Amass tied to the end of a 1.0 m-long string is swinging back and forth. from its lowest point, the mass moves 4 cm to the right, swings back through its lowest point to stop 4 cm to the left of its lowest point, then swings back to where it started. one complete swing takes about 2 s. if the amplitude of motion is doubled, so the mass swings 8 cm to one side and then the other, the period of the motion will be

If the amplitude of motion is doubled, so the mass swings 8 cm to one side and then the other, the period of the motion will be 2 s.

Explanation:

As we know that time period of the motion of the simple pendulum is given as

here we know that

L = length of the pendulum

g = acceleration due to gravity

so as per above formula we know that time period of the pendulum is independent of the amplitude of the motion of the time period

So we will say that there is no change in the time period of the motion when we increase the amplitude of the motion of the given pendulum

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