Open - pipe Resonator

How many nodes and antinodes does a first harmonic have in the closed pipe resonator?

• a. antinodes 4 ,nodes 3

• b. antinodes 3 ,nodes 4

• b. antinodes 2 ,nodes 1

• b. antinodes 1 ,nodes 1

in the open end pipe, the length of the tube determines the _____ of the sound vibration.

• frequency

• amplitude

• volume

• pressure

which of the following is the best description for the relationship between the frequency and the length of the closed- pipe ?

• f =nv /4L

• f =nv /4L

• f= 2L/nv

• f = 4L/nv

Which of the following pipes, when hit, would make the highest pitch ? why?

• a. 1 foot long pipe

• b. 2 foot long pipe

• c. 3 foot long pipe

• d. 4 foot long pipe

An air column in a pipe, which is closed at one end, will be in resonance with a vibrating tuning fork with the fundamental frequency 264 Hz, calculate the length of the column is, (Speed of sound = 330 m/s.)

• a. 31.25 cm

• b. 93.75 cm

• c. 200 cm

• d. 150 cm