Question

A particle moves along the x-axis from x=0 to x=1 under the influence of the force F=(1+x2)−1.Find the work done by this force.

Answer 1

A granular layer can form standing-wave patterns, such as squares, stripes, and hexagons, when it is fluidized with a pulsed gas flow. These patterns resemble the well-known patterns formed in vertically vibrated granular layers, but are governed by different dimensionless numbers. Recent research [de Martín et al., Phys. Rev.