An ideal spring of negligible mass is 13.00 cm long when nothing is attached to it. when you hang a 3.00-kg weight from it, you measure its length to be 14.50 cm . if you wanted to store 10.0 j of potential energy in this spring, what would be its total length? assume that it continues to obey hooke's law. express your answer numerically. if there is more than one answer, enter each answer, separated by a comma.

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

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.