Refer to concept simulation 4.4 for background relating to this problem. the drawing shows a large cube (mass = 27.8 kg) being accelerated across a horizontal frictionless surface by a horizontal force p. a small cube (mass = 3.8 kg) is in contact with the front surface of the large cube and will slide downward unless p is sufficiently large. the coefficient of static friction between the cubes is 0.710. what is the smallest magnitude that p can have in order to keep the small cube from sliding downward?

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

amplitude

hope this

prndulum needs thread, weight clock to time swings