Calcule la frecuencia fundamental y la de los tres primeros sobre tonos de un tubo de 45 cm de longitud a.) si está abierto en ambos extremos; b.) si está cerrado en un extremo. Use v=344 m/s; c.) determine el número del armónico más alto que podrá oír una persona con oído normal (que puede oír a frecuencias de 20 a 20,000 Hz) para cada uno de los casos anteriores.

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!

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