Recently Active Physics Questions

Ques1) A particle is moving with a const speed in a circular path. Show thatn the ratio of avg velocity to it's instantaneous velocity when the particle describes an angle theta = pie/2 is 2 2 / pie. ...

1. plane moves due east at 60 km/h over a city X at a certain time. 12 mins lateranother plane takes off from the station Y which is 40 km due north of the city and flies 37° south of east . if both maintain their direction ...

a uniform circular disc of radius R is placed on a frictionless horizontal plane .another identical disc rotating with angular velocity \omega _{0} is gently placed on the top of the first disc .calculate the time in which bo ...

the distance from the surface of earth at which the gravitational potential energy of a ball of mass m is half at of that at the centre of earth is radius-R ...

SINGLE ANSWER CORRECT *Image* ...

Find the accleration of block of mass M' with repect to the wedge of mass M,assuming all surfaces to be frictionless. *Image* ...

Ques1) *Image* The figure shows a meter brdge circuit, with AB = 100 cm, X =12 cm and R =18 ohms, and the jockey is in the posn of balance.If R is now 8 ohm, through what distance will J have to be moved to obtain balance. (a ...

*Image* a ring rolls without slipping on a horizontal surface .at any instant ,its position is as shown in figure a) section ABC has greater kinetic energy than section ADC b) section BC has greater kinetic energy than sectio ...

Two blocks A and B of mass Ma and Mb are connected together by a spring and are resting on a horizontal frictionless table.Thr block are then pulled apart so as to stretch the spring and then released.Show that the kinetic en ...

A boy of mass 60 kg is standing over a platform of mass 40 kg placed over a smooth horizontal surface.He throws a stone of mass 1kg with velocity v=10m/s at an angle of 45° wrt ground .Find the displacement of the platform(w ...

A plank of mass 2 kg and length 1m is placed on a horizontal floor. A small blockk of mass 1 kg is placed on the top of the plank, at it's right extreme end. The coeff of friction b/w the plank and the floor is 0.5 and that b ...

The wire of the potentiometer has resistance 4 ohm and length 1m. It is connected to a cell of emf 2V and internal resistance 1 ohm. If the cell of emf 1.2 V is balanced by it, show that the balancing length will be 75 cm. ...

Three particles of mass 20g,30g and 40g are moving along the positive direction of the coordinaate axes respectively with the same velocity of 20cm/s,when due to their mutual interaction,the first particle comes to rest,the s ...

A particle of mass 2m is projected at an angle of 45 wrt horizontal wid a velocity of 20 2 m /s .After 1 s explosion takes place and the particle is pbroken into two equal pieces .As a result of this one part comes to rest.Fi ...

Q-1 : A bodu weighs 8 gm when placed in one pan and 18 when placed on a other pan of a false balance . If the beam is horizontal when both the pans are empty , the true weight of the body is Q-2 : when one swims across a rive ...

what is the concept of instanteneous axis of rotation? how to use this concept in problems? ...

System shown in figure is in equilibrium. Find the magnitude of net change in the string tension between the 2 masses just after, when one of the springs is cut. Mass of both the blocks is same and equal to m and spring const ...

If the length of the filament of the heater is reduced by 10 %, the power of the heater will (a)inc by abt 9 % (b) inc by abt 11 % (c) inc abt 19 % (d) dec abt by 10 % ...

1) A tap supplies water at 22°C . A man takes 1 litre per minute at 37°C from the geyser. Show that the power of the geyser is 1050W. 2) A servo stabilizer restricts voltage output to 220V±1 %. If an electric bulb 100W / 2 ...

one end of a light spring of natural length d & spring constant k(=mg/d) is fixed on a rigid support& the other end is fixed to a smooth ring of mass m which can slide without friction on a vertical rod fixed at a distance d ...

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IN THE QUESTION GIVEN BELOWWWWWWWWWWW are we supposed to neglect earth's mass??????? *Image* ...

The switch is closed at t=0. calculate p.d. across inductor 'ab' as a function of time. *Image* ...

*Image* Find the velocity of all the four spheres when the centre of the upper sphere is n x d distance from the ground ???? ...

RIDDLE: WHY DOES THE TOWER OF PISA LEAN? ...

with the help of neil bohr equation can we determine the velocity of electron at nth shelll ...

we see that always the weight in truck is kpet near the cabin on the loader y? ...

if a box of walled at 4 sides with heavy weight whre will be its centre of gravity? where will be the centre of gravity of an irregular object? its a stupid question does there is centre of gravity in space? why the magnetic ...

and for near the fuel tank of the plane? does the centre of gravity is there in ? we see that planes take off at an angle does it relates with its mass? ...

what can be the wavelenght of lasers that are used in operations? ...