At the Bratsk HPP, the difference in water levels in front of the dam and behind it is 100 m.

At the Bratsk HPP, the difference in water levels in front of the dam and behind it is 100 m. What energy does each cubic meter of water retained by the dam have?

Initial data: Δh (difference in water levels up to and behind the Bratsk HPP dam) = 100 m; V (considered volume of water) = 1 m3.

Reference values: g (acceleration due to gravity) = 9.81 m / s2; ρ (water density) = 1000 kg / m3.

The potential energy possessed by 1 m3 of water in front of the dam is determined by the formula: Ep = m * g * Δh = ρ * V * g * Δh.

Calculation: En = 1000 * 1 * 9.81 * 100 = 981 * 10 ^ 3 = 981 kJ.

Answer: Each cubic meter of water in front of the dam has a potential energy of 981 kJ.