Answer:
it's A
Explanation:
wen aligning the vectors the head and the tail should meet
Answer:True
Explanation: The mechanical waves need a medium through which to transport energy because the perturbation travels inside of the medium so it needs molecules that connect elastically the displacement of the wave. For example the sound mainly uses the air molecules to transport the energy also the sound can be traveled in solid materials like metal rods.
Im guessing it's (a) since the numbers go in chronological order and you read the periodic table left to right
I am not entirely sure but i believe the answer is C scupture