A noise level of 100 decibels corresponds to noise coming from a machine shop. This level of sound is significantly loud and can potentially cause hearing damage with prolonged exposure.
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The ratio of an object’s velocity to the velocity of sound in the same medium under the same conditions is called the Mach number. This dimensionless value is critical in aerodynamics and fluid mechanics, indicating the object’s speed relative to ...
Sonar is mostly used by navigators. Sonar (Sound Navigation and Ranging) is a technology that uses sound waves to detect objects underwater. It is widely employed by navigators, including naval forces, commercial ships, and submarines, to navigate safely, avoid obstacles, ...
A person should stand approximately 28 feet from a reflecting plane to hear their echo distinctly. This distance allows for a sufficient time delay between the emission of sound and the return of its reflection, making the echo perceptible to ...
The walls, ceiling, and floor of a good auditorium are covered with fibrous materials like carpet and glass fiber to prevent echo by absorbing sound. These materials dampen sound waves, reducing reverberation and ensuring clearer acoustics for the audience. By ...