Question

A hollow tube is placed in water so that it is open at one end. A tuning fork of frequency 367-Hz is brought to one end and the length of the tube adjusted so that the sound resonates at its fundamental inside the tube.

If the length of the tube is 23 cm when the tuning fork resonates, what is the temperature in the physics laboratory? (We'll ignore the effects of the tube's diameter)

Hint: Find the speed of sound in m/s

Give your answer in CELSIUS to TWO significant figures

Question Length of Tube A hollow tube is placed in water so that it is ope length of the tube adiusted so that the sound re

Answer 1

2 Som! - Let the speed of wave sound is 're one part of rod will act open end and water part act as closed end (fundamental ) Iv=fa 지니 I MI" f = frequency = 367 42 2 = 1 al2 a = 40 = wavelength a = 4x0.23 0.92 meter 337.64 mis U- 367 × 0.g2 sound in air Velocity of T U = 331 = 337.64 273k T = 273 X 1.04 T= 284.06 Kelvin T = 12.06 celciug Ang Note - fundamental Ist harmonic alu x 1/2 Nl4