ACTIVITY 5
1.
A closed pipe has a fundamental
frequency of 400 Hz. Calculate
a) The frequency of the first overtone
b) The fundamental frequency of an open pipe of the same length.
2.
A speaker emitting a note of frequency
250 Hz is placed over the upper end of a vertical tube filled with water. When
the water is gradually run down the tube, the air column resonates initially
when the water level is 3.1 cm below the top of the tube. The air column
resonates again when the water level is 9.98 cm below the top of the tube.
Determine.
a) The speed of sound in air
b) The end correction.
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