1. Derive the equation for the radius of gyration of a cylinder 2. Explain the importance of this concept in dealing with problems concerning rotating bodies
3. describe in detail how you would find find experimentally the moment of inertia of a bicycle wheel about the centre line of it's hub​

The low lands i believe

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.

Answerincreasing preload