An air column in a glass tube is open at one end and closed at the other by a mo

Question

An air column in a glass tube is open at one end and closed at the other by a movable piston. The air in the tube is warmed above room temperature, and a 356 Hz tuning fork is held at the open end. Resonance is heard when the piston is at a distance d1 = 21.2 cm from the open end and again when it is at a distance d2 = 68.3 cm from the open end. (a) What speed of sound is implied by this data? Changed: Your submitted answer was incorrect. Your current answer has not been submitted. Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m/s (b) How far from the open end will the piston be when the next resonance is heard?

Explanation / Answer

3/4=0.683m

/4=0.212m

/2=0.471m

=0.942m

velocity=f*=0.942*356=335.352m/sec

b)next resonance @ 5/4=1.1775m

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