The answer to that would be that
they require so its mandatory for mechanical waves to travel through a medium
Your answer is A
Pls mark me brainiest and I sure hope this helps you
Answer:
1.
Firstly removing off one strip and it leaves electrons behind, so the strip becomes positively charged.
2. The roll however is not negatively charged because it is "earthed " by the hand holding it, thus excess negatives repel each other away through the hand.
3.Tearing off the next strip and once more it leaves electrons behind, the new strip is also positively charged and will repel the first strip.
4. Then, tear two strips apart and one will leave electrons behind on the other. Meaning that one strip is positive and the other is negative and they will attract each other.
Answer:
Let me look up a couple of things regarding this question.
Explanation:
Then I will get back to you.
