Question

which of the following solids will have the highest wave speed? one that has a high level of stiffness combines with low density - one that has a low level of stiffness combined with a low-density - one that has high level of stiffness combined with a high density - one that has low level of stiffness combined with a high density.

Answer 1

Answer: The first option (ONE THAT HAS A HIGH LEVEL OF STIFFNESS   COMBINED WITH LOW DENSITY)

Explanation: Low density means volume is high compare to mass and stiffness is about hardness

Answer 2

Answer:

One that has a high level of stiffness combined with low density.

Explanation:

Velocity of wave in a solid = √ Y/σ ; Y is young's modulus of elasticity, or stiffness and σ is the density of the solid medium.