A long solenoid consists of 1700 turns and has a length of 0.75 m. The current in the wire is 0.48 A. What is the magnitude of the magnetic field inside the solenoid

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.

Because its not moving at that time hope u understand