social capital. Stock of community's goodwill and trust acquired by an organization over the years, through its understanding and addressing of the concerns and priorities of the citizens. See also social value.
All electromagnetic radiation travels at the same speed (in a vacuum). Electromagnetic radiation travels very quickly. There is nothing which can travel faster. The speed is 300,000,000 m/s in a vacuum (that is 300 million metres per second-not easy to imagine!). Electromagnetic radiation can be thought of as particles or waves (the word radiation is also used for radioactivity).
Sound travels at around 330 meters a second; electromagnetic waves, at around 300,000,000 meters per second, almost a million times faster. Nonetheless, as I said before, if somehow you could turn your eardrums into effectively an antenna, you could hear radio waves just fine.