Exercise 3.1 A

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

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

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

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

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

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

Answer: 102 kPa

Exercise 3.1 D

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

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

Answer: No.

Exercise 3.2 A

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

How big is the volume of a body?

Answer: $31\ {cm}^3$

Exercise 3.2 B

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

How big is the volume of a body?

Answer: $10\ {cm}^3$

Exercise 3.2 C

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

How big is the volume of a body?

Answer: $16\ {cm}^3$

Exercise 3.2 D

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

How big is the volume of a body?

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

Exercise 3.3 A

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

Specify the buoyant force.

Answer: 0,16 N

Exercise 3.3 B

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

Specify buoyant force acting on a body.

Answer: 0,30 N