3 Positive or Negative?
It is known that if you rub a clear plastic object such as a pen through your hair (or with fur, wool, or
even cotton), the plastic ends up having a negative charge and so repels other negatively charged objects.
d. Consider the possibilities: Your U tape is positively charged, negatively charged, or neutrally charged.
For each of these possibilities, predict how the U tape would interact with a negatively charged plastic
pen.
