Recently Active Physics Questions

We solve many circuits where many DC sources (eg cells) are connected in series/parallel. Have you ever wondered where you could do the same with AC Sources as well? Check out! It's really interesting. ...

The vibation frequency of atoms in solid at normal temperature are of the order 1013/sec. Imagine the atoms to be connected by springs... Suppose that a single silver atom vibrates with this frequecy and that all other atoms ...

Guys i can't understand/agree this statement.... pls help me...... Relative to an observer at rest in a medium the speed of a mechanical wave in that medium(v) depends only on elastic and other properties (such as mass densit ...

*Image* *Image* *Image* *Image* my answers are not matching . plz help me out. ...

a gas is contained in a metallic container fited with a piston. the piston is suddenly moved in to compress the gas and is maintained at this positon. as time passes the pressure of the gas in the cylinder : 1) increases 2) d ...

Q: Why is easier to break a piece of paper that you wet dry? ...

4 metal rods formed a square ABCD. The coeff. Of linear thermal expansion of AB & CD is α and for BC & DA is β.Prove that after increase in temp upto t˚ C, change between the angle of diagonals is { 1/2 (α-β)t}. ...

*Image* Ans : A,C plz help me out with this problem. ...

Mechanics: *Image* The coefficients of friction are μs = 0.40 and μk = 0.30 between all surfaces of contact. Determine the force P for which motion of the 30-kg block is impending if cable AB (a) is attached as shown, (b) i ...

A mass 'm' is undergoing S.H.M. in the vertical direction about the mean position 'x' with amplitude 'A' and angular freq. \omega . At a distance y from the mean position, the mass detaches from the spring. Assuming that the ...

A straight conductor of uniform cross-section carries a current I. Let 'S' be the specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocities only, in ...

A block of mass 'M' executes S.H.M. with amplitude 'A'. When it passes through the mean position, a lump of putty of mass 'm' is dropped on it.Find the new amplitude. ...

A SPHERE OF RADIUS 'R' IS FLOATING IN A LIQUID OF DENSITY '\rho ' WITH HALF OF ITS VOLUME SUBMERGED. IF THE SPHERE IS SLIGHTLY PUSHED AND RELEASED, IT STARTS PERFORMING S.H.M. FIND THE FREQUENCY OF THESE OSCILLATIONS. ...

A satellite is revolving around the Earth in a circular orbit with radius of 2R, where R is radius of earth.If suddenly,its velocity becomes zero in the orbit due to collision with some inter-stellar object(like a satellite), ...

*Image* i am getting c) but ans. given is d) ...

A conducting metal balloon of Radius ' R ', essentially of negligible mass is charged with charge ' Q '. It has to carry a payload of mass ' M '. Find how the charge ' Q ' and the Intrinsic Energy ' W ' of the balloon depends ...

*Image* Ans. 1 i seem to have completely forgotten this . some help plz. ...

1)a long straight wire carries a current i.let B1 b the magnetic field at a pointt P at a distance "d" frm the wire ..consider a sec of length "l" of this wire such that point P lies on perpendicular bisector of the section . ...

1)a long straight wire carries a current i.let B1 b the magnetic field at a pointt P at a distance "d" frm the wire ..consider a sec of length "l" of this wire such that point P lies on perpendicular bisector of the section . ...

A square loop of side length ' a ' , mass ' m ' and Resistance ' R ' enters a uniform magnetic field (B=B0 (-k)) with velocity ' v° ' at t = 0 sec Plot the variation of ' v ' with the distance from O ( Assume that ' v ' is e ...

*Image* *Image* *Image* *Image* *Image* *Image* *Image* need solutions with proper reasoning. ...

NCERT question number 36. chapter - laws of motion. ...

is hc verma enough for iitjee. what is a good book for physical chem. for iitjee. ...

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evaluate 0.2log 5 (1/4+1/8+........................∞) 5 is in the base ...

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In Lens Makers Formula Should we substitute the value of u (object distance) & v (Image distance) with proper Sign or just the value Lens Makers Formula : 1/v - 1/u = ( \mu_{2} / \mu_{1} )( 1/R1 - 1/R2 ) ...

*Image* Consider a mass ' m ' rotating about the given axis with angular velocity ' ω '. Find the acceleration and Pseudo Force of the block as seen from the MID POINT of the string. Assume the length of string as ' L '. ...

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