g Michael and John are playing on a seesaw. Michael has a mass of 25 kg and is sitting to the left, 0.4 m from the center of the seesaw, which is also the center of rotation. John has a mass of 40 kg and is sitting to right of the seesaw. At which distance from the center of the Seesaw should John be sitting so the Seesaw will be in rotational equilibrium (No rotation)? use g=9.8m/s2.

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

answer: 31, 5556. 952 seconds