# Rahul

Popular questions and responses by Rahul
1. ## chemistry

identify the type of reaction:- FeSO4 + heat ----------> Fe2O3 + SO2 + SO3

2. ## Science

Find out the amount of heat required to convert 1 gm of ice at -30 ⁰C to 1 gm of steam at 120 ⁰C. Given the specific heat of ice is 2090 J/kg/⁰C, specific heat of water 4180 J/kg/⁰C, specific heat of steam is 2010 J/kg/⁰C, latent heat of ice to

3. ## English

Write the characteristics of lencho.

4. ## Geometric progression

The first term of a G.P. Is 5 and the common ratio is-2. What is the 6th term?

5. ## Chemistry

what is the OH- concentration of 0.08 M solution of CH3COONa

6. ## trig

sec0+ten0-1/tan0+sec0+1=1+sin0/cos0

7. ## math

12x + 16y=1/5 & 13x + 24y =1/4,find value of x & y.

8. ## science

all acids are not corrosive.justify this statement

9. ## Science

A boy travels a distance of 10 m towards south and then he runs towards east and travels 12 m in that direction. Calculate (i) the total distance travelled by the boy and (ii) the displacement from his initial position

10. ## chemistry

calculate the freezing point of an aqueous solution containing 10.50 g of MgBr2 in 200 g of water (MgBr2=184 g, Kf for water =1.80 K kg mol-1)

11. ## MAnagerial Economics

In the long Run Who play a dominant role. Options:- Income, Demand, Supply, Price.

12. ## Geometric progression

First term and the sum of an infinite G.P. are 2 and 3 respectively. find the common ratio and sum upto n term.

13. ## mathematics

Find the angle of depression of a boat from the bridge at a horizontal distance of 25 m from the bridge if the height of the bridge is 25 m

14. ## Physics

The speed of the tip of a second hand of length 5 cm of a clock is m/s

15. ## Geometric progression

Express 0.54 as a rational number. sir this question answer is 6/11

16. ## math

A box of constant volume c is to be twice long as it is wide . the material on the top and four sides cost three times as much per square metre as that in the bottom. what are most economic dimensions ?

17. ## Math

Sin square 5 degree plus Sin square 10 degree plus Sin square 15 degree plus..........Sin square 90 degree

18. ## mathematics

The members of a high school basketball team are driving from calgary to vancouver,which is a distance of 675km.Each tire of their van has a radius of 32cm.If the team members drive at constant speed and cover the distance in 6h 45 min,what is the angular

19. ## Geometric progression

The sum of n terms of a series is a.2n-b, find its nth term. are the terms of this series in G.P. ?

20. ## Science

500g of water at 100°c is mixed with 300g of water at 20°c.specific heat capacity of water is 4.2Jg°c.find the final temperature of mixture. (Physics)

21. ## AP Chemistry

What volume of each of the following bases will react completely with 21.00 mL of 0.500 M HCl? (a) 0.100 M NaOH (b) 0.0500 M Ba(OH)2 (c) 0.250 M KOH

22. ## chemistry

When water is cooled to a temperature x , it gets converted into ice at temperature x by a process called p. And when ice at temperature x is warmed, it gets converted into water at the same temperature x in a process called Q a) what is the value of

23. ## math

In how many years will RS 150 double itself at 4 persent simple interest?

24. ## Math

A rectangular strip 25cm*7cm is rotated about the longer side. find the total surface area of the solid thus generated.

25. ## Geometric progression

The sum of an infinite g.p. whose common ratio is numerically less the 1 is 32 and sum of the first two is 24.

26. ## Physics

The near point of a patient's eye is 58.2 cm. (a) What should be the refractive power ℛ of a corrective lens prescribed to enable the patient to clearly see an object at 22.0 cm? ℛ = dpt (b) When using the new corrective glasses, the patient can see an

27. ## physics numeral

A person rows his boat in stream with a speed of 2.0 m/s.Water in the stream is flowing perpendicular to the direction of flow,find graphically his resultant velocity.

28. ## AP Chemistry

Write the balanced molecular, complete ionic, and net ionic equations for the reactions that occur when the following are mixed. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a)

29. ## chemistry

how many moles of methane are required to produce 22g of CO2 after combustion

30. ## math

a ball is dropped from a height of 5m assuming that on each bounce the ball return to 60percent of its height attained

31. ## Math

a swimming pool is 40m long 25m wide 6m deep find a cost of cementing of its floor and walls at the rates of ₹135 square per meter

32. ## math

In an election there were 2 candidates the winner poled 53% votes and won by 9600 votes find total number of votes

33. ## Geometric progression

If the fifth term of a G.P. Is 81 and second term is 24, find the g.p. Sir this question answer 16,24,36,54 please help

34. ## chemistry

Henry's law constant for N2 and O2 is 1.6 *10^-6and 8.77*10^-7 molal/mm Hg at 298k.Air has 78 mole percentage N2 and 21 mole percentage O2.at atmospheric pressure the ratio of solubility of N2 and O2 in water is?

distance=8m,speed=42/5centimeter/sec,time=?

36. ## physics

car moving on a straight road covers a distance of 1.5 km due east in 150 second.what is the speed of the car?what is it's velocity?

37. ## Theory of machines

A locomotive is running at a constant speed of 100 km/ h. The diameter of driving wheels is 1.8 m. The stroke of the piston of the steam engine cylinder of the locomotive is 600 mm. Find the centripetal acceleration of the crank pin relative to the engine

38. ## physics

Two identical small marbles A and B can be seen. A is at rest while B moves towards A at uniform velocity. The track is smooth towards left of P while it offers a resistance of 0.1 m/s2 towards its right. After some time, the marbles are seen at rest 25cms

39. ## algebra

Monika had 5 boxes of chocolates with her. If each box contains 25 chocolates. find the total chocolates she had.

40. ## physics

A spacecraft circling the moon at a distance of 384,000 km from the earth communicates by radio with a person on earth. How much time elapses between the sending and receiving of a signal?

41. ## AP Chemistry

What mass of Na2CrO4 is required to precipitate all the silver ions from 96.0 mL of a 0.650 M solution of AgNO3?

42. ## AP Chemistry

Write the balanced molecular, complete ionic, and net ionic equations for each of the following acid-base reactions. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) HClO4(aq) +

43. ## Physics

A light string, connects blocks 1 and 2 of masses m1 and m2. These blocks are further connected to a block of mass M by another light string that passes over a pulley of negligible mass and friction. Blocks 1 and 2 move with a constant velocity v down the

44. ## Maths

Evaluating [20] gives [17] a)1140 b)1141 c)1131 d)1130

45. ## Science

What happens when you bleach the fur of a German Shepherd?

46. ## math

Five square flower beds each of sides 1m are dug on a piece of land 5m long 4m wide . What is the area of remaining part of land?

What is i?

48. ## Geography

What happens when we move vertically upwards from the Earth ?

49. ## Maths

If the area of rhombus is 240sq m and perineter is 68m find the length of diagonal.

50. ## Math Calculus

A cylindrical tank with axis horizontal has a diameter d and a length L. It holds oil to depth d ( d

51. ## Tourism

A person personality stay the same throughout life

52. ## physics

Three point sized bodies each of mass M are fixed at three corners of light triangular frame . In the above problem about an axis perpendicular to the plane of frame and passing through a corner of frame the moment of inertia of three bodiea is ??

53. ## Maths

Express 14 upon root six ➖ root 5 ➖ root eleven with rational denominator

54. ## Maths

What is corresponding parts of a congruent triangle

55. ## math

ice in a refrigerator melts at rate of 3 kg per hour. the temperature outside is 27°c. find the minimum power output of a motor used to drive the refrigerator,which just prevents ice from melting. latent heat of ice = 80 cal/g,J=4.2 joule/cal, 1 h.p = 746

56. ## Physics

Find the distance of the image when an object is placed on the principal axis at a distance of 10 cm. In front of concave mirror whose radius of curvature is 8 cm

57. ## Science

A craane lifts an 8000N height 75m to the top of a buildings in 30s. How much power does the crane use?

58. ## dp

What is the pressure due to a man weighing 80 kg standing on his feet? Area of his feet 160 Sq. Cm

59. ## Accountany

What is legacy

n2-15n+100

61. ## Geometric progression

If the continued product of three numbers in G.P. is 216 and the sum of their products in pair is 156. Find the numbers.

62. ## Geometric progression

Three numbers whose sum is 15 are in A.P. If 1,4,19 be added to them respectively the resulting number are in G.P find

63. ## Geometric progression

Fourth term of a G.P. is 40 and the tenth term is 2560. find the seventh term.

64. ## Geometric progression

If 5th and 8th terms of a G.P. be 48 and 384 respectively. find the G.P.

65. ## Geometric progression

Fin the sum of the series 1+2+4+8+....to 12 terms.

66. ## Geometric progression

Find the sum of the series 4+44+444+....to n terms.

67. ## Geometric progression

Find the sum of the series 0.5+0.55+0.555+....to n terms.

68. ## Geometric progression

Find the sum of 8 terms of the G.P. 3,6,12,24,..... .

69. ## Geometric progresson

If a be the first term, b the nth term and p the product of n terms of G.P.,show that p2=(ab)n.

70. ## Geometric progression

Find the nth term and the sum to n terms of the series: 1+(1+2)+(1+2+2>2)+.....

71. ## Geometric progression

Find the sum of the geometric series 1+1/2+1/4+1/8+.....to 12th terms.

72. ## Geometric progression

Find the sum of series: 1+3x+9x2+27x3+...to

73. ## Geometric progression

Find the sum upto infinite: 2/5+3/5>2+2/5>3+3/5>4+2/5>5+3/5>6+.....

74. ## Geometric progression

The first term of an infinite geometric progression is 1 and the sum of the terms is 13, find common ratio.

75. ## Geometric progression

The sum of infinite number of terms of a decreasing G.P is 4 and the sum of the squares of its terms to infinity is 1/3

76. ## Geometric progression

Find the sum to the n terms: 5+55+555+.......

77. ## Math

Express 0.54 as a rational number.

78. ## Math

Show that of all the rectangle inscribed in a given circle,the square has the max area

79. ## Average

In a class 20% students failed 60% students scored average marks and the remaining above average marks find number of students in the class ?

80. ## Rt

if a boy present age is 7 yr & his uncle present age is 31 after how many yr his uncle age was twice of his boy age

81. ## Maths

Find the volume of a cuboid whose base area is 10metercube and height is 6meter

82. ## Physics

A person can see an object in focus only if the object is no farther than 35 cm from the right eye and 58 cm from the left eye. Write a prescription for the refractive powers ℛ (in diopters) for the person's corrective lenses. right eye dpt left eye dpt

83. ## Science

Expression for bernaulli theorem

84. ## math

If P (x, y) is a point on da line segment joining da points A(6,8) & B(-8, 6) prove that x+y=2

85. ## Algebra

is (x^2-a^2) the same as (x-a)^2. If so would (x^2-a^2)/x-a = x-a?

86. ## Physics

find the angle of banking of curved railway track of radius 600m if the maximum saftey sppedd limit is 54;km/hr .if distance beetween the rails is 1.6m find elevation ofvthe outervtrack above the inner track

87. ## geometry

if a circle is divided into 12 parts then what is the measure of each part in terms of radius

subject: math. distance=8m,speed=42/5centi/sec,time=?

89. ## KCC

An electron has a speed of 500 m/Sec with uncertainty of 0.002% what is the uncertainty in position?

90. ## physics

which type of forces does a proton exerts on a proton inside nucleus? my answer-repulsion force

91. ## English

If they or someone nearby had only known the simple rules of water safety. How to make a question of this passage?

sin

93. ## Physical Chemistry

The weight of one atom of uranium is 238amu. Its actual weight is ......g.

94. ## Physical Chemistry

The weight of one atom of uranium is 238amu. Its actual weight is ......g.

95. ## Mathematics

A cylindrical tube, open at both ends, is made of metal. The internal diameter of the tube is 10.4cm and its height is 25 cm. If thickness of the metal is 8mm everywhere, calculatd the volume of metal in the cylinder

96. ## s.p s

How we can write 26th December 2014 in five letters

97. ## physics

Define Newton's first law .

98. ## physics

Newton first law provides the measure of ???

99. ## math

find twonumbers such that the sum of twice the first and thric the second is 92 and four times the exceeds seven times the second by 2