At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 10m/s from the top of a 300m building. How much earlier does the thrown rock strike the ground? (Disregard air resistance)

d

explanation:

i think the answer is d. but im not sure!

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

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