mensuration

    A field in the form of a parallelogram has base 15 dam and altitude 8 dam.Find the cost of watering the field at the rate of 50 paise per square metre???????Please help to solve this????????????????

    asked on August 20, 2016
  10. Maths Pie chart

    In the pie chart representing the percentages of students having interest in reading various kinds of books,the central angle of the sector representing students reading novels 81°. What is the percentage of students interested in reading novels?

    asked on August 19, 2016
  11. Maths Algebra

    A sum of Rs 8400 is made up of 50,20,10 and 5 rupee notes.The number of 10 rupee notes is five times the number of 5 rupee notes, four times the number of 20 rupee notes and ten times the number of 50 rupee notes.What is the number of notes in each

    asked on August 19, 2016
  12. Maths Percentage

    Find the percentage of pure gold in 22-carat gold, if 24-carat gold is 100% pure gold.

    asked on September 24, 2016
  13. math

    In how many ways a selection can be made of atleast one fruit of 5 bananas, 4 mangoes and 4 almonds

    asked on February 23, 2016
  14. physics (motion)

    the initial velocity of a particle is u (at t=0) and acceleration f is given by at.which relation is valid: (a)v=u+at^2 (b)v=u +at^2/2 (c)v=u+at (d)v=u

    asked on June 23, 2014
  15. physics

    What is force defin it

    asked on January 2, 2012
  16. Maths Exponents

    (1) 11×10^-5 .Express it in scientific notation. (2)The distance between sun☉ and earth🌎 is (1.496×10^11)m and the distance between earth 🌎 and moon 🌙 is (3.84×10^8)m.During solar eclipse moon comes in between earth and sun.At that time what

    asked on September 17, 2016
  17. Maths Algebra

    Half of a herd of deer are grazing in the field and three-fourths of the remaining are playing nearby.The rest 9 are drinking water from the pond.Find the number of deer in the herd.

    asked on August 19, 2016
  18. Maths Percentage

    The value of a machine depreciates every year by 10%.If the present value of the machine is Rs 54000,what was its value last year?

    asked on August 19, 2016
  19. Maths Compound Interest

    In what time will Rs 1000 amount to Rs 1331 at 10% per annum, compounded annually?

    asked on August 19, 2016
  20. Maths Profit and Loss

    The cost price of 12 candles is equal to the selling price of 15 candles . Find the loss%.

    asked on August 19, 2016
  21. Maths Algebra

    The diameter of Sun is (1.4 ×10^8)m and the diameter of Earth is (1.2742×10^4)m . Show that the diameter of sun is nearly 100 times the diameter of Earth.

    asked on August 19, 2016
  22. Physics

    The typical lifetime of a star like our Sun is 10 billion years. While a star like our Sun is able to generate energy in its core (through fusion) the thermal pressure balances the gravitational pressure from the Sun’s mass. However, once the star rules

    asked on November 23, 2015
  23. james knox polk

    how did he become famous? http://www.whitehouse.gov/history/presidents/jp11.html

    asked on January 21, 2007
  24. Math

    A rectangular Park of length 80m and width 65m has two paths of uniform width 2.5m crossing each other. Find the area of remaining portion.

    asked on January 28, 2017
  25. Maths Algebra

    In a Library stack there are 4 books each of thickness 24 mm and 6 paper sheets each of thickness 0.015 mm. What is the total thickness of the library stack in scientific notation?

    asked on August 19, 2016
  26. Maths Profit and Loss

    Oranges are bought at 6 for Rs 10 and sold at 4 for Rs 9. Find the gain% or loss%.

    asked on August 19, 2016
  27. Science

    a stone mass of 2.5kg is falling a certai height. Find the force of attraction between the earth and the stone. Also find its acceleration

    asked on October 1, 2016
  28. Maths discount%

    Find the single discount equivalent to two successive discounts of 20% and 10%.

    asked on August 20, 2016
  29. Physics

    A round object with mass m and radius R rolls down a ramp that makes an angle θ with respect to the horizontal. You can assume there is static friction so that the object rolls without slipping. a) For now, take the moment of inertia of the object to be I

    asked on November 23, 2015
  30. jdt trignometric

    tan¦È=7/24 then prove that ¡Ì(1-cos¦È/1+cos¦È)=1/7 WHERE 0

    asked on June 21, 2015
  31. Science

    What is comet how it fall and why he look blue

    asked on February 25, 2012
  32. physics

    what is the angular speed of one satellite as seen by an astronaut in another satellite?

    asked on February 21, 2012
  33. chemistry

    The label of a spread says that it contains, per 100 g product: 80 g fat; 20 g saturated fat. What is the percentage of saturated fatty acids expected in the fat extracted from this spread? 25% 80% none of these 20% 16%

    asked on February 24, 2011
  34. chemistry

    To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL

    asked on February 24, 2011
  35. chemistry

    To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL

    asked on February 24, 2011
  36. Physics

    A car reaches a speed of 40m/s from rest in a time of 8 seconds. After the 8 seconds, the car travels at a constant velocity fro 200meters when it runs out of gas. The car slowly comes to rest 30 seconds after running out of gas. Calculate acceleration for

    asked on October 25, 2010
  37. physics

    an object of mass 2 kg attached to wire length 5 cm is revolved in a horizontal circle if it makes 60rpm find angular speed

    asked on June 22, 2017
  38. Maths Percentage

    Due to an increase in the price of sugar by 25%,by how much percent must a householder decrease the consumption of sugar so that there is no increase in the expenditure on sugar?

    asked on August 21, 2016
  39. Maths Algebra

    In a hostel,50 kilogram milk are consumed everyday.If each student gets 400 gram of milk per day,find the number of students who take drinks in the hostel.

    asked on August 19, 2016
  40. Maths Squares and Square roots

    How to find the sum, without adding? (1)(2+4+6+8+10) (2)(1+3+5+7+9+11+13) (3)(2+4+6+8+10+12+14+16+18+20)

    asked on August 19, 2016
  41. Maths Triangles

    Prove that the sum of the angles of Triangle is 180°.

    asked on August 19, 2016
  42. science

    What is in orange, but not in banana, cherry has it, but not in apple?

    asked on December 8, 2015
  43. geography

    geography envoirment

    asked on March 4, 2011
  44. Math

    metrix method solve equation 2x-y-3z=9 ,x+y+z=6 ,x-y+z=2

    asked on July 19, 2018
  45. Physics

    A man pulls a bucket of water of mass 10kg from a well 5meter deep in 5 sec. Calculate the power of the man.

    asked on December 18, 2017
  46. math

    Find five rational numbers between - 3/5 and - 1/2

    asked on November 30, 2016
  47. Maths Percentage

    (1)Emraan income is 25% more than that of Syed. How many per cent is Syed's income less than that of Emraan? (2)Ram's income is 20% more than that of Lakshman. How many percent is Lakshman's income less than that of Ram? (3)Hero's income is 20% less than

    asked on September 13, 2016
  48. Maths Percentage

    Syed's income is 25% more than that of Emraan.How many per cent is Emraan's income less than that of Syed?

    asked on September 12, 2016
  49. Maths Graph

    Q1(a)-How to draw the graph of the function A=x^2. Q1(b)-From the graph, How to find the value of A,when (i)x=2 (ii) x=3 (iii)x=4

    asked on September 7, 2016
  50. Maths Mensuration

    An ox in a oil processing apparatus is tethered to a rope 3m long .How much distance does it cover in 14 rounds?

    asked on August 21, 2016
  51. Maths Percentage

    A period of 4 hours and 30 minutes is what per cent of a day?

    asked on August 19, 2016
  52. Maths Algebra

    Ravi owns a plot of rectangular shape.He has fenced it with a wire of length 750 m.The length of the plot exceeds the breadth by 5 m. Find the length and breadth of the plot.

    asked on August 19, 2016
  53. Math

    given f(x)= 5x+4/5x^2+4x and g(x) = 1/x simplify f(x) and find any vertical asymptotes

    asked on August 19, 2016
  54. Maths Algebra

    Solve and check the result.3(5x-7)-2(9x-11)=4(8x-13)-17

    asked on August 19, 2016
  55. Maths Quadrilaterals

    Prove that the sum of the angles of Quadrilateral is 360°.

    asked on August 19, 2016
  56. Maths Time and Work

    The rates of working of A and B are in the ratio 3:4.Find the number of days taken by them to finish the work?

    asked on August 19, 2016
  57. Maths Unitary Method

    If 5 men or 7 women can earn Rs 875 per day.how much would 10 men and 5 women earn per day?

    asked on August 19, 2016
  58. Maths Algebra

    Mass of Earth is (5.97×10^24)kg and Mass of Moon is (7.35×10^22)kg.What is the Total mass of the two?

    asked on August 19, 2016
  59. Physic

    What is comet how it fall

    asked on February 25, 2012
  60. Physics

    What is energy

    asked on February 24, 2012
  61. physics

    The earth's atmosphere extends to a height of nearby 200KM above its surface there many be explosion and noises taking place in the outer space but we do not hear them.why?

    asked on January 3, 2012
  62. math

    what is the perimeter value of r=a(1+cos theta)

    asked on March 28, 2011
  1. physics

    4 ohm

    posted on June 10, 2018
  2. Physics

    Here,m=10kg h=5meter t=5sec g=10m/s and,since P=(m×g×h)÷t (10×10×10)÷5 =100

    posted on December 18, 2017
  3. math

    4/5

    posted on May 28, 2017
  4. trig

    75/2

    posted on February 20, 2017
  5. Maths Congruence

    This is a right triangle.

    posted on September 21, 2016
  6. math

    Decimal form of 5/8 = 0.625 Decimal form of 4 5/8 = 0.625+4 =4.625 HENCE DECIMAL FORM OF 4 5/8 is 4.625.

    posted on August 19, 2016
  7. Maths Mensuration

    Let the inner and outer radii of the circular track be R metres and m metres respectively.Then,Inner circumference=220 metre (Use pi= 22/7) 2piR=220 2×22/7×R=220 R=35 m Since the track is 7 metre wide everywhere. m=Outer radii = R+7 = (35+7)m=42 m Outer

    posted on August 19, 2016
  8. maths

    A=D1*D2 LIKE D=24 AND 18. SO 24*18=432. THEREFORE AREA=432 . AND SIDE= SQRT D1*2+D2*2 . SO GIVEN D1 AND D2 =24 AND 18 =SQRT 24^2 +18^2= 576+324 =900 THEREFORE SIDE= sqrt900=30.

    posted on September 21, 2014
  9. maths

    3-0 9-0 11-5

    posted on July 16, 2013
  10. physics

    Assume g= 10 m/sec2 60*x1 + 35*x2 = 1.3*10=13 on observation we get x1= 0.1 m x2= 0.2 m so tan(angle)= .1/.8= .125 angle= 7.125 degree

    posted on December 14, 2012
  11. Physics

    Wgat is energy

    posted on February 20, 2012
  12. physics

    The capacity do to work

    posted on January 3, 2012
  13. physics

    300 cos 35.2 - Fk = ma fk = 300 cos 35.2 - ma Fn = mg + 400 sintheta = 300 + 400 sin 35.2 Fk = Fn*uk uk = 0.57 300 cos 35.2 - ma = 0.57 [ 300 + 400sin 35.2] -ma = (0.57)[300+400sin35.2]- [300 cos 35.2] a = all that crap on the right side/ (300N/0.9) a =

    posted on October 23, 2011
  14. Math

    b. 525 is the population of the frogs after 5 years

    posted on March 28, 2011
  15. math

    44 degree

    posted on March 28, 2011
  16. math

    we have problem it'sa regular quadilateral example given by u is not correct

    posted on November 8, 2009