Answer:
A wave is a vibration in mediun tbat carries energy from one place to another.
Explanation:
The force that the book exerts on the table is a normal force, not a weight force. (The book's weight doesn't act on the table, it acts on the book.) It's equal in magnitude to the weight of the book, again, because of the first law.
Answer:
Please find the complete solution in the attached file.
Explanation:
They use x-rays to diagnose broken bones
A good heat insulator absorbs all, or almost all, of the heat energy
from any heat that flows through it.
A good electrical insulator absorbs all, or almost all, of the energy
from any electric current that flows through it.