Question

name and state the principle used to chek purity of milk lactometer and explain its two application please help me

Answer 1

a) Archimedes' principleArchimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.
b) Two applications are :
    1) Floatation of ships and submarines
    2) Design of Hydrometers to find the densities of liquids.