Recently Active Physics Questions

*Image* This is a really easy question if you can grasp the concept within A small hamster is put into a circular wheel-cage which has a frictionless central pivot,A horizontal platform is fixed to the wheel below the pivot.I ...

This question has been taken from IE IRODOV. pls help me solve this A flywheel with initial angular velocity ω0 decelerates due to the forces whose moment relative to the axis is proportional to the square root of its angula ...

A metal disc of radius a=25 cm rotates with a constant angular velocity ω = 130 rad/s about its axis. Find the potential difference between the centre and the rim of the disc if a) The external magnetic field is abse ...

A copper wire with cross-sectional area S=2.5mm2 bent to make three sides of a square can turn about a horizontal axis OO' (fig. 3.69). The wire is located in uniform vertical magnetic field. Find the magnetic inducti ...

a curious phenomenon was observed by an experimenterworking with a very sensitive galvanometer while sitting ona chair at a table.[the galvanameter was secured on awalland the ends of its winding connected to an open key on t ...

a constant electric current flows along a uniform wire with cross sectional radius "R" & heat conductivity coefficient "x" .a unit volume of wire generates a thermal power of "w". FIND the temperature ...

two Ice skaters ram n lakhsman [hehe ...nice names] are holding two sides of a massless rod ......ram is twice as heavy as lakshman.....the centre of mass of the two skaters lie along the rod.... where will they meet:: 1.if r ...

what is delta star method of calculating equivalent resistance...? ...

a sphere is rolling up an inclinced plane..... and thn returns rolling... wot is the direction of friction in both the cases?????????? ...

an objct and a screen r mounted on an optical bench and a convergin lens is placed bewtn so dat a shrp image is recicvd on d screen . d linear mag of d image is 2.5 d lenx is nw moved 30 cm nearer the screen and d shrp imgae ...

generally they say that moment of inertia cannot be more than MR*2.but there is a case where it can be greater than MR*2.can anyone describe one such case? nishant bhai please dont answer this. ...

Asked by nirav Nirav Is it possible to find the displacement on the ground that a projectile will undergo after reaching back to ground with following parameters? angle = 89 degrees initial velocity = say 50 m/s t ...

DO xplain in detail. as in (i)on d surface of earth (ii)r<R (iii)r>R ...

a convex lens is placed betwn an object and d screen wich r a fix d distnce apart for one position of d elns the magnification of d image is m1 wich is obtaind on d screen , when d lens is moved by a idstnce d the magnificati ...

in the neighbourhood of a rational no. there lie two irrationals..and vice versa.. ...

if earth is taken 2 b a solid sphere and a tunnel is dug along d diameter of d earth and a body is thrown in d tunnel then how is d body going 2 show s.h.m? d thing is i know by time period formula dat can b proved. bt i ...

Find mu for the rod of mass m to be in equilibrium. Both blocks are fixed. *Image* ...

a 5D lens forms a virtual image wich is 4 tyms d object placed perpendicular on d principal axis of d lenx find d distnce of d objct frm d lens ...

a light rod of length 1m is pivoted at its centre and two masses r attached as shown...find initial ang acc assuming the rod was initially horizontal..... *Image* why there is no torque due to tension??? ...

A simple harmonic oscillator of force constant k oscillates with amplitude in a frictionless medium.Answer the following ques: 1) The position average kinetic enrgy per oscillation is_? 2) The time average potential energ ...

A uniform tube closed at one contains a mercury pallet 10 cm long. When the tube is raised vertically with the closed end upwards the length of the air column trapped is 20cm. Find the length of the air column trapped when th ...

in triangle abc,Δ2=a2b2c2/2(a2+b2+c2)then which type triangle is abc right angel, equilateral,isoscelesor scalene ...

A thin uniform rod of mass m has one end attached to a smooth hinge and is allowed to fall down from a horizontal position.Find the max. horizontal strain on the hinge during rotation of rod. ...

a block of mass m is placed on a rough inclined plane which makes an angle @ with the horizontal..if the incline plane is placed in an elevator moving up with a uniform vel v and the block does not move,find the work done by ...

*Image* The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards the right with constant speed v0 = 2m/s.The spring constant is 100 N/m. At t=0, the spring is uns ...

*Image* In the figure there is a four way key at the middle . if key is thrown from situation BD ton AD , then how much charge will flow through point O ???? ...

*Image* in autumn when trees have shed all their leaves,one can frequently see shadows from two parallel branches.the lower branch produces a sharp dark shadow and the upper brancha broder and lighter one.if two such shadows ...

a monochromatic flux from a remote source with a wavelength λ is almost normally incident on a thin glass wedge.a screen is placed at a distance `d` from the wedge.a lens with a focal length `f` projects the interference pat ...

For any work to be done there must be energy to sustain it. WHERE DOES THE EARTH GET ENERGY TO ROTATE???? Is it due to the gravitaional force??? ...

A hoop is placed on a absolutely smooth level surface.a beetle alights on the hoop.what trajectory will be described by the beetle and the centre of the loop if the beetle begins to move along the hoop?the radius of the h ...