Yes, electricity can travel through a vacuum. Older cathode ray televisions send a beam of electrons at high speed through a vacuum. When they hit the screen they excite a "phosphor" which glows,...
Light or radioactive particles. They uses electro magnetic radiation as a medium for them to travel through, Waves like sound can not travel through vacuum because they need physical mediums like air.
Sound being a longitudinal mechanical wave needs a medium to propogate.
In a vacuum (like the outer space), there is no matter to act as the medium and thus sound waves can not propogate.No. Sound...