Bonjour vous pouvais m'aidait pour cet exo cet engrenage est compose de trois roues A 24 dents B 15 dents et C 36 dents

a) indiquer au dessus des roues le sens de rotation de chacune des roues B et C

b) au bout de combien de tours ( pour chacune des roues ) cet engrenage seras t il de nouveau et pour la premiere fois dans la meme position ?

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.