Wave a has an amplitude of 2, and wave b has an amplitude of 2. what will happen when the crest of wave a meets the trough of wave b?

Answer : The resultant amplitude is zero.

Explanation :

It is given that, Wave A has an amplitude of 2, and wave B has an amplitude of 2.

There can be two condition after interaction of the waves :

The resultant of two waves can be given by :

Here is 180

or

So, when the crest of wave A meets the trough of wave B the resultant amplitude becomes zero i.e. the amplitudes of two waves are cancelling each other.

Hence, this is the required solution.

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