Question

!!!ОЧЕНЬ НАДО ПОЖАЛУЙСТА!Чему равно давление внутри воды на уровне 5 м?Какое давление оказывает на стол гиря массой 2,с помощью основание 25 см(2) кубических!

Answer 1

1) po=1000 кг/м3    g=10 Н/кг   h=5 м   p=?
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p=po*g*h=1000*10*5=50000 Па   (50 кПа)
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2)  m=2 кг    S=25*10^-4 м2   p=?
p=F/S=m*g/S=2*10/(25*10^-4)=8000 Па   (8 кПа)
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Answer 2

Water Pressure at a Depth of 5m

The pressure inside water at a depth of 5 meters can be calculated using the formula: pressure = density × gravity × height. The density of water is approximately 1000 kg/m^3, and the acceleration due to gravity is approximately 9.81 m/s^2.

Using the given depth of 5m, the pressure can be calculated as follows: pressure = 1000 kg/m^3 × 9.81 m/s^2 × 5m.

The pressure inside water at a depth of 5 meters is approximately 49,050 pascals.

Pressure Exerted by a Weight on a Table

To calculate the pressure exerted by a weight on a table, the formula pressure = force / area is used. In this case, the force is the weight of the object and the area is the contact area between the object and the table.

Given: - Weight of the object (mass) = 2.5 kg (assuming "2,с" is a typo and should be "2.5") - Area of the base = 25 cm^2 = 0.0025 m^2

The pressure exerted by the weight on the table can be calculated as follows: pressure = 2.5 kg × 9.81 m/s^2 / 0.0025 m^2.

The pressure exerted by the weight on the table is approximately 9,810 pascals.

Answer 3

Calculating Pressure at a Depth of 5m in Water

To calculate the pressure at a certain depth in a fluid, we can use the formula:

Pressure = Density × Acceleration due to gravity × Depth

Given that the density of water is approximately 1000 kg/m^3 and the acceleration due to gravity is approximately 9.81 m/s^2, we can calculate the pressure at a depth of 5m in water.

Using the formula: Pressure = 1000 kg/m^3 × 9.81 m/s^2 × 5m

This gives us: Pressure = 49050 pascals

Therefore, the pressure at a depth of 5m in water is approximately 49050 pascals.

Calculating Pressure Exerted by a 2.5 kg Weight on a Table

To calculate the pressure exerted by the weight on the table, we can use the formula:

Pressure = Force / Area

Given that the mass of the weight is 2.5 kg and the area of the base is 25 cm^2 (which is 0.0025 m^2), we can calculate the pressure exerted by the weight on the table.

First, we need to calculate the force exerted by the weight using the formula: Force = Mass × Acceleration due to gravity

Force = 2.5 kg × 9.81 m/s^2

This gives us: Force = 24.525 newtons

Now, we can calculate the pressure using the formula: Pressure = 24.525 newtons / 0.0025 m^2

This gives us: Pressure = 9810 pascals

Therefore, the pressure exerted by the weight on the table is approximately 9810 pascals. I hope this helps! If you have further questions, feel free to ask.