Recently Active Physics Questions

A disk and a rod are hinged together in the following two ways: 1)through a pin joint 2)through welding at the hinge point Given that in the first case the disk rotates with omega1 and rod rotates with omega2 .While in the se ...

WE KNOW THAT EARTH HAS -VE CHARGED PARTICLES SPREAD OVER ITS SURFACE AND IN THE IONOSPHERES AND OTHER LAYERS ABOVE THE EARTH'S SURFACE THERE ARE +VELY CHARGED PARTICLES DUE TO COSMIC RAYS THAT IONISE AIR . SO POTENTIAL DIFFER ...

A uniform cylindrical pulley of mass M and radius R can freely rotate about the horizontal axis O. The free end of a thread tightly wound on the pulley carries a dead weight A. At a certain angle α it counter balances a poin ...

1. A stream of water issuing out from a top "neck down" as it falls. As the falling water crosses two levels separated by a vertical distance 'h', the cross sectional area of water decreases from a0 to a. Find the rate of flo ...

25. A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At a certain instant of time, when the rod makes an angle ∂ with horizontal the velocity of COM of the ...

a uniform rod of length 2L and mass M is kept vertically (along the Y axis) on a frictionless surface. its end point is at origin.. suddenly its end point starts sliding on the plane along the positive X axis..find the locus ...

A sheet of uniform charge density σ n dimensions a x a . find the electric field n potential on an axis passing through the midpoint of the sheet and perpendicular to the sheet as a function of distance h from the midpoint ...

a particle of unit mass is projected with velocity u at an inclination α above the horizon in a medium whose resistance is k times the velocity. its direction will again make the angle α with the horizon after a time......? ...

A particle of mass m is placed on vertical fixed circular track and then it is given velocity v vertically downward at top most posn. on track . If block moves on track with constant speed then what is work done from top most ...

which force is used to pull the pressure in vacuum cleaner? ...

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A cone made of insulating material has total charge Q spread uniformly over its sloping surface. Calculate the work done in bringing a small test charge q from infinity to the apex of the cane. The cone has a slope length L. ...

A mixture of 90 mole % of H2and 10 mole % D2 at 298 K and a total pressure of 1 atm is allowed to effuse through a small orifice of area 0.3mm^2.Calculate composition of the initial gas that passes through. ...

An ice cube of side l=20cm is floating in a tank (base area=50cmx50cm) partially filled with water.Dendity of water is 1000kg/m^3 and that of ice is 900kg/.m^3 .Calculate the increase in gravitational potential energy when ic ...

A. *Image* Then: (One or more may be correct) 1.) T = 5 N 2.) T = 10 N 3.) T' = 5 N 4.) T' = 0 B. *Image* Weight of sphere = W and a force P is applied on its surface to attain equilibrium (Friction is present). Then 1. Pmin ...

a particle moves on the path y= sinx with constant speed u. what will be its acceleration at x= π/2 ...

a metal sphere of radius R is charged to potential V. a) find the electrostatic energy stored in electric field within a concentric sphere of radius 2R . b) show that the electrostatic energy stored outside the sphere of radi ...

A particle of mass m collides oblically with another particle of mass 2m initially at rest. Both the particles have same diameter at the instant of collision velocity of 1st particle is making an angle of pie/3 with the line ...

*Image* Determine the equivalent capacitance between a and b. Each of the capacitor has capacity C. ...

hey friends i 've a doubt in HCV Newton laws of motion in "Questions for short answers" section...... i m sorry but image uploading is not working on the system.... Q. no. 8; fig 5-Q1 th equestion is the figure which is depic ...

*Image* above is a concave mirror with water filled up to height h as shown... take refractive index of water to be u .... take radius of curvature of concave mirror to be R ..... where should a point object on the principal ...

An elevator which can carry a maximum load of 1800 kg(elevator + passengers) is moving up with a constant speed of 2m/s.The frictional force opposing the motion is 4000 N.Determine the minimum power delivered by the motor to ...

*Image* A uniform solid sphere of mass m and radius R is kept on a long plank which is moving with acc. a= kt2 , where k = 1 m/s4 and t is time in seconds . There is no slipping b/w sphere and plank . The minimum value of coe ...

When an automobile moving with a speed of 36km/hr reaches an upward inclined road of angle 300,its engine is switched off.If the coefficient of friction involved is 0.1,how far will the automobile move up the incline before c ...

lets take it to another level :P A horizontal rectangular plastic pipe of width w and height h, which closes upon itself, is filled with mercury of resistivity ρ. An over pressure P is produced by a turbine which drives this ...

Calculate the increase in internal energy of 1 kg of water at 100 degrees Celsius when it is converted into steam at the same temperature and at 1atm. The density of water and steam are 1000kg/m3 and 0.6kg/m3 resp. The latent ...

I was wondering on a simple thing : Why do we measure the angle of incidence or reflection (or say refraction even) w.r.t normal to the surface and why not w.r.t the horizontal surface? ...

When a block of iron floats in mercury at 0 degrees C, a fraction K1 of its volume is submerged while at the temperature of 60 degrees, a fraction K2 is seen to be submerged. If the coefficient of volume expansion of iron is ...

2 particles in air are in projectile motion having masses M1 and M2 and velocity v1 and v2 at t=t0; collide at t=t1 ; their velocity becomes v1' and v2' at t=2t1, then [(M1v1' - M2v2') - (M1v1 - M2v2)] is ???? ...

1)Why when a convex lens having radius of curvature R, focal length f and refractive index μ is bisected horizontally along the principal axis its focal length remains the same, whereas when it is bisected vertically focal l ...