The pump lifts 8 tons of water to a height of 2.5 m in 5 seconds. Determine its power.

Initial data: m (mass of water lifted by the pump) = 8 t (8 * 10 ^ 3 kg); h (lifting height) = 2.5 m; t (duration of water rise) = 5 s.

Constants: g (acceleration due to gravity) ≈ 10 m / s2.

The power of this pump can be calculated by the formula: N = A / t = ΔEp / t = m * g * h / t.

Let’s make the calculation: N = 8 * 10 ^ 3 * 10 * 2.5 / 5 = 40 * 10 ^ 3 W (40 kW).

Answer: The pump has a power of 40 kW.