Recently Active Physics Questions

A 0.5 kg mass, moving along x-axis, attains a maximum speed of 1.5 m/s . If the potential energy at any point along its path is given by U(x) *Image* its mechanical energy then is 1.5 J 0.5 J 2.5 J 1.0 J ...

HW IS RESNIC FR PHY MECHANICS ARE QUE TOUGH ARE THEY CANT BE CRAKED BY CBSE CONCEPTS ARE SOME EXTA KNW LEDE IS REQIRED ????? ...

I suck at physics, but I had to confront these some day.. Q1. A balloon is ascending vertically with an acceleration of 0.2 m/s2. Two stones are dropped from it at an interval(I couldn't comprehend what this meant...does it m ...

refer bks for chem inorg practice . nc ert i knw its imp but syill frm where ill get the practice of questions ??? so plz reply hw is RC ??? ...

ARE DIMENSIONS IN CLUDED IN JEE???? ...

The water equivalent of a copper calorimeter is 4.5g. If specific heat of copper is .09 cal /g/°c, then:- (1) Mass of the calorimeter is .5 kg (2) Thermal capacity of the colorimeter is 4.5 cal /° C (3) The heat required to ...

(1) *Image* Find the equivqlent resistance between A and B. (2) *Image* Find current in each resisrot. ...

1.Sketch qualitatively the field lines between and outside two concentric conducting spherical cells with uniform +ve charge on inner shell and -ve on outer shell.Consider cases in which both charges are equal ,and one is gre ...

A cylinder of radius R made of a material of thermal conductivity k, is surrounded by a cylindrical shell of inner radius R and outer radius 2R. The shell has thermal conductivity k'. The 2 ends of the system are set at 2 dif ...

*Image* Questions are from HCV ...

For CONCAVE minuscus adhesive force>cohesive For CONVX minuscus adhesive< cohesive For plane (neither concave nor convx angle of contact =90°) : a) adhesive<cohesive b) adhesive>cohesive c) adhesive=cohesive ???? ...

?? when pt^2=constant is given..? ...

If the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame one can surely say that (A) linear momentum of the system does not change in time (B) kinetic energy of the syst ...

(1) 2 loudspeakers are emitting sound waves of wavelength \lambda with an initial phase difference of \frac{\Pi }{2} .At what minimum distance from O on line AB will one hear a maxima? *Image* (A)25\lambda (B)\frac{100\lambda ...

Q. In a cyclic process dU nd dW respectively a) both r 0 b) both non 0 c) dU 0 nd dW may or may nt be 0 d) dU 0 nd dW non 0. ...

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I never quite understood the concept of electrostatic shielding. In an effort to understand, posted three questions. Pls help in those. Post any thing valid u have in this concept *Image* there is a charge 'q' at P. O is cent ...

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Q.1 In the figure shown , the middle plate is given a charge q. Each plate has an area A and separation b/w adjacent plates is d each. *Image* a) with all the switches open , the energy of the system stored in the region b/w ...

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how can we prove that if we are travelling at 99.99% speed of light towards or away from light then also speed of light relative to us is 3*108 m/s. ...

Q. A container is filled with liq of density d upto a height h. now a pin hole having cross sectional area 'a' is made at the bottom of the container. The area of cross section of the container is A. take a/A = 2*10-4. The ac ...

You gotta hate em. Especially when you get problems like these. Q. The time period of a simple pendulum of length L is measured in an elevator descending with acc a = g/3. What is the value? ...

I just dont know how to use pascal's equal height-equal pressure law in cases where the point of considerations are at same height BUT the level of liquid above each of them is different from other .. for eg : PLEASE SOLVE TH ...

Q1: A dog is sitting in a boat which is floating in a pond.The dog drinks some water from the pond.Prove that the level of water remains unchanged . My doubt : I dont know how to prove this BCOZ I DONT KNOW HOW TO CONSIDER TH ...

Q1. A neutral solid sphere has an unsymmetrical cavity in which in charge q is placed. Find potential at P. *Image* Q2. *Image* ...

An insect crawls up a hemispherical surface very very slowly. The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemisphere to the insect makes an angle of \alpha with ...

will friction behave as a conservative force in quasi-static process? ...

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