Question

Определите среднюю силу давления, действующую на стенку аквариума длинной 25 см и высотой 20 см., если он полностью заполнен водой

Answer 1

Дано:
L=25см=0.25м
h=20см=0.2м
ро=1000кг/м^3
p=?Па
Формула:
p=(ро)gh(общ) ; h(общ)=L+h
Решение:
h(общ)=0.25м+0.2м=0.45м
p=1000кг/м^3 × 10 Н/кг (или м/с^2) × 0.45м = 4500 Па = 4.5 кПа
Ответ:p=4.5 кПа

Answer 2

Calculating the Average Pressure on the Aquarium Wall

To calculate the average pressure on the aquarium wall, we can use the formula:

Pressure (P) = Force (F) / Area (A)

Where: - Force (F) is the weight of the water pressing against the wall. - Area (A) is the area of the wall.

Calculating the Force

The force exerted by the water can be calculated using the formula:

Force (F) = Weight (W) = mass (m) x acceleration due to gravity (g)

The mass of the water can be calculated using the formula:

mass (m) = density (ρ) x volume (V)

Given that the aquarium is completely filled with water, the volume of water can be calculated as the product of the length, width, and height of the aquarium.

Calculating the Area

The area of the wall can be calculated using the formula:

Area (A) = length (l) x height (h)

Putting It All Together

Using the provided dimensions of the aquarium (length = 25 cm, height = 20 cm) and the density of water (1000 kg/m^3), we can calculate the average pressure on the aquarium wall.

Let's calculate the average pressure using the provided information.