The sound intensity 50m away from the tsunami warning siren and the integrated coastal zone risk management is 0.10 W/m2 - What is the sound intensity at 1 km? What is the sound intensity level at the same distance? - The lowest intensity that is likely to be heard above the noise background is 1 µW/m2 Calculate the maximum distance at which the siren will be heard.

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Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.