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.
CNA Certification In NC â North Carolina. You will need to attend a training class that has been approved and maintained by the Division of Health Service Regulation. â¦ These training courses must encompass at least 75 hours of training though some courses will include even more.