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.
The average CNA salary in the U.S. is $24,010 ($11.54/hr).The majority of CNAs within the U.S. can expect annual wages of between $20,600 ($9.90/hr) and $29,070 ($13.98/hr). However, the top 10% of all CNAs have an annual salary over $34,580 ($16.62/hr).he average CNA salary in the U.S. is $24,010 ($11.54/hr).