A piano tuner stretches a steel piano wire with a tension of 765 N . The steel wire has a length of 0.600 m and a mass of 4.50g
. What is the frequency (f_1) of the string's fundamental mode of vibration?
What is the number n of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to f = 16 kHz?
The amount of energy to reach the boiling point is . To pass the boiling point, are necessary (18.02 is the molar mass of water). This means that are left. This allows the steam to heat another . Therefore, it ends as steam at temperature