Question

calculate the specific weight, density and specific gravity of one litre of a liquid which weighs 7N​

Answer 1

Answer:

The ratio of a substance's density (mass per unit volume) to the density of a certain reference material is known as relative density or specific gravity.

Explanation:

For liquids, the reference is almost always water at its densest temperature (4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). In scientific circles, the term "relative density" is frequently used.

Specific weight = Density x G

Density = Mass/Volume

7N Force = Mass x G

Mass = 0.7 kg  (Taking G = 10 ms-2)

Density = 0.7/1

 = 0.7 kg/l

Specific weight = 0.7 x 10 = 7 N/m3