Write down the formula to work out the density of an object using its mass and volume.

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.

i believe the answer is a hope it and is correct

i would say

snell's law

refractve index = sin incidence / sin refraction