Because the natural world is full of hydrophobic and hydrophilic surfaces, the basics of the phenomenon have been known by scientists for at least two centuries. For example, the lotus leaf is a well-known example of a hydrophobic material, protecting the water-dwelling plant from becoming waterlogged.
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system.Value of mechanical advantage is load(L)/Effort(E). â¦.
1 The UK has a comparative advantage in producing computers. 2  This is because it has a lower opportunity cost of .025 compared to Chinaâs 0.66). 3  If each country now specializes in one good then assuming constant returns to scale output will double.his means a country can produce a good relatively cheaper than other countries. The theory of comparative advantage states that if countries specialise in producing goods where they have a lower opportunity cost â then there will be an increase in economic welfare.