A String with a Mass Per Length of 2

A string with a mass per length of 2.00 g/m is stretched with a force of 150 N between two points that are 0.500 m apart. The fundamental frequency of the stretched string is in tune with the fundamental frequency of an organ pipe filled with air at 20°C and open at both ends. The speed of sound in air at 0°C is 331 m/s. What is the length of the organ pipe?

A) 70.5 cm
B) 62.6 cm
C) 59.3 cm
D) 53.8 cm
E) 50.2 cm

Correct Answer:

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