Khái niệm về môi trường nhiệt nóng và môi trường nhiệt lạnh? Ảnh hưởng của môi trường nhiệt nóng và môi trường nhiệt lạnh đến con người như thế nào ?

My answer is opptionc, just check with anyone else

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.

The law of conservation of momentum will be the same no matter where you apply it.the equation will be  77.4 + m (mass of canister) *3.6