Will a homemade telephone made of two cans and a string work better with a tightly-woven string or a loosely-woven string? a) a tightly woven string because it will not come apart as easily b) a loosely woven string because the sound waves have more room to move c) a tightly woven string because sound waves travel best through dense materials d) a loosely woven string because sound waves travel best through less dense materials

The answer is C) a tightly woven string because sound waves travel best through dense materials. On USA Test Prep!

Explanation:

I just did the assignment ;)

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

i think the answer is a, hope this is right, that would be my best guess.