"No esquema a barra homogênea BC tem 100 N de peso e o corpo P tem 500 N. Determine a intensidade da tração no fio AB e as componentes horizontal e vertical da força que a articulação exerce sobre a barra. Dados: sen30º = 1/2; cos30º = /2

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.