Relative densoty hydrometer puridy of milk

A lactometer is a specialized hydrometer used measure the relative density and purity of milk. A lactometer has graduations from 1 3 (top-bottom) between the uppermost marking of W representing the density of water and the lowermost marking of M representing the density of pure milk.

Explanation:

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Explanation:

A lactometer is a specialized hydrometer used measure the relative density and purity of milk. ... If the milk is pure the readings will be close to 1 and if the amount of water in the milk increases then the markings will be close to 3.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.