A hammer exerts a force of 5500 N on a nail and drives it into a block of wood.

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point