Question

LIUC al allu Tele... Sution 3 Not complete Marked out of 100 P ag Question Question: A frequency of 816 Hz is played through some headphones above a tube which is emerging from a bucket of water as shown in Figure 1. The length of the tube above the water is slowly increased. The first resonance is heard when 9.21 cm of the tube are above the water and the second resonance when 29.7 cm are above the water Headphones 9 Water Bucket Figure 1: Diagrammatic representation of a set of headphones playing music above a tube that is emerging from a bucket of water Part 1) What is the speed of sound? Part 2 What is the size of the and effects? Part 3) What is the next length for which you will hear a resonance? Check

Answer 1

f=816 Hz 1-9.21cm 12-99.70 2 first Renonone and Resorone 12-11 = 2 x=2 (12-11) 12(20.49) = 40.98 cm u 8 cm wavelength of Port 1 sound frequency of sound=816H2 wavelength of sound = 40.98 km = 40.98 xlom. As le=f Velocity of Sound = (816) (40.98 x 10 IN = 33,439.68x10² ml u=334.3948 mig run 334.4 miss Poot 3 Next length for which Resonance occure en Is=? for Noot Resonane 13-d2 = 2 13 - 12+ €29.7 +40.98 = 50-19 135 50.2 cm 2