Air becomes a conductor if the electric field across it exceeds 3.0 × 106 V/m. What is the maximum charge that can be accumulated on an air-filled capacitor with a 0.2 mm plate separation and a plate area equal to the area of the world’s largest painting (6.7 × 103 m2)?

What is on your multiple choice anwers

Answermake them get very hot and over time wear them out;

A). redi wish i´ve

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.