The correct answer for this problem is c
Answer:
refracción
Explanation:
I don't speak spanish but that's the answer
Number 4 I think
the atomic mass is 11 because the mass is the sum of protons and neutrons
Answer:

Explanation:
The amplitude of he combined wave is:

A, is the amplitude from the identical harmonic waves
B, is the amplitude of the resultant wave
θ, is the phase, between the waves
The amplitude of the combined wave must be 0.6A:
