A hòrizontal force F of magnitude 20.0N is applied to a 3.00kg psychology book as the book slides a distance d=0.500 m up a frictionless ramp at angle 30.0⁰ (a) during the displacement, what is the network done on the book by F the gravitational force on the book, and the normal force on the book (b) if the book gas zero kinetic energy at the start of the displacement what is it speed at the end of the displacement

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

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