Question

Airplane flight is best illustrated by
Boyle's law.
Bernoulli's principle.
Archimedes' principle.
Heat law

7 What is the buoyant force acting on a 10-ton ship floating in the ocean
10 tons
more than 10 tons
less than
depends on density of seawater

8 How much pressure do you experience, when you balance a 5 kg ball on the tip of your finger, which has an area of
1cm2?
490 kPa
4600 Pa
34 N
No answer

9 If you wish to warm 100 kg of water by
20oC
for your bath, how much energy is required? (Specific heat capacity of water is
1cal/goC
500 kcal
1000 kcal
2000 kcal.
3000 kcal