Question

Помогите пожалуйста. Какое давление создает поршень нагнетательного насоса , подающий воду на высоту 15 м? Атмосферное давление нормальное.

Answer 1

дано h=15 м   P- ?
P=Pж=p*g*h=1000*10*15=150 к Па

Answer 2

Calculating Pressure Created by a Water Pump

To calculate the pressure created by a water pump, we can use the formula for pressure:

Pressure (P) = Density (ρ) × Gravity (g) × Height (h)

Where: - Density (ρ) is the density of the fluid (in this case, water). - Gravity (g) is the acceleration due to gravity (approximately 9.81 m/s²). - Height (h) is the height to which the water is pumped.

Given that the atmospheric pressure is normal, we can assume it to be 1 atmosphere, which is equivalent to 101,325 Pascals.

Calculating Pressure at 15m Height

Using the formula, we can calculate the pressure created by the water pump at a height of 15 meters.

Density of water (ρ) is approximately 1000 kg/m³. Gravity (g) is approximately 9.81 m/s². Height (h) is 15 meters.

Plugging these values into the formula: Pressure (P) = 1000 kg/m³ × 9.81 m/s² × 15 m

Calculating the pressure: Pressure (P) = 1000 × 9.81 × 15 = 147,150 Pascals

So, the pressure created by the piston of the water pump at a height of 15 meters is approximately 147,150 Pascals.