What are pressure node and pressure antinodes?
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In a longitudinal standing wave, such as in an organ pipe, there are fixed locations in the pipe where molecules oscillate back and forth at maximum amplitude, but there is no variation in pressure- the density remains constant; this is a pressure node.
At 1/4 wavelength away from this node there is a pressure antinode, where the density alternates from high to low, with corresponding alternations in pressure. At the center of this antinode there is no particle motion, but particles on either side alternately move toward and away from the center. A video at this site makes this much clearer.
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At 1/4 wavelength away from this node there is a pressure antinode, where the density alternates from high to low, with corresponding alternations in pressure. At the center of this antinode there is no particle motion, but particles on either side alternately move toward and away from the center. A video at this site makes this much clearer.
Hope it helps...Plzz mark as brainlist
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Answer:
Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure is the pressure relative to the ambient pressure. Various units are used to express pressure. Wikipedia
In SI base units: 1 N/m2, 1 kg/(m·s2), or 1 J/m3
Derivations from other quantities: p = F / A
Common symbols: p, P
Dimension: M L−1 T−2
SI unit: Pascal
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