A hydraulic lift is used to jack a 970 kg car 12cm off the floor . The diameter of the output piston is 18cm and the input force is 250N. (a) what is the area of the input piston? (b) what is the work done in lifting the car 12cm? (c) If the input piston moves 13cm in each stroke how high does the car move up for each stroke? (d) How many strokes are required to jack the car up 12cm? (e) show that energy is conserved

it should be -8.6 cm hope this out

continuous conducting path for current, power supply

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