Answer: A wave
Explanation:
Because it’s the one that’s cause the new medium to go between the two media.
Answer:Typical physical properties of metals : high melting points. good conductors of electricity. good conductors of heat.
Explanation:
Answer:
Compound B and D
Explanation:
Both are good conductors of electricity.
Answer:
electrons move around the nucleus in fixed orbits of equal amounts of energy
Explanation:
Quantum Theory
