The weight of the aluminum kettle is 0.4 kg. Determine the mass of the same copper kettle.

To solve this problem, we need to know the density of aluminum and copper. The density of aluminum is 2700 kg / m ^ 3. The density of copper is 8900 kg / m ^ 3

Now to the task. The mass of the body is equal to the product of the volume of the case by its density. We have the mass of the kettle and the density of aluminum, so we can find the volume of the kettle:

m = p * v

v = m / p1

Since the teapots are the same, their volume will be the same. From here we find the mass of the copper teapot:

m = v * p2

Instead of v2, substitute v = m / p1 and get:

m = m / p1 * p2 = 0.4 / 2700 * 8900 = 1.32 kg.

Answer: 1.32 kg.