Describe the work performed by a ski lift in terms of kinetic and gravitational potential energy

Explanation : When the lift falls, then the gravitational energy changed into the kinetic energy. Gravitational potential  is associated with the mass of the lift and its position. When lift starts from rest , the mechanical energy of the lift  change in the form of potential energy.

When the lift down than the potential energy lost and kinetic energy is gained. Lift loses height and gains speed.

The work is performed by the lift, when lift covers the distance against the gravitational force.

In order to understand how kinetic and potential energy works in an ski lift it is necessary to know its terms

Potential energy is the energy that a body located from its height above the ground has

Kinetic energy is the energy of a body that is in motion

for the ski lift:

Kinetic Energy: When the ski lift moves from floor to floor

Potential Energy: When the ski lift is standing on the floor and people enter.

Gravitational energy: the chairlift uses the force of gravity to lower and change from potential energy to kinetic energy, with its own weight

I hope its help you

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