The formula for the frequency of a wave in a vacuum is almost identical to that of a wave not in a vacuum. Since there are no outside influences on the velocity of the wave, though, you would use the mathematical constant for the speed of light, which electromagnetic waves would travel at under these conditions.
David Faustino net worth: $5 Million. David Faustino Net Worth: David Faustino is an American actor who has a net worth of $5 million dollars. Born in Los Angeles, California, in 1974, David Faustino began acting as an infant, appearing on the Lily Tomlin Special when he was three months old. In 1980, he scored a part on Little House on the Prairie, and began acting more consistently throughout the decade.
Nicknames: david_cook, David Cook, David Roland Cook, Da. Height: 1.83 m. David Cook is a Texas-born singer-songwriter and musician with an estimated net worth of $5 million dollars. The winner of American Idol's seventh season, David Cook released his first album as a signed artist in 2009 called, David Cook.