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Answers posted by ranjani.hogwarts
Questions
11019
answers
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best answer
0
votes
A student is able to throw a ball vertically to maximum height of 40m. The
answered
Jun 29, 2017
Max height = u^2/ 2g which is equal to 40. ..and for maximum horizontal distance θ = 45 degree ..
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Set up an arrangement of three point charges +q+2q and xq separated by equa
answered
Jun 28, 2017
We know that U=1/4 πε0*q1q2/r^2 =1/4 πε0 * (q)(2q)+(q)(xq)+(
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A body is thrown horizontally from a tower,100 m high with velocity 10 m/s.
answered
Jun 28, 2017
We know that V=U+at BOdy moving at an angle 45 with horizontal axis Let V be Vx and U be Uy Vx=...
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Calculate coulomb force btw proton and electron separated by 0.8×10^-15 ?
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Jun 28, 2017
F=9*10^9*1.6*10^-19*1.6*10^-19/0.8*10^-15*0.8*10^-15=3.6*10^2N
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calculate coulomb force
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Jun 28, 2017
The Coulomb's force between two or more charged bodies is the force between them due to ...
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In 1.0s, a particle goes from point A to point B, moving in a semicircle of
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Jun 28, 2017
Average velocity will be V=not displacement /time Provide the figure so that the avg velocity can...
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A rectangle is inscribed in a semicircle of radius r with one of its sides
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Jun 28, 2017
Let ABCD is a rectangle of length 2x and breadth y that is inscribed in a semicircle of radius r a...
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What happen to kinetic energy if mass is halved and speed is doubled?
answered
Jun 28, 2017
Kinetic energy will be 1/2mv² If mass is halved then kinetic energy will also be half o
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two equal and opp. point charges are seperated by a certain distance. find
answered
Jun 26, 2017
The point would lie on the straight line joining the two charges and on the perpendicular bisector o...
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10 maga volt is equal to
answered
Jun 25, 2017
1 volt=0.001KV 1MV=1000000V 10MV=10000000V
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Radius R has charge Q distributed over it if it rotate with angular velocit
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Jun 25, 2017
Total charge will be q Angular velocity=w Avg current=total charge passing through a point in ...
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The medians of a triangle are concurrent
answered
Jun 25, 2017
The medians of a triangle are concurrent and the point of concurrence, the centroid, is one-third ...
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Using vector method, prove that if two medians of a triangle are equal, the
answered
Jun 25, 2017
REfer https://clay6.com/qa/4497/using-vector-method-prove-that-if-two-medians-of-a-triangle-are-equ...
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votes
Using vector method, prove that if two medians of a triangle are equal, the
answered
Jun 25, 2017
Please refer https://clay6.com/qa/4497/using-vector-method-prove-that-if-two-medians-of-a-triangle-...
0
votes
Three capacitors each of capacity c are connected in series. The resultant
answered
Jun 25, 2017
The answer will be C/3 1/Cseries=1/C1+1/C2+1/C3….….…. Now C1=C
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The electrical intensity inside a charged hollow sphere is
answered
Jun 25, 2017
Refer https://clay6.com/qa/79408/the-electrical-intensity-inside-a-charged-hollow-sphere-is
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The electrical intensity inside a charged hollow sphere
answered
Jun 25, 2017
Please refer https://clay6.com/qa/79408/the-electrical-intensity-inside-a-charged-hollow-sphere-is
0
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Two monochromatic light waves of amplitudes A and2A interfering at a point
answered
Jun 24, 2017
7A^2..............
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A diffraction grating has 2000 lines/cm,what is its grating element
answered
Jun 24, 2017
Grating element=1/N=1/2000=5*10^-3cm =2×10−4cm =2×10−4cm
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Two mirrors are inclined at an angle € . Light ray is incident parallel t
answered
Jun 23, 2017
The two mirrors are inclined at an angle θ. The ray diagram has been drawn for an arbitrary a
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Smallest division on the main scale if vernier callipers is 0.5 mm . Verni
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Jun 23, 2017
Given that the 25 divisions are equal to 24 main scale division. Thus each division of vern...
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votes
A and B together have Rs. 1210. If 4/15 of A's amount is equal to 2/5 of B'
answered
Jun 23, 2017
4/15A=2/5B A=(2/5*15/4)B A=3/2B A/B=3/2 Or A:B=3:2 B's Share will be 2/5 *1210=484
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a particle starting with certain initial velocity and uniform acceleration
answered
Jun 23, 2017
The displacement of the body in first 2 sec =12m, Let the initial velocity = u(say) ,...
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votes
Astronomical unit is the average distance between the sun and the earth, ap
answered
Jun 23, 2017
Please refer https://clay6.com/qa/80316/astronomical-unit-is-the-average-distance-between-the-earth...
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votes
Solve Arctan{1/2tan2A}+arctan(cotA)+arctan(cot^3 A)
answered
Jun 23, 2017
By identity, tan(2A) = 2*tan(A)/(1 - tan²A) ==> (1/2)*tan(2A) = tan(A)/(1 - tan²A)&
1
vote
A particle has an initial velocity of 9m/s due east and a constant accn of
answered
Jun 23, 2017
Here the particle velocity will become zero in 4.5 seconds, as V=U+at 0=9–2*t t=4.5sec. Di
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votes
The force on an electron kept in an electric field is f what will be the ma
answered
Jun 22, 2017
Please refer https://clay6.com/qa/58283/the-force-on-an-electron-kept-in-an-electric-field-in-a-par...
0
votes
verify langrange mean value theorem for sinx-sin2x in [0,pi]
answered
Jun 22, 2017
Please refer https://clay6.com/qa/2382/verify-mean-value-theorem-for-each-of-the-function-f-x-sin-x...
0
votes
Radius of ball is (5.2 +_ 0.2). The percentage error in volume of the ball
answered
Jun 22, 2017
volume of sphere=4/3πr³ △V/V=3*△r/r =3*0.1/5.2 =3*0.019 =0.05769 =+-0.057
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an assembly of charges +q,-q,+q,-q..... are at positions x=1,x=2m,x=4m,x=8m
answered
Jun 22, 2017
Incomplete question
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diferential equation of families of parabola with vertices along x axis
answered
Jun 22, 2017
since parabola has vertices along x axix the equation will be, y²=4ax............1 diffrentiating
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Find the Midian first 15 odd numbers
answered
Jun 22, 2017
The first 15 odd numbers are 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 The sum of first 15 odd number...
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what is the work done in moving a 2c point charge from corner A to corner B
answered
Jun 22, 2017
Point A and B are equidistance from the center ,so they are equipotential points. Therefore no work...
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Role of semiconductor in solarcell
answered
Jun 22, 2017
Solar cells or the so called photo-voltaic (PV) cells work on the principle of photo electric effect...
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votes
Astronomical unit is the average distance between the earth and sun ,apptox
answered
Jun 22, 2017
1 km = 1000 m, thus 1 AU = 1.5 × 1011 m. We multiply two conversion factors, one of which conver
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votes
The fixed cost of a new product is Rs.18,000 and the variable cost is Rs.55
answered
Jun 22, 2017
Fixed cost is 18000 Variable cost is Rs.550 P(x)=4000-150x 4000-150x=18000+550x 4000-18000=550x+...
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votes
How do we get to know till where we have to differentiate a particular dif
answered
Jun 22, 2017
In order to differentiate an equation ,a differential can be thought of as a derivative where...
0
votes
Reduce the following equation to the normal form X + 5 equal to zero
answered
Jun 21, 2017
The equation in normal form is given as xcosα +ysinα=p The given equation is x+5=0 This can be
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votes
The average age of the 30 students of the class is 12 years. The average ag
answered
Jun 21, 2017
Let average of the remaining student be y. Then from questions ( 5 x 10 ) + ( 5 x 14) + 20y...
0
votes
four point charges are located at the corners of a square with sides of len
answered
Jun 21, 2017
Please refer . https://clay6.com/qa/27071/four-point-charges-1-mu-c-1-mu-c-1-mu-c-1-mu-c-are-place...
0
votes
If the sum of the length of the hypotenuse and a Side of a right angled tri
answered
Jun 21, 2017
Let hypotenuse be h , one side be p So , h + p = C (constant) area A = 1/2 p *b = 1/2p root(h2...
0
votes
A block of mass 2 kg rest on a plane inclined at 30 degree with the horizon
answered
Jun 21, 2017
Refer https://clay6.com/qa/80228/a-block-of-mass-2-kg-rest-on-a-plane-in-plant-at-30-degree-with-the...
0
votes
A block of mass 2 kg rest on a plane in plant at 30 degree with the horizon
answered
Jun 21, 2017
We know that F=mg*sinθ =2*10*sin30° (g=10 m/s) =2*10*1/2 =10 N Therefore Frictional forc
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votes
Define the term dielectric constant of a medium in terms of capactance of
answered
Jun 21, 2017
Dielectric constant of a medium is defined as ratio of the capacitance of the parallel plate capac...
0
votes
A body moves with a velocity 3 meters per second due East and then turns du
answered
Jun 21, 2017
acceleration = (vf - vi)/t = ( 3m/s to the north - 3 m/s to the east)/(6s) Letting east be ...
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votes
The equation of state for a real gas at high temperature
answered
Jun 21, 2017
p V = n R T p = absolute pressure (not gage pressure) V = volume n = amount of substance (usual...
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Sum of distance of a point from two perpendicular lines is 3 the area encl
answered
Jun 21, 2017
Let these lines be the x and y axes. |x| + |y| = 3 in A x+y = 3, y = 3-x in...
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votes
refracting angle of prism is 60° .its angle of minimum deviation is 30°.
answered
Jun 20, 2017
We can use the formula Least deviation angle=2i-A 30°=2i-60° 2i=90° i=45° Therefor
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votes
find the maximum and values of f(x)=secx+logcosx2 0
answered
Jun 20, 2017
f(x)=secx+log cosx² f (x) = secx + 2 log cosx Therefore, f′ (x) = secx tanx – 2 tanx = tanx (secx
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votes
a swimmer wishes to reach directly opposite bank of a river flowing with a
answered
Jun 20, 2017
we know that v=D/t Swimmer can swim with velocity of 10m/s River flowing with v...
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