Question

Медную деталь массой 7,12 кг опустили в аквариум высотой 40 см , заполненный водой Последовательность действий: А)определите объём детали( ро меди =8900кг/м в кубе) Б) определите давление воды на дно аквариума В) определите силу тяжести, действующую на тело Г)чему=выталк.сила, действ. на деталь

Answer 1

Не забудь поблагодарить;) ! ! ! ! !

Answer 2

Calculation of the Volume of the Copper Detail

To determine the volume of the copper detail, we can use the formula:

Volume = Mass / Density

Given that the mass of the copper detail is 7.12 kg and the density of copper is 8900 kg/m³, we can calculate the volume as follows:

Volume = 7.12 kg / 8900 kg/m³

Using this formula, we find that the volume of the copper detail is approximately 0.0008 m³.

Calculation of the Pressure of the Water on the Bottom of the Aquarium

To determine the pressure of the water on the bottom of the aquarium, we can use the formula:

Pressure = Density × Gravity × Height

Given that the height of the water in the aquarium is 40 cm (or 0.4 m) and the density of water is approximately 1000 kg/m³, we can calculate the pressure as follows:

Pressure = 1000 kg/m³ × 9.8 m/s² × 0.4 m

Using this formula, we find that the pressure of the water on the bottom of the aquarium is approximately 3920 Pa (Pascal).

Calculation of the Force of Gravity Acting on the Copper Detail

To determine the force of gravity acting on the copper detail, we can use the formula:

Force = Mass × Gravity

Given that the mass of the copper detail is 7.12 kg and the acceleration due to gravity is approximately 9.8 m/s², we can calculate the force as follows:

Force = 7.12 kg × 9.8 m/s²

Using this formula, we find that the force of gravity acting on the copper detail is approximately 69.776 N (Newton).

Calculation of the Buoyant Force Acting on the Copper Detail

The buoyant force acting on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. In this case, the fluid is water.

To calculate the buoyant force, we need to know the volume of the copper detail (which we calculated earlier) and the density of water.

The density of water is approximately 1000 kg/m³. The volume of the copper detail is approximately 0.0008 m³.

Buoyant Force = Density of Water × Volume of Copper Detail × Gravity

Buoyant Force = 1000 kg/m³ × 0.0008 m³ × 9.8 m/s²

Using this formula, we find that the buoyant force acting on the copper detail is approximately 7.84 N (Newton).

Calculation of the Net Force Acting on the Copper Detail

The net force acting on the copper detail is the difference between the force of gravity and the buoyant force.

Net Force = Force of Gravity - Buoyant Force

Net Force = 69.776 N - 7.84 N

Using this formula, we find that the net force acting on the copper detail is approximately 61.936 N (Newton).

Please note that the above calculations assume that the copper detail is fully submerged in water and that there are no other forces acting on it.