Pleaseee helppp

amplitude and frequency of waves high and low

Amplitude and frequency

Explanation:

Amplitude is how high the wave is from the rest position(the line the waves go through). The higher the wave, the more amplitude it has (amplitude is height of wave). Frequency is how many waves there are, the more waves, the more frequency. You can tell if there is a lot of frequency when the line is repeated frequently, here's an example of frequency and amplitude:

the image shows frequency, amplitude is the height of the wave.

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