Aperfect elastic string of length l which is fixed at both ends has a linear mass density u .the string is given initial deflection and initial velocity at verious points and released at t=0.the string excecute small transverse vibration. the initial deflection and the initial velocity at any point x are are denoted by h (x) and v (x).find the difference normal modes of vibration and the deflection of the string at any point x

a.

explanation:

it breaks and dirupture other materials and other sencews from the bottom

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia