Final answer:
The statement that waves propagate faster in a less dense medium if the stiffness is the same is true, because lower density results in less inertia and thereby higher propagation speed for waves.
Step-by-step explanation:
The statement 'Waves propagate faster in a less dense medium if the stiffness is the same' is true. This principle is often discussed in the context of wave propagation, where density and stiffness (or bulk modulus) of the medium are key factors that affect wave speed.
In general, for a given stiffness, reducing the density of a medium allows waves to travel through it more quickly. This is because the inertia that resists motion is less in a less dense medium, allowing the wave to propagate faster.
Imposition of silence to GDFJ by the station in distress. The statement is true or false?