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Answers posted by ranjani.hogwarts
Questions
11019
answers
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0
votes
Which type of element do not ohm's law
answered
Jun 20, 2017
Did you mean which element does not follow ohm's law. Answer: The tungsten filament in the bul...
0
votes
The weight of the body which is charged by rubbing it weight becomes increa
answered
Jun 20, 2017
It may increase or decrease slightly as it may loose or gain electrons . So a slight weight may in...
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votes
(1,1/2,1/4,1/8,1/16,1/32) write in set builder from
answered
Jun 20, 2017
It can be observed that 1=1¹,1/2 =(1/ 2)1, 1/4 =(1/2)2, 1/8 = (1/2)3, 1/16 = (1/2)4, and (1/32)&nb
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votes
Force of attraction between a parallel plate capacitor
answered
Jun 20, 2017
Please refer https://clay6.com/qa/23790/the-force-of-attraction-between-the-plates-of-parallel-plate...
0
votes
In an examination a candidate has to secure 40% of the marks to pass. If a
answered
Jun 20, 2017
Student has to secure 40% marks to pass secured - 190 marks failed by- 10 marks Let...
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Sketch a graph to show how charge Q given to a capacitor of capacitance C v
answered
Jun 19, 2017
Charge q given to a capacitor of capacitance C varies directly with potential di...
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what is the force of repulsion between two charges of 1c each kept 1m apart
answered
Jun 19, 2017
We know that F=1/4π
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when kept in electric field does a proton move from hogher potential to the
answered
Jun 19, 2017
Whenever an object gains or loses electric charge this actually corresponds to losing/gaining elec...
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votes
Two balls are thrown simultaneously.a vertically upwards with a speed of 20
answered
Jun 19, 2017
Please refer https://clay6.com/qa/80145/two-balls-are-thrown-simultaneously-a-vertically-upwards-wi...
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votes
Two balls are thrown simultaneously.a vertically upwards with a speed of 20
answered
Jun 19, 2017
Two balls A and B are thrown simultaneously.Therefore let us assume They meet at a point at height...
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votes
Calculate the percentage error in the volume of a sphere,when the error in
answered
Jun 19, 2017
Please refer https://clay6.com/qa/20264/if-the-error-in-the-measurement-of-radius-of-a-sphere-is-2-t...
0
votes
equation of a circle with 3 points
answered
Jun 19, 2017
Please do mention the three points to find the equation of circle. The formula to find out the equa...
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If A={1,2,3},B={4,5,6},which of the following are relation from A to B ? Gi
answered
Jun 19, 2017
Refer https://clay6.com/qa/80077/if-a-b-which-of-the-following-are-relation-from-a-to-b-gi
0
votes
If A={1,2,3},B={4,5,6},which of the following are relation from A to B ? Gi
answered
Jun 19, 2017
WE have A × B = {(1, 4), (1, 5), (1,6),(2, 4), (2, 5),(2,6),(3,4),(3,5),(3,6)}. Since n (A×B ) =
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votes
Find the equation of the straight line passing through the point (5,7) maki
answered
Jun 19, 2017
Let the equation of the line be x/a + y/a =1 since it passes through (5,7) 5/a +7/a = 1 1...
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x=root3-2 find (x+1/x)3
answered
Jun 19, 2017
x = √3 -2 1/x = 1/(√3 -2) x [(√3 + 2)/(√3 + 2)] = (√3 + 2) / (-1) = - (√3 + 2) (x + 1/x) = (√
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votes
cofficient of x3 in (5-3x-2x2) (x2+7x)
answered
Jun 19, 2017
(5-3x-2x²)(x²+7x)=5x²+35x-3x³-21x²-2x^4-14x³ =-2x^4-17x³-16x²+35x fourth-degree polynomial
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votes
Numerator of a rational number is 7 less than the denominator. If the denom
answered
Jun 19, 2017
Refer https://clay6.com/qa/80127/numerator-of-a-rational-number-is-7-less-than-the-denominator-if-th...
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votes
Numerator of a rational number is 7 less than the denominator. If the denom
answered
Jun 19, 2017
Let the denominator be X so that numerator is x-7 Old rational number=x-7/x and new rational numbe...
0
votes
What is the value of average electric energy density in electromagnetic wa
answered
Jun 19, 2017
Please refer https://clay6.com/qa/30084/s1-in-an-electromagnetic-wave-the-average-energy-density-of...
0
votes
Find the value of 100dyne which is based upon metre, kilogram and minute as
answered
Jun 19, 2017
Force=Mass*Accelaration F=m*D/Time^2 =Kgm/s^2 1 newton=1 Kg*1m/(1/60)^2 1 newtom=1Kgm/3600...
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votes
Form the differential equation of the family of circles having centre on y
answered
Jun 18, 2017
Please refer https://clay6.com/qa/946/form-the-differential-equation-of-the-family-of-circles-havin...
0
votes
a bag contain 4 red and 3 green balls determine the number of ways in which
answered
Jun 17, 2017
C(n,r)=n!/r!*(n-r)! The number of in which 2 green balls can be selected is 3C2 The n...
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votes
74. Force acting on an electron in a Bohr orbit with quantum number n is pr
answered
Jun 16, 2017
Force acting on a electron, F=1/4π
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votes
the equation of a circle passing through (0,0),(0,a),(a,0)
answered
Jun 16, 2017
The general equation of circle is x²+y²+2gx+2fy+c=0 where center is (-g,-f) Give
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votes
In a group of 1000 people,there are 750 who can speak Hindi and 400 who can
answered
Jun 16, 2017
Pls refer https://clay6.com/qa/80075/in-a-group-of-1000-people-there-are-750-who-can-speak-hindi-and...
0
votes
In a group of 1000 people,there are 750 who can speak Hindi and 400 who can
answered
Jun 16, 2017
Let H and B is the set of people speaking Hindi and Bengali respectively. It is given that&...
0
votes
Let us list some of the factors which could possibly influence the speed of
answered
Jun 16, 2017
Please refer https://clay6.com/qa/69534/let-us-list-some-of-the-factors-which-could-possibly-influe...
0
votes
The velocity of particle is given. By v=5-t^2 find average acceleration in
answered
Jun 15, 2017
Please refer https://clay6.com/qa/10970/the-velocity-of-a-particle-is-given-by-v-5-t-2-m-s-the-aver...
0
votes
A mixture oh helium gas(atomic mass=4amu) and 1 mole of argon gas (atomic m
answered
Jun 15, 2017
Both gases are at same temperature and thus vrms∝1/√M where M is molar mass of the gas Hen
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votes
Young'son double split expernment is carried out by using green, red and bl
answered
Jun 15, 2017
Fringe width, β=λD/d and hence β∝λ Since λred>λgreen>λblue So βred>βgreen>βblue
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votes
Two capacitors c1 and c2 are charged to 120 V and 200V respectively. It'
answered
Jun 15, 2017
Please refer https://clay6.com/qa/14440/two-capacitors-having-capacitances-c-1-and-c-2-are-charged-w...
0
votes
find the hcf of(x3_3x+2) (x2_4x+3)
answered
Jun 15, 2017
Using factorisation method: x^2-3x+2=x^2-2x-x+2=(x-1)(x-2) x^2-4x+3=x^2-3x-x+3=(x-1)(x-3) Now tak...
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votes
The point where three faces of a figure meet is known as _______________.
answered
Jun 15, 2017
Vertex is the point
0
votes
Find the perpendicular distance of the point (6,4) from the y axis?
answered
Jun 15, 2017
Consider a Point P(x,y) on the coordinate plane Perpendicular distance of the point P(x,y) from ...
0
votes
What is the probability that a non leap year has 53 Mondays
answered
Jun 15, 2017
We know that there are 52 weeks in a year. There are 7 days in a week 52 weeks will be...
0
votes
A ball is dropped at a height of h measured from the ground. If the coeffic
answered
Jun 15, 2017
Please refer https://clay6.com/qa/11560/a-ball-is-dropped-from-a-height-of-h-from-ground-if-the-coe...
0
votes
are logarithmic functions are strickly increasing function
answered
Jun 14, 2017
This is the logarithmic Function: f(x) = loga(x) a is any value greater than 0, except 1 ...
0
votes
Two concentric circular coils A and B have radii 25 cm and 15 cm and carry
answered
Jun 14, 2017
Given : for coil A: VA=25cm=0.25m nA=24nA=24 IA=10AI=10A For coil B:...
0
votes
if a number of circles touch a given line segment PQ at a point A, then thei
answered
Jun 14, 2017
Given PQ is a line segment at Point A, Let O,r tocuhed PQ at A WE know that Radius is perpendi...
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votes
A man walking in rain at a speed of 3kmph find rain to be falling verticall
answered
Jun 13, 2017
Let the velocity of rain be x i + y j, where i is the direction in which man is walking and j is t...
0
votes
Benzene and toluene form two ideal solution A and B at 313 K. Solution A (t
answered
Jun 13, 2017
Let Pb be the Vapour pressure of benzene Let Pt be the Vapour pressure of toluene hence, Pb=60mm ...
0
votes
Find equation of the circle whose centre lies on the x axis and passing thr
answered
Jun 13, 2017
The general equation of the circle is x²+y²+2gx+2fy+c=0 (1) Center lies on X axis .
0
votes
If a^1/x = b^1/y = c^1/z and a,b,c are in GP then x,y,z are in
answered
Jun 12, 2017
Let $a,b,c$ are in GP $\large\frac{a^1}{x} =\frac{ b^1}{y} = \frac{c^1}{z}$$=k$ $b^2=ac$ $a=...
0
votes
In an experiment,the reading for the time period of a simple pendulam are 2
answered
Jun 12, 2017
Please Refer https://clay6.com/qa/69919/we-measure-the-period-of-oscillation-of-a-simple-pendulum-in...
0
votes
A can do 1/3 of the work in 5 days and B can do 2/5 of the work in 10 days.
answered
Jun 12, 2017
1/3 of work is done by A in 5 days. Therefore Whole work will be done by A in 15 days. ∵ 2/3
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votes
We measure the period of oscillation of a simple pendulum. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71s and 2.80 s. Calculate the absolute errors, relative error or percentage error.
answered
Jun 12, 2017
The mean period of oscillation will be T=2.63+2.56+2.42+2.71+2.8/5 =2.62 sec The errors in the m...
0
votes
The maximum deviation produced by a hollow prism filled with certain liquid
answered
Jun 12, 2017
μ=sin(A+δm2)sin(A/2)=sin45/sin15=1/√2/√3-1/2√2) Therefore refractive index of liquid is 2.1
0
votes
two point charges having equal charges separated by 1m
answered
Jun 12, 2017
The question seems to be incomplete, The question should be Two point charges having equal cha...
0
votes
There are two metallic spheres of same radii but one is solid and the other
answered
Jun 12, 2017
They can be charged equally. ITs because the two spheres possess equal capacitance. The ca...
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