Answers posted by vijayalakshmi.r

0 votes

answered Dec 29, 2016

..............................

0 votes

A brick measures 15 cm in length, 8 cm in breadth and 5 cm in height. How many bricks will be used to make a wall of length 15 m, breadth 10 m and height 8 metres?

answered Dec 29, 2016

..............................

0 votes

Moving coil galvanometre

answered Dec 29, 2016

Current sensitivity of galvanometer is the deflection produced for a unit curr...

0 votes

Electrical dimensions conductivity

answered Dec 29, 2016

https://clay6.com/qa/59521/what-are-the-dimensions-of-electrical-conductivity- Click the above link...

0 votes

What is polarization of light? State Brewster’s law for polarization and hence deduce an expression for polarizing angle.

answered Dec 27, 2016

..............................

0 votes

limits and derivatives

answered Dec 27, 2016

..............................

0 votes

If mirror is lying in a denser medium and viewed from a rarer medium , then the ratio of real radius of curvature to apparent radius of curvature equals

answered Dec 27, 2016

Is the refractive index of the denser medium u itself.

0 votes

Acceleration due to gravity

answered Dec 27, 2016

..............................

0 votes

finding the number of terms

answered Dec 27, 2016

..............................

0 votes

Gravitation - density of a planet

answered Dec 27, 2016

..............................

0 votes

complex numbers and quadratic equations

answered Dec 27, 2016

..............................

0 votes

finding the last two digits of a number

answered Dec 27, 2016

3^400 can be written as (1+2)^400 Now expand binomially 1+2x400+[400x400-1/2]2^2... 1+800 +800x39...

0 votes

prove that the rule OF exponents is true for every natural number ,n (ab)^n=anb

answered Dec 27, 2016

Let P(n) = (ab)^n = a^nb^n When n = 1 P(1) is (ab)^1 = a^1b^1 is true P(k) is (ab)^k = a^kb^k. le...

0 votes

the number of ten digits number that can be written by using the digits one and two

answered Dec 24, 2016

Every place has two chances of getting filled either with 1 or 2 That is 2^10 ways = 1024 ways

0 votes

physics dpp home work

answered Dec 24, 2016

Moment o f inertia od the disc with respect to axis = [1/2]mr^2 Therefore the angular momentum = Iw...

0 votes

Find equation of ellipse in each case

answered Dec 23, 2016

..............................

0 votes

we have refractive index of prism=1.53 which is placed in water of refractive index=1.3 if A =60° calculate minimum deviation in water

answered Dec 22, 2016

..............................

0 votes

distance between two parallel lines lx+my+n=0 and lx+my+n'=0

answered Dec 22, 2016

..............................

0 votes

magnetic effects of electric current

answered Dec 22, 2016

..............................

0 votes

the rate of work engine p is given by the expression P=5v+ (4500/v), where v is the speed of the engine. find the speed at which the rate of work P is the least

answered Dec 22, 2016

..............................

0 votes

mango in a tree as answerable

answered Dec 19, 2016

click this link for the answerhttps://clay6.com/qa/55293/there-are-eight-mango-trees-in-a-straight-l...

0 votes

travel through bending path

answered Dec 19, 2016

Velocity at the highest point is sq rt of gr given r = 20m, and g = 10m/s^2hence the maximum veloci...

0 votes

rIn a group of 760 persons 510 can speak Hindi, 360 can speak ...

answered Dec 19, 2016

(i) 110 (ii) 400 (iii) 250 Let OH be "only hindi" speaking and OE be "on...

0 votes

if pairs of straight lines x^2-2pxy-y^2=0 &x^2-2qxy-y^2=0

answered Dec 19, 2016

https://clay6.com/qa/57071/if-the-pair-of-straight-lines-x-2-2pxy-y-2-0-and-x-2-2qxy-y-2-0-be-such-t...

0 votes

electric field chapter name

answered Dec 17, 2016

An electric dipole is two charged objects, with equal but opposite electric charges, that are sepa...

0 votes

applications of electrical charges and fields

answered Dec 13, 2016

..............................

0 votes

electrical charges and fields

answered Dec 13, 2016

..............................

0 votes

what are the dielectrics substance ?

answered Dec 13, 2016

A dielectric is a substance which does not allow the flow of charges through it, but permits them to...

0 votes

moment of inertia of hydrozen molecule

answered Dec 13, 2016

Moment of inertia of the hydrogen molecule about the axis passing through the centre and perpendicul...

0 votes

Three cards are drawn from a pack of 52 find the probability that first 2 cards are king and the third card drawn is ace.

answered Dec 10, 2016

Three cards can be drawn in 52C3 ways A king can be drawn in 4C1 ways and an ace can be drawn in 4C...

0 votes

2011 percentage problem

answered Dec 10, 2016

x+20x/100 = 78, x+x/5 = 78 6x/5 = 78 x = 78[5/6] x = 65 Hence she saved $65 in February

0 votes

In Tae Kwon Do class, 40% of the students are boys. There are 18 fewer boys than girls. How many students are in the Tae Kwon Do class altogether?

answered Dec 10, 2016

60x/100 - 40x/100 = 18 20x/100 = 18 x/5 = 18 x = 18x5 = 90 There are 90 students altogether

0 votes

Nick has 20% more video games than Brian. Together, they have 55 video games. How many video games does Brian have?

answered Dec 10, 2016

x+x+20x/100 = 55 11x/5 = 55 x = 55x5/11 = 25 Hence Brian has 25 video games

0 votes

40% of Monica's coins are dimes. The rest are nickels. She has 36 more nickels than dimes. How many coins does Monica have altogether?

answered Dec 10, 2016

60x/100 - 40x/100 = 36 .0.4x = 36 x = 90

0 votes

4% of what number is 5 ?

answered Dec 10, 2016

[4/100]x = 5 x = 5x100/4 = 125 Hence the number is 125

0 votes

Classical mechanics derivation about time period of body having mass m and radius R

answered Dec 9, 2016

..............................

0 votes

How to find potential at centre of uniform conducting ring?

answered Dec 9, 2016

..............................

0 votes

Maximum height reached by the projectile

answered Dec 9, 2016

given H = 38m H = u^2sin^2x/2g, let g = 10ms^-1 38 = u^2 (1-cos^2x)/2g given ucosx = 32ms^-1...

0 votes

The question about the ages of father and son

answered Dec 9, 2016

Let the ages of the boy and father be x and y respectively, xy = 900 or x = 900/y After two years ...

0 votes

M44 Question 3 2011-2012

answered Dec 9, 2016

Let the C.P be x, given profit is 5%, therefore the S.,P = x+5x/100 = 105/100 If the C.P is 10% les...

0 votes

In a village A the number of men equals the number of women. The same is true for village B and also for village C. The number of men in village A plus the number of women in village B equal the number of women in village C. Six times the men of village A plus three times the women in village B equals four times the women of village B. What is the population of each village?

answered Dec 9, 2016

since the no: of men equakls the no: of women in the three villages, let the population in each vill...

0 votes

maths question from triangles

answered Dec 9, 2016

Sum of the sides of the triangle should be greater than the third side. Sum of the sides = 8+6=14 ...

0 votes

Three numbers are selected at random without replacement fron first six positive integers. Let x denotes the largest of the three numbers obtains. Find the probability distribution of x.

answered Dec 9, 2016

https://clay6.com/qa/69387/three-numbers-are-selected-at-random-with-out-replacement-from-first-six-...

0 votes

A student is ranked 13 from right and

answered Dec 6, 2016

since he is 13th from the left and 8th from right, there will be 12+8=20 students

0 votes

A man and his wife appear for an interview for two posts. The probability of husband’s selection is 1717 and that of the wife’s selection is 1515 . Find the probability that only one of them will be selected.

answered Dec 3, 2016

..............................

0 votes

find the parametir coordinates of any circle x2+y2+2x-3y-4=0

answered Dec 3, 2016

..............................

0 votes

Electric charges and fileds

answered Dec 3, 2016

Since 10% of electrons are removed, there is decrease in electronic charge.i.e., 1.6×10^-19×5×10^21C

0 votes

A dc source of emf \tiny E_1=100\ V and internal resistance \tiny r=0.5\ \Omega , a storage battery of emf \tiny E_2=90\ V and an external resistance R are connected as shown in figure . For what value of R no current will pass through the battery ?

answered Dec 2, 2016

Given E = 100V, r = 0.5ohms, e = 90V. For no current to flow through the battery, E/V = R+r/...

0 votes

Reproduction In plants

answered Dec 1, 2016

Dusting of pollen grains

0 votes

functions and limits

answered Nov 30, 2016

..............................

Ask Questions, Get Answers