Question

the two plastic pieces repel and
move away from each other.​

Answer 1

Answer:

Since both strips have extra electrons on them, they each have extra negative charge. Since the same charges repel one another, the strips move away from each other.

Answer 2

Answer:

Two plastic 35-mm film canisters or small paper cups

Enough modeling clay to fill the cans or cups halfway

Four plastic drinking straws with flexible ends

A roll of 3M Scotch® Magic™ Tape, 3/4-inch (2-cm) width (don’t substitute other brands of tape the first time you try this activity; once you know what to expect, you can experiment with other tapes)

A plastic comb (not shownSomeone with a full head of hair (alternatively, you can use a piece of wool cloth)