Anylon guitar string is fixed between two lab posts 2.00 m apart. the string has a linear mass density of μ=7.20 g/m and is placed under a tension of 160.00 n. the string is placed next to a tube, open at both ends, of length l. the string is plucked and the tube resonates at the n=1 mode. the speed of sound is 343 m/s. what is the length of the tube?

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?