Friction is directly proportional to pressure.
Angle of repose is equal to angle of friction.
There is definitely a strong relation between osmosis pressure and water activity. Osmosis is the movement of water from high pressure to low pressure.
Pressure is defined as force per area
Pressure decreases as height increases and vice-versa.
Pressure = force / area
Pressure. Do a Google search on the relation between volcanoes and pressure, or even your question.
Because there is more pressure in the surfaces.
Flabby tyres produce more friction with the road.Less air pressure creates more surface friction, the less surface friction there is the better. (Example look at the very skinny narrow tyres on road racers as they don't need a lot of surface friction while mountain bikes have thick tyres as they need more friction)
The outer diameter of the friction lining, the inner diameter of the friction lining, the coefficient of friction between the plates, the number of friction plates ( in this case 2), the surface pressure acting on the friction plates
Friction can be reduced by using lubricants like oil or grease on surfaces. To increase friction, surfaces can be roughened or materials with higher coefficients of friction can be used. Adjusting the weight or pressure between the surfaces can also increase friction.
Inertia and friction are related in the sense that friction opposes the motion of an object due to inertia. Inertia is the tendency of an object to resist changes in its state of motion, while friction is the force that opposes the relative motion of two surfaces in contact. The presence of friction can affect an object's motion by counteracting its inertia and slowing it down.
1 micron is 1/1000 th of a millimeter.