If it hit the matter that it cannot pass through.....according to the velocity of wave..it might get reflected back....we can find sound waves reflecting back in closed rooms...because of the presence of the matter through which it cannot pass....and...it's because of this tht...echo is observed
Se supone que si es 5.31 x 7.6 los límites son 38.98 ahora si fuera en suma mueves los puntos dos veces a la izquierda la sumatoria seria la siguiente .00531 + .0076 la respuesta seria
Yes, 2 sounds of very different frequencies interfere.
From TRECA lesson glossary: Beats are produced when a series of alternating reinforcements and cancellations produced by the interference of the waves of different frequencies
