In a laboratory, you determine that the density of a certain solid is 5.23×10−6kg/mm3. convert this density into kilograms per cubic meters.

The Density of a solid that is 5.23×10−6kg/mm3 is equivalent to 5230 kg/m^3  

That is; D = M/V

For example; In this case we are given density as 5.23 x 10^-6 kg/mm3

This density can be converted to kilograms per cubic meters as required;

1 x 10^9 mm^3 = 1 m^3

Therefore;

1 mm^3 = 1.0 x 10^-9 m^3  

Hence;  

5.23 x 10^-6 kg/mm^-3 = (5.23 x 10^-6 kg)/ 1 x10^-9 m^3  

                                    = 5230 kg/m^3  

Keywords: Density  

Level: High school  

Subject: Physics  

Chapter: Density  

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