An object weighing 302 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 268 N . Immersed in oil, the object appears to weigh 276 N . Find the density of the object. Answer in units of kg/m 3 .

The density of the object 8883

Explanation:

Given data

= 302 N

= 268 N

= 276 N

Buoyant force in water on the body is given by

-

302 - 268

34  N

Volume of the object

V = 3.465 ×

Mass of the object

m = 30.78 N

Now density of the body

8883

Therefore the density of the object 8883

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