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the mass of a pencil sitting on your desk about .25 meters from you is .006 kg. the mass of a typical teenager or young adult is 55 kg. what is the attractive force between them? (fg = g (m1 m2)/d2 where g = 6.67 x 10-11 n m2/kg2 )
show your work.
you!

Explanation:

According to the law of universal gravitation, which is a classical physical law that describes the gravitational interaction between different bodies with mass:  

Where:  

is the module of the force exerted between both bodies  

is the universal gravitation constant.  

and are the masses of the pencil and the teenager, respectively.

is the distance between both bodies

Solving for :

This is the force of gravitational attraction between the pencil and the teenager, which is very small in this case

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