Two vectors 8 unit each, originated from the same point, calculate the magnitude & direction if; a) They are the same direction
b) Opp direction
c) right angle to each other
d) they form 30 degree at their intersection

this is poiselle's equation from fluid mechanic in physics. mech eng

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.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

not too sure thinking all accelerations are pointed down