I have a single plank of wood that is 6 meters long, and a rock I can use as a fulcrum. I make a lever with a mechanical advantage of 2. I place an 80N bottle on the output end of this lever. With how much force will I have to push on the input end in order to lift this bottle?
Draw and label a diagram that shows this lever. Label the input and output arms, as well as the fulcrum. Draw the 80N bottle on the output arm.

the answer is mosques. they are an important part of islamic culture.

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