A violin string has a length of 327mm and produces a note of frequency 440Hz. Calculate the frequency of the note produced when the same string is shortened or "stopped" to a length of 219mm and the tension remains constant.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.