Final answer:
Under normal conditions, the horn should be able to be heard for at least 500 feet.
Step-by-step explanation:
Under normal conditions, the horn should be able to be heard for at least 500 feet.
The distance over which a sound can be heard depends on several factors, including the intensity of the sound and any surrounding obstacles that may absorb or reflect the sound waves. The intensity of sound is measured in decibels (dB) and is logarithmic, meaning that a sound that is 10 dB louder is actually 10 times more intense.
In the case of a horn, if it is barely audible to someone, it may be around 60-70 dB. However, it is important to note that individual hearing capabilities can vary, so the exact distance may differ for different individuals.