Which describes a conscious experience? noticing that the front door has two locks on it hearing a favorite song on the radio and remembering a school dance smelling a pizza and dreaming about an italian restaurant

As newton's first law states a object in motion stays in motion

Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x 

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.