Recently Active Physics Questions

a circular hole of radius r/2 is cut from a solid sphere of radius r. if the mass of the remaining plate is M ten what is the moment of inertia about an axis through the centre of original sphere, parallel to the hole? ...

A projectile is projected at an angle 60 degrees with the horizontal with velocity 10m/sec from the bottom of the inclined plane.Find the angle of inclination of plane(alpa) such that direction of motion for the particle is a ...

shudn't it be 20 %? *Image* thankx ...

*Image* ' find the compressional force on the ring of radius r carrying current i ,in a magnetic field as shown. Ans given is mew0*r*i ...

Q. Determine horizontal velocity with which a stone must be projected horizontally from a point P, so that it may hit the inclined plane perpendicularly. The inclination of the plane is θ and point P is at height 'h' above t ...

In the following figure, the space b/w the glass lenses is filled with water. We have to find the focal length of the system (radii of curvature, refractive indices given) *Image* Now to calculate the focal length of the wate ...

Bullets are being fired vertically up from a gun with an initial speed of 20m/s at an interval of 1 second. Find the number of bullets the 7th bullet will meet in its path. [Ans. is 4 bullet while going upwards and 4 bullets ...

draw graph between V AND R ...

Ques. A motor car is going due north at the speed of 50 km\hr. It makes a 90° left turn without changing its speed. The change in velocity is about A. 50km\hr towards west B.70 km\hr towards south west C.70km\hr towards nort ...

QUES. A long u shaped wire of width l placed in a perpendicular magnetic field B. A wire of length l is slide on the u shaped wire with a constant velocity u towards right. The resistance of all the wires is r per unit length ...

Q: A satellite orbiting the earth at a height ' r ' from the surface with velocity ' v ', starts losing energy at a constant rate of " C ". Find the time taken by the satellite to reach the surface of earth. Take Me as Mass o ...

the diagram shows a metre with the wire 'AB' having uniform resistance per unit length.when the switch 'S' is open, AJ is the balance length and when the switch is closed, AJ' is the balance length. is AB = 4 m and AJ = 2m th ...

a cubical box of side L is kept on a cylinder of radius R. what is the largetest value of L for the box to be stable? ...

One end of a carpet is nailed to an inclined wedge. Carpet starts to open by rolling purely on the inclined plane. As the time passes potential energy decreases and increase in kinetic energy results. Where does this energy g ...

1. A bulb is placed at a depth of 2 7 m in water and a floating opaque disc is placed over the bulb so that the bulb is not visible from the surface. What is the minimum diameter of the disc? 2. A fish rising vertically to th ...

a stone is thrown horizontally with velocity of 10 m/s. the radius of curvature at the end of 3 seconds is ??? ...

A particle is moving along x - axis whose acceleration is given by a = 3 x - 4 , where x is the location of the particle. At t = 0, the particle is at rest at x = 4/3. Find the distance travelled by the particle in 5 s. ...

A dumb bell consists of a light rod of length ' r ' and two small masses ' m ' attached to it. The dumb bell stands vertically in the corner formed by two frictionless surfaces. After the bottom end is moved slight towards ri ...

*Image* calculate the equivalent resistance across A B of this infinitely long ladder ...

can some one help me in drawing equivalent circuit (with some explaination pls) in these type of questions.. *Image* ...

a vernier calliper is used to measure the length of a cylinder.10 divisions of vernier scale coincides with 9 divisions of the main scale. the best suited length (measured) is?? ...

Matrix Match Type: Q. *Image* ...

1. A current loop of any arbitrary shape lies in a uniform magnetic field B. Show that the net magnetic force acting on the loop is zero. 2. Prove that the force acting on a current carrying wire, joining two fixed points a a ...

Q. Two particles, one with constant velocity 50m/s and other with uniform acceleration 10m/s2, start moving simultaneously from the same place in the same direction. They will be at a distance of 125m from each other after ho ...

1. A wire of resistance ' R ' and length ' L ' is connected to a d.c. source of emf V through a switch ' S ' . *Image* At t = 0, the switch ' S ' is closed and at the same time an external agent starts stretching the wire suc ...

*Image* Each plate has plate area S. Find the capacitance between A and B. Can anyone convert this to a series parallel combination ? I did by charge distribution and wrote Q=CV for all of them.(that takes at least 10 mins) C ...

A small drop of water of surface tension ∂ is squeezed between two clean glass plates so that a thin layer of thickness d and area a is formed between them. If the angle of contact is zero , the force required to pull the p ...

A long cylindrical conductor of radius 'a' has 2 cylindrical cavities of diameter 'a' through its entire length as shown in the cross section in the fig . a current 'I' is directed out of the page and is uniform throughout th ...

can pl smeone tell me a gud way to find consraint relations cz in mst prblms i can figure it out by common sense but there must be a proper "theoretical" way ...

Three blocks A,B,C of equal mass m are placed one over the other on a smooth horizontal ground as shown in fig. coefficient of friction between any two blocks of A,B,C is 1/2. Find the max. value of mass of d so that the bloc ...