## Exercise 3.4 A

Specify the density of a body? What kind of material is the body made of?

Answer: $2{,}7\ g / {cm}^3$

## Exercise 3.4 B

Specify the density of a body. What material could the body be?

Answer: $8{,}3\ g/{cm}^3 - 8{,}5\ g/{cm}^3$

## Exercise 3.4 C

Specify the density of a body. What kind of material is the body made of?

Answer: $7670\ kg/m^3 -\ 7820\ kg/m^3$

## Exercise 3.4 D

Specify the density of a body.

Answer: $2{,}8\ g/{cm}^3$

## Exercise 3.4 E

Determine the density of the liquid and the mass of the buret.

Tip: Derive the expression for the added mass as a function of depth and place the observation values (h, m) in the
coordinate system.
Answer: $m_{buret}=33\ g$; $990\ kg/m^3$

## Exercise 3.4 F

Determine the density of the weights. What material could the weight be?

Answer: $7700\ \frac{kg}{m^3}$

## Exercise 3.4 G

Determine the density of the unknown liquid.

How was the buoyant calculated?
Answer: $820\ \frac{kg}{m^3}$