Question

Water has a density of 1.0 g/cm3. Glycerin, a liquid used in some soaps, has a density of 1.26 g/cm3. If an object sinks in water but floats at a constant depth in glycerin, its density is _____.

1.) exactly 1.26 g/cm3

2.) greater than 1.26 cm3

3.) between 1.0 g/cm3 and 1.26 cm3

4.) less than 1.0 g/cm3

Answer 1

The object's density must be greater than water's density (1.0 g/cm3) because it sinks in water and less than glycerin's density (1.26 g/cm3) because it floats in glycerin, indicating it's between 1.0 g/cm3 and 1.26 g/cm3.

Step-by-step explanation:

When determining whether an object will float or sink in a fluid, it's important to compare the density of the object with the density of the fluid. According to the question, the object sinks in water which has a density of 1.0 g/cm3 but floats in glycerin which has a density of 1.26 g/cm3. Therefore, the object's density must be more than that of water but less than that of glycerin. This means the object's density is between 1.0 g/cm3 and 1.26 g/cm3.

Answer 2

3. An object will float if its density is less than the matter it is submerged in.

If it sinks in water, its density is more than 1. If it floats in glycerin, its density is less than 1.26.