Hydraulics 1

1) If a certain gasoline weighs 7 KN/m³, what are the values of its density, specific volume, and specific gravity relative to water at 15°C?

Density:

ρ = 7 / 9.81

ρ = 713.56 kg/m³

Specific Volume:

v = 1 / 713.56

v = 1.401 x 10^-3 m³/kg

Specific Gravity:

 s = 7000 / 9798    , specific weight of water at 15°C is 9.789 N/m³

 s = 0.714

2)   A certain gas weighs 16N/m³ at a certain temperature and pressure. What are the values of its density, specific volume, and specific gravity relative to air weighing 12 N/m³?

Specific Gravity:

s = w / w_air

s = 16 / 12

s = 1.33

Density:

ρ = 16 / 9.81

ρ = 1.631 kg / m³

         

Specific Volume:

v = 1 / 1.631

v = 0.613 m³ / kg

3) If 5.30 m3 of a certain oil weighs 43,860 N, calculate the specific weight, density and specific gravity of this oil.

Specific Weight:

w = weight / volume

w = 43860 / 5.30

w = 8275.47 N / m³

                       Density:

ρ = specific weight of oil / g

ρ = 8275.47 / 9.81

ρ = 843.58 kg / m³

Specific Gravity:

s = density of oil / density of water

s = 843.58 / 1000

s = 0.84

My reason on making this blog

I made this blog for me to post problems I'll solve and problems I'd like to be answered by someone out there. These engineering problems are mostly be related to civil engineering field as civil engineering is my undergrad course right now. This will serve as a review on my course, hone my problem solving skills and hopefully to help fellow students. For now I'll be learning the features of this website and afterward will be posting stuff.