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Answers posted by vijayalakshmi.r
Questions
1231
answers
9
best answers
0
votes
In spite of being non-polluting, why are there great apprehensions in using nuclear energy for generating electricity ?
answered
May 26, 2016
The safe disposal of the nuclear wastes and the harmful radiation if there is an accident are the fa...
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votes
Oscillations and waves
answered
May 26, 2016
I = [1/12]Ml^2+Md^2 d= l/4 Therefore I = Ml^2/12 + Ml^2/16 = 7Ml^2/48 Time period T = 2pi sq rtof...
0
votes
the center of a circle (-6,4)if one end of a diameter of a circle is at (-12,8) then the other end is at
answered
May 22, 2016
The centre is the midpont of the line joining the two points of the diameter. x+(-12)/2 = -6 there...
0
votes
why do magnetic field lines prefer to pass through iron than through air ?
answered
May 22, 2016
https://clay6.com/qa/59905/why-do-magnetic-lines-of-force-prefer-to-pass-through-ferromagnetic-subst...
0
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Two point particles of same mass M are attached to two ends of a massless non-conducting rigid rod of length l. The charge on particle are +q and -q. The rod is held in a region of uniform electric field E making an angle θθ( very small) with E. The time t , after itself parallel to electric field after releasing it is :
answered
May 22, 2016
https://clay6.com/qa/23821/two-point-particles-of-same-mass-m-are-attached-to-two-ends-of-a-massless...
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votes
calculate longest wavelenth of light required to remove an electron from 1st excited state of He+ ion?+
answered
May 19, 2016
En = -21.76 x 10^-19xZ^2/n^2 n = 1 and z = 4 Therefore En = -21.76x10^-19 x4/1^2 =.147.04 x10^-19J...
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Finding angle between two vector when their sum is given
answered
May 18, 2016
(a+b)^2 = a^2+b^2+2|a||B|cosx 8^2=4^2+5^2+2×4×5cosx Therefore cosx = 23/40 x= cos^-1(23/40)
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reduce the equation of the plane to the normal form
answered
May 18, 2016
x(1/√1^2+2^2+3^2)+y(2/√1^2+2^2+3^2)+z(-3/√1^2+2^2+3^2)=6/√1^2+2^2+3^2 x(1/√14)+2y/√14 -3z/√14 = 6/√
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A garden pea plant produced round green seeds. Another of the same species produced wrinkled yellow seeds. Identify the dominant traits.
answered
May 18, 2016
The dominant traits ate round and yellow seeds.
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Why an earthworm is called a detritivore?
answered
May 18, 2016
A detritivore feeds on plant and animal remains and other dead matter. Since earthworm f...
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9. Find the average energy stored in a 60 cm length of a laser beam operating at 4mW.
answered
May 18, 2016
https://clay6.com/qa/29927/find-the-average-energy-stored-in-a-60-cm-length-of-a-laser-beam-operatin...
0
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Name an organism where cell division is itself a mode of reproduction.
answered
May 18, 2016
Micro organisms like bacteria and fungi reproduce by the method of cell division
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why is tubectomy considered a contraceptive method?
answered
May 18, 2016
In this method the fallopian tube is blocked by surgical methods, so that the entry of sperms into t...
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10. A plane electromagnetic wave in the visible region is moving along the zz direction. The frequency of the wave is 0.5×1015Hz0.5×1015Hz and the electric field at any point is varying sinusoidally with time with amplitude of 1V/m1V/m. Calculate the average values of densities of the magnetic field. Report Error
answered
May 18, 2016
https://clay6.com/qa/29930/a-plane-electromagnetic-wave-in-the-visible-region-is-moving-along-the-z-...
0
votes
why law of floatation is valid?
answered
May 13, 2016
It is not the weight of the object but the weight of the liquid that is displaced by the object
0
votes
Find the equation of the plane passing through the points (3,4,1) and (0,1,0) and parallel to the line
answered
May 13, 2016
https://clay6.com/qa/11487/find-the-equation-of-the-plane-passing-through-the-points-3-4-1-and-0-1-0...
0
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Show that the rectangle of maximum area that can be inscribed in a circle is a square.
answered
May 13, 2016
https://clay6.com/qa/4918/show-that-the-rectangle-of-maximum-area-that-can-be-inscribed-in-a-circle-...
0
votes
Physics motion laws of motion
answered
May 13, 2016
Since the particle slides from rest, the initial velocity is 0 when u = 0, t = n hence Sn = (1/2)a...
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Let x = {1,2,3} and y = {7,10,13,18}. Show that the function f : x → y defined by f(x) = 3x+4 is one to one but not onto.
answered
May 13, 2016
f(1) = 7, f(2) = 10, f(3) = 13 But the element 18 does not have a pre image. Hence it is one to one...
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Find the equation of the plane passing through the point (I, -1,2) and perpendicular to each of the following planes: 2x +3y - 3z = 2 and 5x – 4y + z = 6
answered
May 13, 2016
https://clay6.com/qa/4914/find-the-equation-of-the-plane-passing-through-the-point-1-1-2-and-perpend...
0
votes
Show that the function f : Z → Z defined by f(x) = x2 is neither one to one nor onto.
answered
May 13, 2016
https://clay6.com/qa/3988/show-that-the-function-defined-by-is-neither-one-one-nor-onto- Use the ab...
0
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Mathematics question
answered
May 9, 2016
Let P(A) be the probability of drawing a black ball,P(A) = 7C2/16C2 let P(B) be the probabili...
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linear equations in two variables
answered
May 8, 2016
If the system of equations has a unique solution, then [a1/a2]is not equal to [b1/b2] therefore [a/...
0
votes
trignometry unit 1 regarding the 15th question
answered
May 8, 2016
The least numerical value either positive or negative of an angle theta, is called principal value: ...
0
votes
derivation of toppling of hexaonal object
answered
May 5, 2016
Now moment of inertia of the rod about the axis which is passing through O and perpendicular to th...
0
votes
Probability..I want answer of this ASAP.
answered
May 5, 2016
P(E1) = P(E2) = P(E3) = 1/3 P(A/E1) = [1C1x3C1]/6C2 = 3/15 = 1/5 P(E2) = [2C1x1C1]/4C2 =1/3 P(E3)...
0
votes
If A = ( 1 2 4 2), find the value of k if 2A = k A
answered
Apr 28, 2016
If 2A = KA, then K = 2
0
votes
Find the particular solution of the differential equation dy/dx + y cot x = 4x cosec x, given that y = 0 when x =
answered
Apr 27, 2016
https://clay6.com/qa/778/find-a-particular-solution-of-the-differential-equation-frac-y-cot-x-4x-cos...
0
votes
One kind of cake requires 200 g of flour and 25 g of fat, and another kind of cake requires 100 g of flour and 50 g of fat. Find the maximum number of cakes which can be made from 5 kg of flour and · 1 kg of fat assuming that there is no shortage of the other ingredients used in making the cakes. Formulate the above as a linear programming problem and solve graphically.
answered
Apr 27, 2016
https://clay6.com/qa/203/one-kind-of-cake-requires-200g-of-flour-and-25g-of-fat-and-another-kind-of-...
0
votes
Find a unit vector in the direction of a = 2i -3j + 6k
answered
Apr 24, 2016
unit vector a = avector/ |a| |a| = sq rt of 2^2+(-3)^2+6^2 = 7 therefore unit vector a = [2i-3j+6k...
0
votes
a window consists of rectangle surmounted by a semicircle. find the shape of rectangle.
answered
Apr 24, 2016
https://clay6.com/qa/693/a-window-is-in-the-form-of-a-rectangle-surmounted-by-a-semicircular-opening...
0
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2 dice are rolled and the number turned up are reserved. Find the sample space for the experiment . I want it as soon as possible
answered
Apr 19, 2016
{(1,1,).(1,2),(1,3),!,4),(1,5),(1,6), (2,1),(2,2...(66)} A total of 36
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votes
An unbiased coin is tossed three times in succession. What is the probability of obtaining Tail’ at once?
answered
Apr 16, 2016
P(of getting head) = 1/2 x1/2x1/2 = 1/8 Hence P( getting tail at least once) = 1-1/8 = 7/8
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votes
The coordiates of the foci of an ellipse are (0, 4) and the equation of its directrices are y = 9. Find the length of the latus rectum of the ellipse.
answered
Apr 16, 2016
Given ae = 4 and a= 9, hence e = 4/9 Length of the latus rectum is 2b^2/a b^2=a^2(1-e^2) = ...
0
votes
Find the points on the curve y = x3 at which the slope of the tangent is equal to the y-coordinate of the point.
answered
Apr 16, 2016
Refer qn ID4644 in clay6 site
0
votes
Find the intervals in which the function f given by f(x) = sin x + cos x, 0 x 2 is strictly increasing or strictly decreasing.
answered
Apr 16, 2016
Refer QN ID 2514 in clay6 site
1
vote
a projectile is thrown
answered
Apr 13, 2016
Hmax = u^2sin^2x/2g, H will be maximum when sinx =1 Therefore Hmax=u^2/2g Rmax = u^2/g= 2h Hence ...
0
votes
It is often said that the world is witnessing right now a second industrial revolution, which will transform the society as radically as did the first. List some key contemporary areas of science and technology, which are responsible for this revolution,
answered
Apr 13, 2016
1. Reflection in ultrasonic waves 2. Faraday's laws of electromagnetic induction 3. Total internal...
0
votes
an experiment suceeds twice as often it fails
answered
Apr 13, 2016
The question seems to be incomplete. You have not mentioned the no: of trials. However you can refer...
0
votes
Please answer my question please sir
answered
Apr 13, 2016
∆CAB $AC^2+AB^2=BC^2$ -------(1) In ∆CAM $CA^2+AM^2=CM^2$-------(2) In ∆LAB $LA^2+AB^2=BL^2 $--
0
votes
If the Sides of a Right Angled Triangle are in A.P then the Tangents of Acute Angled Triangle is
answered
Apr 12, 2016
Let the sides of the right triangle be a and a-d and the hypotenuse be a+d by applying Pythagoras t...
0
votes
Find the condition that the line px + qy = 1 is,
answered
Apr 6, 2016
The qn seems to be incomplete. you have not mentioned the equation of the curve
0
votes
Find the values of a, b, c if,
answered
Apr 6, 2016
given equation is y = ax^3+bx^2+cx+5 since it passes through (-2,0) 0 = -8a+4b-2c+5-------(1) on ...
0
votes
If the normal to the curve y = f(x) at (3,4) makes an angle 3π\4 with the positive x-axis, then
answered
Apr 5, 2016
Given y = f(x) differentiating w.r.t x y' = f'(x) which is the slope of the tangent Hence the sl...
0
votes
Find the slope of tangent
answered
Apr 4, 2016
Let y = sin^-1(sinx), when x = 13π/3, y = 13π/3 Siny = sinx, on differentiating w.r.t x we get Cos
0
votes
Find the slope of tangent and normal
answered
Apr 4, 2016
x=2, then t^2+3t-8=2=0;hence t==-5 or 2 y=-1, then 2t^2-2t-5=0, hence t=2 or 1 dx/dT = 2t+3 and dy...
0
votes
If the line is tangent to the curve y^2 = px^3 + q at (2,3),
answered
Apr 4, 2016
The question seems to be incomplete. Can you give the equation of the line? You can refer clay6 QN ...
0
votes
Find the condition that the line px + qy = 1 is
answered
Apr 4, 2016
PX+qy=1 implies y = -(p/q)x+1 Given equation is xy=e^2 X(-(p/q)x+1)=e^2 On simplifying we get, p...
0
votes
the slope of the tangent to the locus y=cos-1(cosx) at x=-45
answered
Apr 2, 2016
y = cos^-1(cosx) , that is when x = -π/4,y = -π/4 Cosy = cosx, on differentiating w.r.tx we get,
0
votes
Find the slope of tangent
answered
Apr 2, 2016
f(x) = integration of f'(x)dx We know f'(x) is the slope of a tangent to the curve Hence sqrt of s...
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