Question

Какая часть дубового полена находится над водой? Плотность дуб. полена= 700кг/м3

Answer 1

На 0,3h держи только ответ записал , но правильный) 

Answer 2

Part of Oak Log Above Water

The part of a oak log that is above water depends on the density of the oak log and the density of water.

Density of Oak Log: The density of oak wood is approximately 700 kg/m³.

Density of Water: The density of water is approximately 1000 kg/m³.

To determine the part of the oak log that is above water, we can use the principle of buoyancy. When an object is placed in water, it displaces an amount of water equal to its own volume. If the object is less dense than water, it will float and part of it will be above the water surface.

Calculation

Using the given density of the oak log (700 kg/m³) and the density of water (1000 kg/m³), we can calculate the portion of the oak log that is above water.

The portion of the oak log above water can be calculated using the formula:

Portion above water = (Density of water) / (Density of oak log)

Substituting the given values:

Portion above water = 1000 / 700 ≈ 1.43

This means that approximately 1.43 times the volume of the oak log is above the water surface when it is floating.

Conclusion

Based on the given densities, approximately 1.43 times the volume of the oak log would be above the water surface when it is floating.