Betelgeuse is not very bright in the sky, but has a really large absolute magnitude. Why do you think this is? Find at least 2 reasons!

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).