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 ?

Why would the crystals in an intrusive igneous rock be larger than the crystals in a chemical sedimentary rock? a. intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals. b. chemical sedimentary rocks form from dissolved substances on the earth's surface with very high heat and cool very slowly, which produces smaller crystals. c. chemical sedimentary rocks and intrusive rocks have crystals of the same size. o d. chemical sedimentary rocks form deep in the earth, so they cool slower, which produces small crystals. € read question correct:

As water is cooled from 4 c to 0 c its density

What is the mostly tropical region in asia