Question

6. A tuning fork, frequency 384 Hz, produces resonance with a closed tube 20.0 cm long. What is the speed of sound?

7. What is the frequency of a tuning fork that resonates with an open tube 25.0 cm long. Speed of sound that day is 343 m/s


Please show the work

Answer 1

6. Speed = 76.8 m/s

7. Frequency = 1372 Hz

Step-by-step explanation:

Given the following data;

6. Frequency = 384 Hz

Wavelength = 20 cm to meters = 20/100 = 0.2 m

To find the speed of sound;

Speed = wavelength * frequency

Speed = 0.2 * 384

Speed = 76.8 m/s

7. Wavelength = 25 cm to meters = 25/100 = 0.25 m

Speed = 343 m/s

To find the frequency of the turning fork;

Frequency = speed/wavelength

Frequency = 343/0.25

Frequency = 1372 Hz