Question

Вес тела 6 Н. его объём 400 сантиметров в Кубе потонет ли тело в воде? Почему?

Answer 1

Fарх = p * g * V = 1 г/см3 * 10 * 400 см3 = 4000 г * м/см3 = 4 Н => Fapx < Fтяж => тело тонет

Answer 2

Can a body with a weight of 6 N and a volume of 400 cubic centimeters sink in water?

According to Archimedes' principle, an object will sink in a fluid if its weight is greater than the buoyant force acting on it. The buoyant force is equal to the weight of the fluid displaced by the object. To determine if a body with a weight of 6 N and a volume of 400 cubic centimeters will sink in water, we need to compare its weight to the buoyant force exerted by the water.

The weight of the body is given as 6 N. However, we need to convert the volume from cubic centimeters to cubic meters to calculate the buoyant force accurately.

To convert 400 cubic centimeters to cubic meters, we divide by 1,000,000 (since there are 1,000,000 cubic centimeters in a cubic meter):

400 cubic centimeters = 400/1,000,000 cubic meters = 0.0004 cubic meters

Now, we can calculate the buoyant force using the formula:

Buoyant force = density of the fluid x volume of the fluid displaced x acceleration due to gravity

The density of water is approximately 1000 kg/m^3, and the acceleration due to gravity is approximately 9.8 m/s^2.

Buoyant force = 1000 kg/m^3 x 0.0004 m^3 x 9.8 m/s^2

Buoyant force = 0.392 N

Since the weight of the body (6 N) is greater than the buoyant force (0.392 N), the body will sink in water.

Therefore, the body with a weight of 6 N and a volume of 400 cubic centimeters will sink in water.

It's important to note that this calculation assumes the body is a solid object with a uniform density. If the body is hollow or has a non-uniform density distribution, the calculation may be different.