Question

. Answer the following questions.
1. What do you mean by density? How is knowledge of density useful in finding out if a
substance will float or sink in water?
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Answer 1

Explanation:

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic metre.