Which of the following is true of the loudness of sound?

Which of the following is true of the loudness of sound?

  1. is greatest in vacuum
  2. is independent of frequency
  3. depends on the square of the amplitude of the vibrating body ✓
  4. is proportional to the distance of the observer from the source of the sound

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.