Question 3 {8 marks) The string for the G note on a violin has a fundamental frequency of 196 Hz. It is 30.0 cm long and has a mass of 0.500 g. While this string is sounding, a nearby violinist effectively shortens the G string on her identical violin (by sliding her nger down the string) until a beat frequency of 2.00 Hz is heard between the two strings. a) Briey explain what is meant by a beat frequency of 2.00 Hz. b) What is the frequency of the note played by the second violinist? c) What is the effective length of the G string on the second violin? a) Explanation: 2 b) Frequency of 2nd violin: c) Effective length of 2"'1 violin