7) A) Will a cannonball hit the ground at approximately the same location if
it is fired in the same direction at an angle of 20 degrees and then at
an angle of 50 degrees?
B) What angle should one fire a cannon to achieve maximum range?

Ifound this on google “your outer ear collects sound waves and reflects them into a tiny tube called the ear canal. at the end of the ear canal is a thin, skin-like membrane stretched tightly over the opening, called the eardrum.” i hope this you for what your looking for