A near-sighted person has a far point of 75cm. That person gets corrective glasses, which rest 2cm from their eyes, in order to give them a normal far point that is infinitely far away. However, those corrective lenses don't just change the person's far point. While wearing their glasses, what is this person's new near point (assume that without glasses, their near point is the normal 25cm)

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

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; how far out of place which the object finished relative to the starting location;