A solid conducting sphere with radius R that carries positive charge Q is concentric with a very thin insulating shell of radius 2R that carries charge −2Q. The charge −2Q is distributed uniformly over the insulating shell. Part A Find the magnitude of the electric field in the region 0

Ithink the answer is c but then again i'm probably wrong

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.

Answerit is comparative because this experiment is comparing the results of the volume at minimal pressure and then increases it; ; ;