Recently Active Physics Questions

A chain of mass M and length l is suspended vertically with its lowest end touching a scale. The chain is released and falls onto the scale. What is the reading of the scale when a length of chain, x, has fallen? (Neglect the ...

A particle is projected at an angle of 60° with speed 10√3 from teh point A as shown in teh fig......at the same time the wedge is made to move with speed 10√3 towards rigth as shon in the fig.....then time after which p ...

Question. A uniform power pole of mass m and lenght L is hoisted into a vrtical position with its lower end supported by a fixed pivot at 0. The wires supporting the wires are accidently released, and the pole falls to the gr ...

A wooden block, with a coin placed on its top, floats in water as shown in figure. The distance l and h are shown there. After some time the coin falls into the water. Then (A) l decreases and h increases (B) l increases and ...

A massive vertical wall is approaching a man at a speed u. When it is at a distance of 10 m, the man throws a ball with speed 10 m/s at an angle of 37° which after completely elastic rebound reaches back directly into his ha ...

Can friction do positive work? If yes explain with an example? If friction can do positive work, then (from work-energy theorem) friction can increase the kinetic energy of an isolated system. Give your views on this statemen ...

please tell me xact defination of hydrostatic paradox? ...

*Image* A disc of mass M and radius R is lying on a smooth horizontal surface.A particle of mass M moving horizontally with a velocity V collides with the disc at B and sticks to it.Speed of point A on the disc just after imp ...

A wire of length l is bent into shape of an n sided regular polygon .If its mass be m , determine its polar M.I. about its centroid. Also find the M.I., in the limiting case as n-->∞ ...

Given a sample pf Radium-2008 having half life of 4 days. Find the probability, nucleus disintegrates after 2 half lives. A. 1 B. 1/2 C. 1.5 D. 3/4 ...

For the first time i have seen an image which explains the formula 360/theta so nicely.. have a look.. *Image* ...

i was browsing the net for a book by david morin and i found this site http://translate.googleusercontent.com/translate_c?hl=en&sl=zh-CN&u=http://phys.5d6d.com/thread-431-1-2.html&prev=/search%3Fq%3Dhttp://phys.5d6d.com/threa ...

a block tied between two identical springs is in equilibrium . if the upper spring is cut, then the acceleration of the block just after the cut is 6 m/s2 .now if instead of the upper string, the lower string is cut then the ...

A conducting loop of radious R is placed in a uniform ,tranverse magnetic field region of strength B. radious of the loop is increasing with time as r=r0. Induced emf in the loop varies with time as (center of the loop coinsi ...

1)two planets A and B describe circles of radii r1 and r2 round the sun as centre with speed varying as the square root of their radii... Find the angle between the radii of these two planets when their relative angular veloc ...

the masses m1,m2and M are 20,5,50 kg respectively .the coefficient of friction between m1 and M and that of m2amd ground is 0.3.the string and pulleys are maseless.the string is perfectly horizontal between p1 and m1 and also ...

A belt of mass 2 kg is wrapped over two cylindrical wheels of small radii rolling on a horizontal rough surface.Each wheel has a velocity 3 m/s as shown in the figure(assume that belt does not slip).What will be the kinetic o ...

In which of the following arrengement if we apply 10 volt across A and B the PD across C and D is found to be 7 volt, but when we apply 10 volt across C and D the PD across A and B is found to be 10 volt? *Image* ...

q1) *Image* 5 blocks are placed in the manner shown in the figure. Mass and legth of each such block is m and l. What should be the distance between each of the blocks to preserve equilibrium? (Distances should be equal) ...

In which of the following arrengement if we apply 10 volt across A and B the PD across C and D is found to be 7 volt, but when we apply 10 volt across C and D the PD across A and B is found to be 10 volt? *Image* ...

If the potential applied to the tube is doubled and the separation between the between the filament and the target is doubled,the cut-off wave length A. will remain unchanged B. will be doubled. C. will be halved D. will beco ...

Hi Tiitians , here is one googly frm my side ...but its a simple one though we kno that acceleration a = dv/dt = vdv/dx .....(1) now consider a particle with a positive velocity at t=0 and a negative acceleration . Assume thi ...

these days i am seeing a lot of sums being solved by a rather new concept negative mass can anyone expln to me its basic theory and its working and applications and if possible any buk over it ...

*Image* PS: i dont hav d ans ...so pls post full method ....its not a lengthy one :P ...

Q) A point charge Q is placed at a distance 'a' above a horizontal plate which is infinitely large. find the flux passing through the horizontal plate? ...

A point charge q is placed at a corner of a cube. Find the flux passing through the cube ? If you are through with the 1st part , try to find out the flux passing through the surface of the above cube which lies opposite to t ...

two balls with masses 1 kg and 2 kg are slipped on a thin smooth horizontal rod. the balls are interconnceted by a light spring of stiffness k=24.the left hand ball is imparted velocity v1=12cm/s. find the oscillation frequen ...

Q. Consider a long, straight wire of cross-sectional area A carrying a current i. Let there be n free electrons per unit volume. An observer places himself on a troley moving in a direction opposite to the current with a spee ...

*Image* A loop of radius a and resistance R uniformly distributed over it is placed perpendicular to a magnetic field B as shown. A rod AB of negligible resistance starts rotating with angular speed w. At t=0, theta = 0. A co ...

Q.) A point charge q = 1C is placed at a distance 10 metres from the center of a neutral conductor. What is the potential on the surface of the conductor ? Give proper explanations ! ...