Recently Active Physics Questions

Q1 Four persons K, L, M, N are initially at the four corners of a square of side d. Each person now moves with a uniform speed v in such a way that K always moves directly towards N and N directly towards K. The four persons ...

Why does the Earth follow an elliptical path around the sun? Is it affected by the presence of the other planets? Where as the moon's orbit is not so. Why? ...

the emf induced by the inductor is given by e= -L(di/dt) so when we apply the kirchhoff's law in the growth of RL circuit then the emf induced by the inductor should come to be +ve i.e. the eqaution should come "e - iR + L(di ...

*Image* two particles from A & B start traveling simultaneously towards each other ,both of them with speed u.find their separation after time t=R/u. 2.What will be their initial velocities when both particles have rotated th ...

If a tunnel was dug from one end of the Earth to the other end through the centre of the Earth and a ball would have been relesed in the tunnel at one end , What would have been the ball's motion?Why? ...

A motor drives a body along a straight line with a constant force. The power P developed by the motor must vary with time t according to ...

A boat floating in fresh water displaces 35.6 kN of water. What weight of water would this boat displace if it were floating in salt-water of density 1024 kg m-3? ...

i am sorry..i should've put this questn up in the chemstry section...but stil...plz answer this plz explain me what are ligands ...

in glass slab the faces are parallel or not ...

how photon has linear momentum as it has zero rest mass ????? ...

*Image* A semi-circular wire of radius R is rotating with constant ang. velocity ω. Find the p.d. Between points O and A. A constant magnetic field exists. ...

In the figure, there is a square of side 'l'. Ends C and D are pulled with velocity u. Find the induced emf at the instance when angle ABD is θ. Magnetic field is into the plane of paper. *Image* ...

a capacitor of capacitance C is given a charge Q. at T=0 it is connected to a ideal battery of emf E through a resistance R. find the charge on the capacitor after time t ...

Consider two identical spheres,one of which lies on a thermally insulating plate and the other hangs on an insulating thread.Equal amounts of heat is given to the 2 spheres. Which will have a higher temp. ?? ...

can you think why capacitors with water as dielectric medium is very rare for practical usage although water has the highest dielectric constant ? ...

Establish the current distribuition over 2 resisitances R1 & R2 connected in parallel corresponds to the minimum thermal power generated in the circuit ...

Ques1) Although the internal resistances of all sources of emf were neglected in the treatment of the potentiometer, it is really not necessary to make this assumption? Explain why internal resistances play no role in the mea ...

what is newtons law ...

can anyone explain how to calculate equivalent capactace using connection removal method that is removal of an unwanted junction ...

Why Do Only Dicarboxylic, beta keto and simple carboxylic acids decarboxylate? ...

Ques) A block is kept on a smooth inclined plane of angle of projection θ that moves with constant acceleration so that block does not slide relative to the inclined plane. If the inclined palne stops, then show that the nor ...

what is dark matter ??? ...

the figure shows a small square box held with a person's fingers pushing downwards one quarter of the way along the top of the box and the thumb pushing sidewards on the bottom of the side face of the box. friction between th ...

*Image* *Image* This is 1 way to resolve components....But what I do is use the triangle law....(1st dia).... There easy to see sinx= mg/Comp of mg along the incline Comp = mg/sinx Thus by 2 different methods, we get 2 differ ...

Why cant a capacitor work in DC ?? ...

A fully charged capacitor has a capacitance C.It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity s and mass m. If the temperature of the block is raised ...

prove that if the lines of force shaped like the arcs of concentric circles with their common centre at the point O in a certain section of a field,,then the electric field in that section should be proportional to the distan ...

*Image* initially the spring was highly compressed such that b1 almost touched b2.suddenly the compressing force was removed.find m such that b2 jumps from the ground.(assume spring constant to be k) ...

*Image* when the boxes are lifted though a distance x,find the normal force between them and their acceleration ...

a slender rod CD of length (l) and mass (m) is placed upright on a motionless horizontal surface . a second identical rod AB is moving along the surface with a velocity (vt) when its end B strikes squarely the end C of the ro ...