Abox of tools weighing 20 lb is to be lifted (occasionally—maybe twice per day) from the floor to a cart that is 46 in. high. (no control is required at the destination.) the handle of the box is 10 in. high (i. e., the handle is located 10 in. from the floor). due to the width of the box, the worker must reach 24 in. in front of his or her ankles to grasp the handle, but does not need to twist.

(a) how would you rate the coupling type (good/fair/poor)? justify your answer.
(b) fill in a niosh lifting table and compute an rwl.
(c) what is the lifting index?
(d) how would the preceding analysis change if the lifting was done with one hand?

i will answer your question if you answer mine

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

a skateboard rolling across the street - apex