Because of how it's worded the answer would most likely be number four
Answer:
Depends on what pole it is.
Explanation:
If the poles of the cars and magnets are the same they will repel, if different, attracts.
A leaf is organic matter because organic matter refers to anything from something living. because a leaf is living or was at one point it is organic matter
frequency is how many times a sec the thing vibrates
amp is the size of the vibration
wavelength is distance peak to peak for example