A guitar string is plucked and vibrates with a tension of 180 N. The string has a linear density of 0.050 kg/m. What power value is required to sustain a 440-Hz musical tone if the amplitude of the string’s vibration is 1.2 cm? Hint use: $\(\bar{P}\)=2 \(\pi\)^{2} \(\mu\) v f^{2} A^{2}$