A person lifts a 4.0 kg cement block a vertical distance of 1.4 m and then carries the block horizontally a distance of 8.2 m. The acceleration of gravity is 9.81 m/s 2 . a) Determine the work done by the person in the process. Answer in units of J.

their crystal patterns have been disrupted by stress

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.