A string of a music instrument has a length of 0.64 m. Its mass is 8.6 g. Find the speed of a wave on this string in m/s if the tension on the string is 75.6 N? (Hint: You need to calculate the linear mass density – mass/length in m/kg).
v=T/ρl=75.6/(0.0086/0.64)=75 (m/s)v=\sqrt{T/\rho_l}=\sqrt{75.6/(0.0086/0.64)}=75\ (m/s)v=T/ρl=75.6/(0.0086/0.64)=75 (m/s) . Answer
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