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.
A Certified Nurse Assistant (CNA) in Charlotte, North Carolina earns an average wage of $10.33 per hour. Most people with this job move on to other positions after 20 years in this field.