When a sound wave first enters the auricle, which part of the ear does it travel through on its way to the eardrum? -auditory nerve
-cochlea
-hammer
-ear canal

i don’t know what the answer is i wish i

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray