Recently Active Physics Questions

OKIE HERES A GUD 1 ......................... A PENDULUM HAS A MASSLESS THEAD (long) ATTACHED TO A HOLLOW METAL SPHERE FILLED WITH WATER......... A SMALL HOLE IS MADE I THE BOTTOM MOST PART OF THE HOLLOW SHPERE WHILE THE PENDU ...

A solid sphere of mass 2.5kg and radius 20cm, placed on a horizontal smooth ground is acted upon by an impulse of 50 π Ns at a point A as shown in fig. The number of rotations made by the sphere about its diameter before hit ...

*Image* SOLUTION : 39 (d) y = ω2r2/2g , measured from the axis of the parabola. CAN sum1 pl. help me decipher, 1) how did this expression cum ??? [7] 2) wats the parabola, wich is being talked abt?? ...

34 . A strip of wood of length l is placed on a smooth horizontal surface . An insect starts from one end of the strip , walks with a constant velocity and reaches the other end in time t1 . it then flies off vertically . The ...

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the space between the parallel plates of a cpacitor is filled with a dielectric.each molecule of the dielectric is assumed to have the form of a dumbbell with a length `l`l whose ends carry +q and -q. the number of molecules ...

*Image* *Image* This is not my doubt.. just 4 others to solve.... see how much time u take to solve this.. i took 2 mins for all three.. [3][4] and u can see in pics above that i had to derive... fringe width Dλ/d also in th ...

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*Image* a particle of mass 'm' moving with velocity 'u' makes an elastic one-dimensional collision with a stationary particle of mass 'm' . they are in contact for a very brief time T. their force of interaction increases fro ...

CONSIDER A PARTICLE MOVING IN SHM ACCORDING TO EQUATION x=2cos(50Ï€t+tan-10.75) x is in cdentimetre n t is in second motion starts at t=0 (A) WHEN DOES THE PARTICLE COMES AT REST FOR THE FIRST TIME? (B) WHEN DOES THE PARTICLE ...

STATEMENT 1: During the charging of a capacitor(with the help of a battery), the battery is only energising the circuit and not supplying any charge to the circuit. STATEMENT 2: When capacitor is charged with the help of a ba ...

A spotlight S rotates in a horizontal plane with a constant angular velocity of 0.1 rad/sec. The spot P of lights moves along a horizontal wall at a distance of 3m. The velocity of the spot P when A=45° is___________________ ...

Two glass plates having a little of water in between cannot be easily separated because a)atmospheric pressure b)surface tension ...

assertion: A hydrogen filled balloon stops rising after it has attained a certain height in the sky                                    reason: the atmospheric pressure decreases with height ...

Calculate the capacity, between A and B , of the infinite network... I am getting answer as 2 μ F...but answer is given as 4 μ F.. In the figure all the capacities are in μF.. *Image* My metod: C0=1 + (2*Co) ---------- (Co ...

a long horizontal metallic rod with length along the east-west direction is falling under gravity. The potential difference b#w it's 2 ends will a] increase with time b]0 c]constant d]decrease with time ...

*Image* this is how i remember it.........(may not be same) starts off pure rollin with given parameters(figure) and when spring is unstreched!!!! a)find freq. b)max diplacement c)max. value of vo for which it rolls 1 day up ...

the angular amplitudeof a simple pendulum is (theta)0 The maximum tension in the string will be    a)mg(1+(theta)o2)         b)mg(1-(theta)o2)          c)mg (1+(theta)o)             d)mg(1- ...

a particle of mass m rotates in a circle of radius a with uniform angular speed w It is viewed from a frame rotating about z-axis with a uniform angular speed wo The centrifugal force on the particle is ...

please solve ques no 20 , 30 and 41 ...

A bar of cross section A is subjected to equal and opposite tensile forces at its ends! consider a plane through the bar making an angle A with a plane at right angles to the bar. For what values of A is the shearing stress m ...

The mass and radius of a planet are twice that of the earth Then the period of oscillation of a seconds pendulum on that planet will be ans given is √2 sec But i think the ans should be 2 sec only Because it is the only tim ...

a trolley of mass 200 kg moves with a uniform speed of 36 kmhr on a frictionless track. a child of mass 20 kg runs on d trolley from one end to the other (10 m away) with a a speed of 4m/s relative to the trolley in a directi ...

sum1 solve H C Verma part 1 - newton's laws chapter... q . no.39 !!! class 11 be ban giya tha :'( abhi nahi banra.. :'( isse dukh ki baat aur kuchh ho sakti hai ?? :'( ...

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The equation of trajectory of a projectile is given by y = ax - bx2 Find total distance travelled till the body reaches the highest point. ...

We know that increasing distance between 2 bodies increases gravitational potential energy. We also know that the universe is expanding. Then from where is this extra energy comming from? ...

What is the energy spent in blowing a soap bubble of radius 7cm? What additional work will be done in furthur blowing it to double radius. Surface tension=30dyne/cm ...

An observer A and a charge Q are fixed in a stationary frame F. Another observer B is fixed in a frame f, which is moving wrt to F. then a) both A and B will observe electric fields. b) both A and B will observe magnetic fiel ...

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