The term used to describe the quantity of matter that a body possesses

glass has been rated on the mohs scale as 5.5

he made 11 calls in one day

no. dot product   =0 when vecs at right angles

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.