Recently Active Physics Questions

*Image* A sphere of mass m is placed on a rough plank of mass 2m which in turn is placed on an rough inclined plane, inclined at an angle theta, with horizontal. Friction coefficient between plank and sphere is u2 and that be ...

can somebody explain me how are these redistributions in the capacitors done for eg *Image* is redistributed as *Image* similar redistribution is done when dielectrics are made in series. what is the concept behind this redis ...

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*Image* i am confused abt the trajectory of the block..... wht path will it follow..... the block attached with the spring is block A ...

A source S and a detector D are initially at a distance of x=1km. Both start moving towards one another with same acceleration a = 10m/s2. Frequency of source is f = 2000Hz. Find the frequency observed by the detector at time ...

Q1)A particle having charge 2=10^-4 C is placed directly below and at a separation of 10cm from a bob of simple pendulum at rest.The mass of the bob is 100g.What charge should the bob be given so that the string becomes loose ...

Can someone please provide me the syllabus for fiitjee talent reward exam 2010 for class Xth. Please! ...

A string 120cm in length sustains a standing wave with the points of the string at which the displacement amplitude is equal to 3.5mm being separated by 15 cm. Find the max. displacement amplitude. By drawing a figure, I got ...

1) The atomic mass of iodine is 127g/mol. A standing wave in iodine vapour at 400K has nodes that are 6.77 cm apart when the frequency is 1000Hz. At this temperature, is iodine vapour mono-atomic or diatomic? ...

1)Is the formula 'real depth/apparent depth =μ " valid if viewed from a position quite away from the normal? 2) Can there be a situation in which a light ray passes through a prism undeviated? I think it happens in grazing i ...

Can u tell me Colour depends on frequency or wavelength?? ...

Refer HC VERMA CAPACITORS 26) b) I need help in applying star - delta method to the upper 3 capacitors- namely 1,3,4 microF It is basically a Y and we need to transform to delta. I keep getting wrong answers. I got 3 capacita ...

I need help with HC VERMA PART 2 Q46. Initially, the capacitance is C/2 when S is closed, Why will the charge flow through the battery? Is it that the second capacitor gets short circuited? How do we find out whether two plat ...

Q1 A solid sphere has a very small cavity at its center (volume of cavity→0).This cavity contains a source of electric field which varies as E(x) = k/x5 + k'/x3 (where 'x' = radial distance from the center & k,k' are positi ...

A thread carrying a uniform charge lambda per unit length has the configuration shown. Assuming the curvature radius R to be considerably less than the length of the thread, find the magnitude of the electric field strength a ...

Block C has a mass of 50 kg and is confined between two walls by smooth rollers. If the block rests on top of the 40 kg spool, determine the minimum cable force P needed to move the spool. The cable is wrapped around the spoo ...

a train A runs from east to west and another train B of the same mass runs from west to east at the same speed along the equator. A presses the track with a force F1 and B presses the track with a force F2, then (a) F1>F2 ...

why does field of electric dipole have a cylindrical symmetry.also explain w.r.t eqn of field on equatorial axis kp/[(r2+a2]3/2. what does this statement then mean:because of the cylindrical symmetry for the two charge system ...

1)a simple pendulum consists of a small sphere of mass m , has length l, carries chargeQ. It is placed in a uniform electric field E directed vertically upwards.will it execute SHH?What is its time period of oscillation.Pls e ...

*Image* Explain the concept , little bit of hint shoud be sufficient. ...

A dog of mass m is standing on the edge of a stationary horizontal turntable of totational inertia I and radius R. The dog walks once around the circumference of the turntable. What fraction of a full circle does the dog's mo ...

1) A body of mass M is kept on a rough horizontal surface(friction coefficient=μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on a body is F where- ...

I WANT TO KNOW THAT IS IT TRUE THAT TIME VARIES FOR DIFFERENT PlACES around earth or any other place For e.g. satellites revolve around EARTH ....they are used for gps systems...each satellte has its own clock ...on his journ ...

Q-1 A point charge q is located a distance d from an infinite plane. Determine the electric flux through the plane due to the point charge. Q-2 A point charge q is located a very small distance from the center of a very large ...

When a mass of water at 100°C changes to steam at the same temperature, does the internal energy remain unchanged?? If not; why??? ...

This is a pretty easy one....but I need some help. Initially the system of masses is held motionless. All surfaces, and pulley are frictionless. At the instant after the system of objects is released, find the accelerations o ...

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The wavelength of a note emitted by a tuning fork of frequency 512 Hz in air at 17 C is 66.5cm. If the density of air at STP is 1.293g/L, what is the Cp/Cv for air? I am getting answer as 1.4 but the answer given is 1.48. Can ...

find the moment of inertia of a cylinder of mass M, radius R and length L about an axis passing through its centre and perpendicular to its symmetry axis. Do this by integrating an elemental disc along the length of the cylin ...

a positive charge q is placed in front of a conducting solid cube at a distance d from its centre. find the electric field at the centre of the cube due to the charges appearing on its surface. ...