We can calculate the wavelength of sound waves that we can hear using the formula wavelength = velocity / frequency. In air sound travels at about 340 meters per second (the precise value depends on temperature, humidity, and pressure).
The average salary for certified nursing assistant jobs in Raleigh, NC is $37,000. Average certified nursing assistant salaries can vary greatly due to company, location, industry, experience and benefits.
What is the Average CNA Salary in the United States? If you are considering trying to get certified as a nurse assistant one of the most important questions will be, how much does a CNA make a year? In the United States the CNA average salary is $24,890 a year.