Un haz de luz en el aire incide sobre la superficie de una placa de cuarzo fundido (n=1.46). Parte del haz entra al cuarzo, con un ángulo de refracción de 30° y otra parte se refleja ¿cuál es el ángulo de reflexión?. Solo escribe el numero, sin el símbolo de grado.

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

there are no components of a physical goal mentioned on the list of choices that you've provided.

the answer to this is proletariats.

hope this : )