During laboratory examination a liquid having a volume of 7M^2/L weights 46KN at 40°c, use density 1000kg/m^3. Calculate the specific weight, specific mass, specific weight?

To calculate the specific weight, specific mass, and specific volume, we can use the following formulas:

Specific weight (γ) = weight (W) / volume (V)
Specific mass (ρ) = mass (m) / volume (V)
Specific volume (v) = 1 / specific mass (ρ)

Given:
Volume (V) = 7 m^2/L = 7 L = 0.007 m^3
Weight (W) = 46 kN = 46,000 N
Density (ρ) = 1000 kg/m^3

1. Specific weight:
γ = W / V
γ = 46,000 N / 0.007 m^3
γ = 6,571,428.57 N/m^3

2. Specific mass:
ρ = m / V
ρ = ρ * V
ρ = 1000 kg/m^3 * 0.007 m^3
ρ = 7 kg

3. Specific volume:
v = 1 / ρ
v = 1 / 7
v = 0.1429 m^3/kg

Therefore, the specific weight is 6,571,428.57 N/m^3, the specific mass is 7 kg, and the specific volume is 0.1429 m^3/kg.