Relative density, The weighted rod floats with 6 cm of its length under wat...

The weighted rod floats with 6 cm of its length under water [density 1000 kg/m3]. What length is under the surface when the rod floats in brine [density 1200 kg/m3].

What are the characteristics of dead stars, What are the characteristics of...

What are the characteristics of dead stars? Dead stars are generally cold balls of material in empty space. A teaspoonful of white dwarf matter would weigh as more as an Ele

Describe the classification of x-rays, In X-ray tube, when high speed elect...

In X-ray tube, when high speed electrons strike the target, they move into the target. They lose their kinetic energy and come to rest inside the solid. The electron because of fin

Force constant of a spring, Does the force constant of a spring changes if ...

Does the force constant of a spring changes if it is cut into parts? Ans) Force constant does not change because it is a constant

Determine the current flowing in the conductor, A 25cm long conductor moves...

A 25cm long conductor moves at a uniform speed of 8m/s by a uniform magnetic field of flux density 1.2T.  Verify the current flowing in the conductor when (a) Its ends are o

How can we prove, .how can we prove that sn=u+a(1/2)

.how can we prove that sn=u+a(1/2)

Electrostatic, electric field

electric field

Potential difference, Potential difference: When charges move from one ...

Potential difference: When charges move from one point to another, it is not the actual values of potential at those points which are Important, but the potential different (pd

Forces and nature,

How a virtual image can be formed, A virtual image can be formed by one or ...

A virtual image can be formed by one or more of the following single mirrors? Identify them. a) Plane mirror b) Concave spherical mirror c) Convex spherical mirror