Info:

procedures carried out in a lab:

1. A positively charged glass rod is brought close to a neutral metal rod. The metal rod is momentarily grounded, then the ground is removed.

2. A balance apparatus is used to measure the electrostatic force.

3. Styrofoam is rubbed on the person's hair.

4. An ebonite rod is charged with -6 and is touched to an uncharged pith ball.

1. Which of the following statements describes the charge on the glass rod and the metal rod after the procedure described above?

a) the glass rod is neutral and the metal rod is now positively charged

b) the metal rod is negatively charged and the glass rod is positively charged

c) both objects are negatively charged

d) both objects are positively charged

2) which of the following statements describes the charge on the hair and the styrofoam after the procedure described above?

a) the styrofoam is neutral and the hair is now positively charged

b) both objects are neg. charged

c) both objects are pos. charged

d) the hair is negativity charged and the styrofoam is positively charged

3) Which of the following statements describes the charge on the ebonite rod and the pith ball after the procedure described above?

a) the ebonite rod will have a charge of - 3C and the pith ball will have a charge of +3C

b) the charge on both the ebonite rod and the pith ball will be -3C

c) The ebonite rod will have a charge rod -9C and the pith ball will have a charge of -3C

d) the ebonite rod will be neutral and the pith ball will have a charge of -6C