Question

Срочно умоляю помагите❗❗❗❗Времени очень мало Физика 7 класс.С какой силой вода действует на дно сосуда длиной 20 см , шириной 10 см ,высотой 10 см ?плотность воды 1000кг/м в кубе.​

Answer 1

Ответ:

1кПа

Объяснение:

Дано:

а=20м

в=10м

h=10см=0,1м

ρ=1000кг/м³

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P-?

Согласно уравнения Бернулли:

Р=ρgh=1000*10*0,1=1000Па=1кПа

Answer 2

Calculation of the Force Exerted by Water on the Bottom of the Vessel

To calculate the force exerted by water on the bottom of the vessel, we need to use the formula:

Force = Pressure x Area

The pressure exerted by a fluid is given by the formula:

Pressure = Density x Gravity x Height

In this case, the density of water is 1000 kg/m³, and the acceleration due to gravity is approximately 9.8 m/s².

Let's calculate the force step by step:

1. Calculate the pressure exerted by the water: - Density of water = 1000 kg/m³ - Gravity = 9.8 m/s² - Height = 10 cm = 0.1 m

Pressure = 1000 kg/m³ x 9.8 m/s² x 0.1 m = 980 N/m²

2. Calculate the area of the bottom of the vessel: - Length = 20 cm = 0.2 m - Width = 10 cm = 0.1 m

Area = Length x Width = 0.2 m x 0.1 m = 0.02 m²

3. Calculate the force exerted by the water on the bottom of the vessel: - Pressure = 980 N/m² - Area = 0.02 m²

Force = Pressure x Area = 980 N/m² x 0.02 m² = 19.6 N

Therefore, the force exerted by the water on the bottom of the vessel is 19.6 Newtons.

Please note that the above calculation assumes that the vessel is completely filled with water and that the force is exerted uniformly on the entire bottom surface of the vessel.