## Exercise 3.1 A

Investigate the effect of the depth of the tube head on the height of the water columns. Show the results graphically. Which conclusions can you draw from the results?

Answer: Pressure in water (hydrostatic pressure) grows when going deeper. Hydrostatic pressure increases linearly when going deeper.

## Exercise 3.1 B

Explore the dependence of gas volume and pressure on a graphical representation.

Answer: It is noticed that the pressure is inversely proportional to the volume, $p\propto\frac{1}{V}$

## Exercise 3.1 C

How much pressure was in the balloon? The red liquid in the tube is water.

## Exercise 3.1 D

Is the pressure in the tire according to the manufacturer's recommendations?

## Exercise 3.2 A

How big is the volume of a body?

Answer: $31\ {cm}^3$

## Exercise 3.2 B

How big is the volume of a body?

Answer: $10\ {cm}^3$

## Exercise 3.2 C

How big is the volume of a body?

Answer: $16\ {cm}^3$

## Exercise 3.2 D

How big is the volume of a body?

Answer: $17{,}4\ {cm}^3-\ 17{,}7\ {cm}^3$

## Exercise 3.3 A

Specify the buoyant force.