A) nucleus because some aims reflected off the gold foil proving that there was something bigger inside the atom hence discovering the nucleus
What Is A Molecule? B) NaCi
Answer:
"where crests and troughs have their maxima at the same time"
Crests and troughs are 180 deg out of phase and when they have their maxima at the same time and place, their net contribution will be zero"
I'm not too sure what your asking but here are two answers that may help.
The ear drum amplifies the vibrations.
The cochlea changes vibrations into electric signals.
A.kinetic energy for it an example of wood.