Kinetic Energy - Recorded CP3.1 Describe
how different
factors affect
the gravitational
potential
energy stored in
an object.
Worked Example
X
CP3.1 Recall
and use the
equation for
gravitational
A football with a mass of 0.4kg is kicked at a
speed of 20m/s. How much kinetic energy is
stored in the moving ball?

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