1. Batteries power much of our modern mobile lifestyle. AA batteries are often rated in units of milliampere-hours (mAh). This unit is actually a measure of the charge that the battery contains, and may be converted directly to coulombs by the formula 1 mAh = = 3.6 C. How many coulombs of charge are contained in a AA battery rated at 1500 mAH? 2. Thirty-five coulombs of charge flow through a wire in 2 minutes. Determine the current in the wire.
3. If 2 mA of current flow in your mp3 player, how long will it take for 1C of charge to flow?

magnitude and direction

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

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