Recently Active Physics Questions

Point-masses of mass m are at rest at the corners of a regular n-gon, as illustrated in the figure for n = 6. *Image* How does the system move if only gravitation acts between the bodies? How much time elapses before the bodi ...

A small bob of mass m attached to an elastic cord revolves in a horizontal frictionless table with n revolutions per second.If the unstretched length of the cord be "L" and the tension in the cord increases in direct proporti ...

if the fraction of total energy associated with pure rolling is A for a ring and B for a solid sphere....find A & B ...

What should be the exact values of temperature and pressure at N.T.P. and S.T.P.? whether at S.T.P. temperature is 273K or 298K? ...

these are a few stunning questions.Try to solve these guys.Its really gives he brain a hard workout. 1) *Image* Consider the diagram above.The two small blocks are of equal masses 'm'.The coefficeient of friction between the ...

*Image* ...

A thin wire of radius r has an electric charge q. What will be the increment of the force stretching the wire if a point charge q0 is placed at the ring's centre ?? Pls explain the question 2.. ...

When a charged comb is brought near a small piece of paper,it attracts the piece . Does the paper become charged when the comb is brought near it ?? ...

Can two equipotential surfaces cut each other ?? Pls explain the question too..i didnt understand ...

q a rod oa rotates about a horizontal axis about o with a constant anticlockwise velocity w=3 radians per second. as it passes the position θ=0 a small block of mas m is placed on it at aradial distance of r=450mm if the blo ...

d scale of a galvanometer requires of resistance 50Ω contins 25 divisions .on passing a current of 1 division .d resistance dat must b added to it so dat it may become a voltmeter of range 2.5V[ans-200Ω] d resistance of gal ...

Point charges q & -q are located @ the vertices of a square with diagonals 2l as shown in the fig. Find the magnitude of the electric field strength @ a point located symmetrically with respect to the vertices of the sqr. at ...

In some old texts it is mentioned that 4Ï€(pi) lined of force originate from each unit positive charge. Comment on the statement in the view of the fact that 4Ï€ is not an integer. ...

The number of electrons in an insulator is of the same order as the number of electrons in a conductor. What is the basic difference betw. them ?? Should we explain it wid the Forbidden Gap theory or is their any other ans ? ...

a chord is used to lower vertically a block of mass M through a distance d at a constant downward accn g/3 d work done by d chord on d block is ? a ballon is going vertically upwards with a velocity of 10m/s 75m above d groun ...

*Image* ...

A cycloid is a curve so that time of descent under action of gravity is minimum for any two pts on the curve find its eq ( be original no copywork Q inspired from a model in a science park i visited ) ...

1. why is electric flux outside spherical conductor Q/2ε and not Q/ε 2. force exerted on Q1 (given is a spherical shell with charge q distributed uniformly on it and Q1 is at its centre) and a charge q2 some dist away =0 wh ...

two block a and b ,each having amass of 320g connected by a light string passing over a smooth light pulley , the horizontal surface on which the block a can slide is smooth . the block a is attached to a string of spring con ...

*Image* ...

*Image* Wat is capacitance of this? ...

*Image* ...

*Image* ...

*Image* plz give detailed solution!!!!!! ...

in an elastic string whose natural length is equal to that of a uniform rod be attached to the rod at both ends n suspende at middle point a)the rod ll sink until total wrk is non zero b)the rod ll sink until d total wrk done ...

in dU=dW+dQ if dQ=0 then dU=dW. LHS is dependent on the initial and final coordinates of the system but RHS is dependent on both state and path. How is this possible? plz help ...

wen the range of projectile on a n inclined plane is maximum then a)focus of the path is on the plane b)focus of the path is below the plane c)focus of path is above the plane d)focus of path can be at any place ...

a stone is dropped into a well 80m deep & impact of sound is heard after 4.25 s if g=10m/s2 d vel of sound in air is ...

*Image* LAB=LCD=LEF/2=LGH/2 RAB=REF=RCD=RGH/2 Pressure at A is 2p an at D is p .The volume flow rate thru the pipe AB is Q.Volume flow rates through EF and GH are a)Q/17 and Q/5 b)q/17 and 16/17 Q c)Q and Q ...

a stone is dropped into a well 80m deep & impact of sound is heard after 4.25 s if g=10m/s2 d vel of sound in air is ...