Le treuil est utilisé pour abaisser et soulever le seau d'eau dans un puits. Il s'agit d'une corde enroulée autour d'un moyeu actionné par une manivelle. Quelle machine simple se cache derrière l'invention du treuil ?

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon

Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.