Question

1. Calculate the mass density, specific weight and specific gravity of one litre of liquid which
wights 9Newton​

Answer 1

Answer:

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Explanation:

Weight of liquid = 7 N

Volume of liquid = 1 L = 0.001 m³

Specific weight =

Density =

Specific gravity =

Option 1 is the correct answer.

B) The Stokes(St) is the cgs physical unit for kinematic viscosity, named after George Gabriel Stokes.

We have

1 St = 10⁻⁴ m²/s

Answer 2

Explanation:

1. given w=mg=9N,v=1 litre=0.001m^3
2. m=9/g=0.91kg
3. mass density=mass/volume=0.91/0.001=910kg/m^3
4. specific weight=weight/volume=9/0.001=9*10^3N/m^3
5. specific gravity=density of liquid/density of water=910/1000=0.91