Respuesta :
I think the correct answer would be density and stiffness. For any wave, the speed will always be equal to the square root of a resistance over its density. The resistance can be tension, stiffness or other measures. Hope this answers the question.
Answer:
Density and Stiffness
Explanation:
The two main physical factors that influence the speed of a mechanical wave are _____.
density and magnetism
density and stiffness
stiffness and magnetism
density and thickness