Question

Насос мощностью 20 квт поднимает воду на высоту 20 м за 30 мин.Какова масса поднятой воды? срочно!!!!!!!!!!!!

Answer 1

A=N*t
A=m*g*h
N*t=m*g*h
m=N*t/g*h=20*10^3*30*60/10*20=180*10^3 кг

Answer 2

Calculation of the Mass of Water Lifted by a Pump

To calculate the mass of water lifted by a pump, we need to consider the power of the pump, the height to which the water is lifted, and the time it takes to lift the water.

Given: - Power of the pump: 20 kW - Height of water lifted: 20 m - Time taken to lift the water: 30 minutes

To calculate the mass of the water lifted, we can use the formula:

Mass = Power * Time / (Acceleration due to gravity * Height)

Let's plug in the values:

Mass = 20 kW * (30 minutes * 60 seconds/minute) / (9.8 m/s^2 * 20 m)

Before we proceed with the calculation, let's convert the power from kilowatts to watts and the time from minutes to seconds:

Mass = (20,000 W) * (1,800 s) / (9.8 m/s^2 * 20 m)

Now, let's calculate the mass:

Mass = 36,000,000 Ws / (196 m/s^2)

Simplifying further:

Mass = 183,673.47 kg

Therefore, the mass of water lifted by the pump is approximately 183,673.47 kg.

Please note that the above calculation assumes ideal conditions and does not take into account factors such as efficiency losses in the pump or variations in the acceleration due to gravity.