Recently Active Physics Questions

*Image* Please explain the approach clearly....... ...

A glass tube of radius r is dipped vertically into a container of mercury with its lower end at a depth h below the mercury surface. If # is the surface tension of mercury , what must be the gauge pressure of air in the tube ...

Has anyone received d aieee scorecard as yet??.... ...

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A string 120cm in length sustains a standing wave with the points of the string at which the displacement amplitude is equal to 3.5 mm being seperated by 15cm. find, a)the maximum displacement amplitude b)to which overtone do ...

one of the star of a binary(double) stars system is rotating in a circular orbit of radius r1 with time period T. If the mass of this star is m1 find the mass m2 of the other star. Also find the distance between the two stars ...

a rope is pulled by each side in a game of tug of war by applying a force of 200 N.....what is the tension on the rope? *Image* ...

Does Newton's law of motion is applicable for explosion? yes...when..there is no matter of force..instead of there is kinetic energy..but nwton's law does not deal with K.E. stuck. ...

A solid cylinder of mass M=1kg and radius R=0.5m is pivoted at its centre and has three particles of mass m=0.1 kg mounted at its perimeter as shown in figure.The system is originally at rest.Find the angular speed of the cyl ...

A ball of mass M moving with velocity V0 on a frictionless surface strikes the first of two identical balls, each of mass m = 2 kg, connected by a massless spring with spring constant k = 1 kg/s2 (see Figure). Consider the co ...

A motorboat going downstream overcame a raft at a point A,t=60min later it turned back and passed the raft at a distance L=6.0km from the point A .Find the flow velocity assuming the duty of the engine to be constant. ...

a river is flowing from w to e at a speed m units.a man on the south bank of river ,capable of swimming at n units in still water,wants to swim across the river in shortest time.derive the expression to find out the direction ...

1)A lift is going upwards with an acceleration of 4.9 m/s2.Whatv will b the apparent wt. of a 60kg man in the lift?What when the lift rises up with a uniform velocity of 4.9m/s2?If the rope of the lift is broken,then? 2)A mac ...

While measuring the focal length of combination of two lenses, the image formed by lens 1 behaves as virtual object for lens 2.The final image shud have formed behind lens1 but it is formed in front of lens 2.Pls Explain??? ...

water drops fall at regular intervals from a roof.at an instant when a drop is about to leave the roof, the seperations between 3 succesive drops below the roof are in the ratio: a)1:2:3 b)1:4:9 c)1:3:5 d)1:5:13 ...

A boat moves relative to water with a velocity which is n(=2) times less than the river flow velocity. At what angle to the stream direction must the boat move to minimize drifting?? ...

For convex mirrors if incident rays are parallel to principal axis we extend the reflected rays backwards just to get the image.It is illogical as light never travels backwards.Can u pls explain? ...

*Image* Find the time period of small oscillations of the system composed of two homogenous circular cylinders, each of mass M and the connecting link AB. Assume no slipping on ground. ...

A thin spherical shell of total mass M and radius R is held fixed. There is a small hole in the shell. A mass m is released from rest at a distance R from the hole along a straight line that passes through the hole and also t ...

An artificial satellite (of mass m) of the earth (radius R and mass M) moves in an orbit whose radius in n times the radius of the earth. Assuming resistance to the motion to be proportional to e square velocity, that is, F=a ...

THE 50 KG HOMOGENOUS SMOOTH SPHERE RESTS ON THE 30 DEGREE IBCLINE A AND AGAINST SMOOTH VERTICAL WALL B.CALCULATE THE NORMAL FORCES AT A AND B. ...

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Can any one explain The mpemba effect illucidately.. that is... The hot water freezing before the cold....I can't make out.. ...

An accelerometer is made of a piece of wire with a bead on it that can slide on the wire with no friction. The wire is formed as a parabola y = kx2. The bead rests at the lowest point of the parabola when it is at rest. When ...

What is the use of first slit, the one before two slits acting as coherent sources in Young's Double Slit Experiment?? ...

prove with mathematical Rigour that angle of minimum deviation occurs when i1=i2 for a prism of apex angle A ...

They're out now! http://www.bitsadmission.com/fd/cutoffscores.htm Comp science fell to 343 last year...hmm. "Academic Flexibilities: Dual Degree Scheme: To meet the ambitions of the students who could not get admission to B.E ...

The amplitude of a wave disturbance propogation in the +ve X direction is given by y=1/(1+x^2) at t=0 and by y=1/[1+(x-1)^2] at t=2 sec. The velocity of wave is ...

1.A point charge is placed at the origin.Calculate electric flux through the open hemispherical surface:...... {x-a}2+y2+z2=a2;x≥a Ans.q/2ε0*{1-1/ 2 ) 2.A point charge is located on the axis of a disc of radius R at a dist ...

THE TIME TAKEN BY A BODY TO SLIDE DOWN A ROUGH 45 DEGREE INCLINED PLANE IS TWICE THAT REQUIRED TO SLIDE DOWN A SMOOTH 45 DEGREE INCLINED PLANE.THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE OBJECT AND ROUGH PLANE IS GIVEN BY ...