Assignment:
As a rule of thumb, the perceived noise from a source falls by 6 dBA with every doubling of the distance from the source.
If a 1 MW wind turbine produces 103 dBA of noise within one metre of its base, estimate the distance from the turbine at which the noise can be reckoned to have fallen below the background noise level of 40 dBA.
Provide complete and step by step solution for the question and show calculations and use formulas.
