Question

A power saw radiates sound uniformly in all directions and is measured at 103 dB 1.66 m from the saw. At what distance from the saw should you be so that the sound is at a safe level of 65.0 dB? Number Units (Anser must have 3 significant figures.)

Answer 1

#The Change in the decijbel Scale of the Souet 12 =- 82 - 8 = 10 dB log | Iz > 103 dB - 650B = 10 dB log (Iz 3 38 db = lodb log in u 3.8 ə gen - 2 Jz 1038 6309.57 II Power Radiated Remains Coustout , So, Pi= Pz Ipari = Iz nr 2 as lower, P= IA Isr² = Izle P= I (2) r² I, I A= Area le = ? (6309.54) r=radius. = (1.60)2(6309.57) = 17386.65 14386.65 131.05 y = 132 m. Camscanner 2 I= Intensity lar CS seyri