Question

Помогите! Даю 100 ПКТ срочно! 5.Для накачивания воды в бак, находящийся на высоте 12 м, поставлен насос. Какой мощности двигатель должен быть у насоса,чтобы он смог подавать в бак 1,8м3 воды в минуту.

Answer 1

Объем воды за секунду:
V=1,8/60 = 0 ,03 м^3/c
Плотность воды равна 1000 кг/v^3
Масса воды:  m=1000*0,03 = 30 кг
Работа равна потенциальной энергии:
A = m*g*h = 30*10*12=3600 Дж

Мощность: N=A/t = 3600Дж/1 с=3600 Ватт  или 3,6 килоВатт (3,6 кВт)

Answer 2

Обьем 1,8м^3=1800дм^3=1800л т.к. это вода,то 1л=1кг значит F=mg =18000Н, А=F*L (L-расстояние),A=216000, N=A/t=216000/60=3600Вт , надеюсь понятно, что t это 1 мин =60с

Answer 3

Calculating the Power of the Pump Motor

To calculate the power of the motor required for the pump to deliver 1.8m³ of water per minute into a tank located at a height of 12m, we can use the formula:

Power (P) = (Flow Rate × Density × Gravity × Height) / Efficiency

Where: - Flow Rate = 1.8m³/min - Density of water = 1000 kg/m³ - Gravity = 9.81 m/s² - Height = 12m - Efficiency is typically around 70-80% for pumps.

Applying the Formula

Using the given values and assuming an efficiency of 75%, we can calculate the power required for the pump motor:

Power (P) = (1.8 × 1000 × 9.81 × 12) / 0.75

Calculation

Let's calculate the power required for the pump motor:

Power (P) = (1.8 × 1000 × 9.81 × 12) / 0.75 Power (P) ≈ 282240 W

So, the motor of the pump should be approximately 282240 Watts to deliver 1.8m³ of water per minute into a tank located at a height of 12m.

Conclusion

To pump 1.8m³ of water per minute into a tank at a height of 12m, the motor of the pump should have a power of approximately 282240 Watts.

I hope this helps! If you have any further questions, feel free to ask.