Question

ullet recovered from a crime scene has a mass of 9.68 g. A suspect was arrested for possession of a recently fired .357 Magnum revolver. The masses of bullets are traditionally measured using the unit grain. Given that 1 grain = 0.0648g, is the bullet consistent with coming from a .357 Magnum revolver, which is available with bullets that range from 125 to 180 grains? Show all work. (8 points) 2. A b

Answer 1

Mass of bullet = 9.68g

1 grain = 0.0648g ,therefore

1g = 1/ 0.0648 grains

Hence mass of bullet in grains is 9.68*1/0.0648 = 149.3827 grains

Bullets available from revolver 125 to 180 grains

Hence 149.38 lies in the range given therefore bullet is consistent with the revolver.