No conclusive evidence exists on “average” 1-mile run times, because there is no scientifically agreed-upon average runner. Opinion varies widely, but most anecdotal evidence places the average between seven and 10 minutes per mile for a non-competitive, in-shape runner.
The following scenarios that accurately describes a
condition in which resonance can occur is vibrating tuning fork is struck and
begins to vibrate as the object used to strike it is placed away from the
tuning fork. The answer is letter B.
