[填空题]
A bug on the surface ofs-l i9u(u6o nryn7a1dp3s gf x2e:m 6b a pond is observed to move up and down a total vertical distance of 6.0 cm, from the lowest to the highest point, as a wave passes. If the ripples decrease to 4.5 cm, by what factor dpb76a n x:gmsf3y2ed1 oes the bug’s maximum KE change?