Your brother tells you he wants to increase his arm strength. He further states that he is going to accomplish this by doing 30 pull-ups and 30 push-ups in the morning and afternoon for the next 30 days. You ask your brother what he scored on muscular strength in his last fitness test and he states that he did not meet the health standard. What is a better strategy for meeting this goal?

magnityde and direction

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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