Monica is hurrying off to her physics class, jogging down the sidewalk at a speed of 3.00 m/sm/s . Her friend Manny suddenly realizes that she left in such a hurry that she forgot her lunch of bagels, so he runs to the window of their apartment, which is a height 36.5 mm above the street level and directly above the sidewalk, to throw them to her. Manny throws them horizontally at a time 4.00 ss after Monica has passed below the window, and she catches them on the run. You can ignore air resistance. Required:
a. With what initial speed must Manny throw the bagels so Monica can catch them just before they hit the ground?
b. Where is Henrietta when she catches the bagels?

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