When fully immersed in a liquid, a buoyant force of 40 N acts on a body with a volume of 4 dm3. What kind of liquid is this?

To find the type of liquid presented, it is necessary to determine its density using the formula: Fa = ρl * g * V and ρl = Fa / (g * V).

Data: Fa – Archimedean force (Fa = 40 N); g – acceleration due to gravity (g ≈ 10 m / s2); V is the volume of the body immersed in the presented liquid (V = 4 dm3 = 4 * 10 ^ -3 m3).

Let’s make a calculation: ρzh = Fa / (g * V) = 40 / (10 * 4 * 10 ^ -3) = 1000 kg / m3.

Answer: Fresh water has a density of 1000 kg / m3.