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A non conducting disc of radius a and uniform positive surface charge density σ is placed on the ground with its axis vertical. A particle of mass m and +ve charge q is dropped along the axis of the disc from a height H with ...

x^log9x>9 implies ...

Find the number of eight digit numbers in which the fifth digit is numerically greatest and the numbers to the left and right of it are in decreasing order (not strictly decreasing)... (repetition allowed)... ...

In a vernier calliper n divisions on the main scale correspond to n+1 no the vernier scale. Each division of the main scale is of a unit. What is the least count? ...

wat is skin effect?????????/ someone pls explain......... ...

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solve one by one. not randomly... please. 1]the total 8 digit numbers of the form x_{1}x_{2}x_{3}x_{4}x_{5}x_{6}x_{7}x_{8} such that x5 is the greatest digit and digits towards the left and right of x5 are in decreasing order ...

A 10 cm column of air is trapped by a 8 cm column of Hg in a capillary tube.....the tube is horizontallly fixed as shown in the figure at 1 atm pressure. Calculate the length of air column when the tube is fixed: *Image* (a) ...

A.B=0 ; A.X = c,c≠0,A x X = B find X ...

An alkane C6H14 gives two monochloroalkanes when chlorinated . what is structure of the original alkane? ...

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Give the reactions ........................ *Image* adapted from MATER JI ...

a rod of weight, w is supportd by two parallel knife edges A and B and is in equilibrium in a horizontal position. the knives are at a distance of d from each other. the centre of mass of the rod is at a distance x from A. th ...

a hole is dug along the centre of the earth along the diameter, and a body of mass m is dropped in the tunnel, calculate the velocity of body at the centre of the earth , given that gravitaional potential at the centre of the ...

are u getting 0.92????? *Image* it is a 2d picture of unit cell ...

A: isothermal expansion of ideal gas against vacuum must be simultaneously adiabatic R:the work done by system in above process is Zero. ...

A addition of dilute HNO3 to saturated soln of PbS increases solujblity of PbS R:Pb(NO3)2 and other nitrate salts are highly soluble in water ...

assertion n reason statement 1 ;acceleration due to gravity gos on decreasing as we goes frm equqtor to pole statement 2:a part of weight is used to provide the centripetal force for rotating the body abt n-s axis of earth ...

pls tell me the last date fr bit sat applications issue ......... ...

consider a body projected in horizontal direction at certain heightwith velocity v 1trajectories possiblity a)circular p)total mech energy<0 b)ellipse (not a circle) q)v=v0 (c)parabola r)v<vo (d)hyperbola s) v>ve t)v ...

For each natural number K, let Ck denote the circle with radius k centimeters and centre at the origin. On the circle Ck , a particle moves k centimeters in the counter clockwise direction. After completing its motion on Ck, ...

1)The minute hand of a clock is 10 cm long...How far does the tip of the hand move in 20 minutes? 2)THe no. of sides in 2 regular polygans are 5:4 and the difference between their angles is 6 degrees, find the no. of sides in ...

Statement 1: If A and B are two matrices such that AB = A, then B is a square matrix and Statement 2: The product AB exists only if A is of order m × n and B is of order n × n. 1. Statement 1 is True, statement 2 is True; s ...

HAD SOLVED THIS 1 IN SUM OTHER FORUM...... In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures t1 and t2. The liquid columns in two arms have heights l1 and l2 respectively. The coe ...

Three rods of identical cross sectional area are made up of same metal from the sides of an isosceles triangles ABC, right angled at B. The point A and B are maintained at temperatures T and 2 T respectively. In the steady st ...

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The volume percentage of Cl2 at equilibrium in the dissociation of PCl5 under a total pressure of 1.5 atm is? (Kp=0.202) answer:25.5 % ...

Q 26 mein got bowled *Image* ...

Two sides of a triangle are of lengths 2a and 2b and contain an angle of 120°. If the angle opposite the side 2a is θ, tan θ is equal to (a) a 2 /a + 2b (b) a 3 /2a + b (c b 3 /a + 2b (d) b 3 /2a + b ...