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the gravitational potential energy of body at a distance r from centre of earth U .its weight at distance 2r from the earth ...

a train of mass m moves with a velocity v on the equator from east to west .if ω is the angular speed of earth about its axis and R is radius of earth ,then normal reaction acting on train is........ ...

a horizontal piece of pipeline carries a water in a streamline flow .at a point along the tube where cross sectional area is 1/100 sq.m, the water velocity is 2m/s and the pressure is 8000 pa. the pressure of water at another ...

To the passengers of an aeroplane flying from east to west on the equator, the sun appears motionless. Find the velocity of the aeroplane. Neglect the height of the aeroplane and take equatorial radius of the earth = 6000 km. ...

Find the minimum value of \frac{a^2}{cos^2x}+\frac{b^2}{sin^2x} ...

its said that earth falls by 5 metres for every 8 km that we travel from the north pole towards the south pole.can anybody explain me this? nishant bhai u dont answer this.i want an iit aspirant to answe this. ...

All points on the curve y2=4a(x+asin(x/a)) at which the tangents are parallel to the X axis lie on which curve ? I solved it and got x=aπ But answer is a parabola Please give the right solution :-) ...

I_1=\int_{0}^{1}{e^{-\frac{x^2}{2}}}dx I_2=\int_{0}^{1}{e^{-x^2}}dx I_3=\int_{0}^{1}{e^{-x^2}}cos^2xdx I_4=\int_{0}^{1}{e^{-x}}cos^2xdx ...

a straight line wire carrying current in negative z-axis .what is unit vector in yhe direction of magnetic field at the point P(1,2,3) ...

Let g'(x)>0 and f'(x)<0 for all x ε R then prove that g(f(x+1))<g(f(x-1)) ...

Find the weight of CH3COONa needed to add to 1L N/10 CH3COOH to obtain a buffer solution of pH=4 ? Ka=1.8 x 10-5 ...

Ques1) The lengths of three unequal rectangular block arein G.P. The volume of the block is 216 cm3 and the total surface area is 252 cm2 . Show that the length of the longest edge is 12 cm. Ques2)Show that 11 2 + 12 2 +13 2 ...

*Image* Ques1) In the above figure, an a meter bridge , two resistances in the gap are 5 ohms and 10 ohms. The wire resistance is 10 ohms. The emf of the cell connected at the neds of the wire is 5 volts and it's internal res ...

One problem that has been troubling me for ages now.. anyone who can try and solve? ∫(tan x)1/6 dx ...

If degree of ionization of water=1.8 x 10-9 at 298 K,then find its ionization constant ...

For reaction, A(g)↔B(g)+C(g) prove that Kp=α2(Kp+P) ...

*Image* i m unable to do this one............plz give complete solution........ thanx a ton! ...

*Image* Ques1) For the above pair of structures, identify the relation b/w them. Are thay enantiomers, diasterioisomers, structural isomers, or two molecules of the same compound? Ques2) *Image* How many optical active forms ...

when two resistors of resistance R1 and R2 are connected in parallel,the net resistance is 3ohm.When connected in series,it's value is 16ohm. calculate the values of R1 and R2. ...

Q. Find the sum : 1 + 5 + 19 + 49 + 101 + 181 + 295 ................. ...

What is total volume of solution(in ml) when 1M NaOH is required to be added in 100mL 1M CH3COOH(Ka=10-5) solution so that pH is 6. ...

For a certain process ,the molar heat capacity of an ideal gas is CV+ R/2. Then identify the process a)PV=constant b)P/V=constant c)V2/P=constant ...

For reaction 2HI↔H2+I2 Prove that the degree of dissociation α of HI is related to equilibrium constant Kp by the expression \frac{2\sqrt{K_p}}{1+2\sqrt{K_p}} ...

A nucleus is located at(0,0,0).If the probability of finding an s-orbital electron in a tiny volume assumed (a,0,0) is 1 x 10-5.Then find probability of finding an electron in the same sized volume around (0,a,0) ...

The increasing order of dipole moment is a)CH3I<CH3Br<CH3Cl<CH3F b)CH3F<CH3Cl<CH3Br<CH3I c)CH3I<CH3Br<CH3F<CH3Cl d)None ...

Evaluate the following limit: \lim_{x\to+\infty}\left(\sqrt[n]{(x+2)(x+4)\cdots(x+2n)}-\sqrt[2n]{(x+1)(x+2)\cdots(x+2n)}\right) where n is a positive integer. ...

Potential diffrence in EMF(electromotive force) or Terminal voltage is more?????????????????????? ...

A Ring of radius 'r' and has a charge of 'q' distributed uniformly over it's length . a small portion 'x' is cut of from the ring where x<<r . Find the Electric field due to the remaining portion at the center of the ri ...

A Ring of radius 'r' and has a charge of 'q' distributed uniformly over it's length . a small portion 'x' is cut of from the ring where x<<r . Find the Electric field due to the remaining portion at the center of the ri ...

A wire is stretched to increase it's length by 10%.Find the percentage change in it's resistance..............................plz solve this sum for me. ...