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 waves travel in. air at a speed of approximately 344 meters/second, while. electromagnetic waves travel at the speed of light. (300,000,000 meters/second). While mechanical waves need. something to move in e.g., air or water, electromagnetic waves. can travel in a vacuum. Another important characteristic of.