The reason that says that Venus should have had water from the sources the same as the Earth, but all of those are gone is not a correct reason why Venus is dry. Venus is the hottest planet in the solar system because of the atmosphere it has. The atmosphere of Venus contains 95% of CO2 causing it be hot and dry.
There are three fundamental forces that act at a distance. They are gravitational, electromagnetic and nuclear forces.
The major reason why a wet saw that is used in cutting optical crystals is constantly lubricated with oil is largely due to friction, lubrication decreases friction and minimises the increase of internal energy.
Friction is basically the coming together of two parts that rubs against each other, it causes heat and lead to deterioration of surfaces, it can also lead to wear and tear.
Although, despite it down side, friction is desire-able in most applications
e.g the brake system of vehicles, and if not for friction, we humans cannot walk without falling
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