Question

на першому поверсі багатоповерхівки тиск води становить 3МПа. Чому дорівнює тиск на 5 поверсі, якщо висота поверху становить 3м?​

Answer 1

Відповідь:

р5=р1-ρgh

p5=200000Па-1000кг/м³*10Н/кг*(5-1)*3=80000Па

Пояснення:

Answer 2

Calculation of Water Pressure on the 5th Floor

To calculate the water pressure on the 5th floor of a multi-story building, we need to consider the height difference between the first floor and the 5th floor.

Given that the water pressure on the first floor is 3 MPa and the height of each floor is 3 meters, we can use the formula:

Pressure = Density x Gravity x Height

where: - Density is the density of water (approximately 1000 kg/m^3) - Gravity is the acceleration due to gravity (approximately 9.8 m/s^2) - Height is the height difference between the two floors (3 meters for each floor)

Let's calculate the water pressure on the 5th floor:

Pressure on the 5th floor = Pressure on the 1st floor + (Height difference x Density x Gravity)

Pressure on the 5th floor = 3 MPa + (4 x 3 meters x 1000 kg/m^3 x 9.8 m/s^2)

Calculating the above expression, we get:

Pressure on the 5th floor = 3 MPa + (4 x 3 x 1000 x 9.8) Pa

Pressure on the 5th floor = 3 MPa + 117,600 Pa

Converting the pressure to megapascals (MPa), we have:

Pressure on the 5th floor = 3.1176 MPa

Therefore, the water pressure on the 5th floor is approximately 3.1176 MPa.

Please note that the above calculation assumes ideal conditions and does not take into account any losses or variations in the water supply system.