Explanation:
Longitudinal waves are waves in which the vibration of the medium is parallel to the direction the wave travels and displacement of the medium is in the same (or opposite) direction of the wave propagation. Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.
The answer is a)phytoplankton because the krill needs to eat the phytoplankton and the seal needs to eat the krill and so on
Ulama is similar Racquetball
An antinode must occur at B, the open end of the pipe
Explanation:
For the standing waves produced in a pipe, open and closed ends reflect waves in a different way, so their behaviour is different. In particular:
- A closed end acts as a node (because there is no vibration of the wave)
- An open end acts as an antinode (maximum vibration of the wave)
This means that for the pipe in this problem:
A (the closed end on the right) must act as a node of the standing wave
B (the open end on the left) must act as an antinode of the standing wave
Therefore the correct answer in this problem is that an antinode must occur
at B, the open end of the pipe
Learn more about waves:
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