you put: a squared over b squared = surface area of the smaller solid over surface area of the bigger solid
When a solid surface slides over another solid surface, friction occurs due to the resistance to motion caused by the microscopic roughness of the surfaces. The rougher the surfaces, the higher the friction generated between them. The friction force depends on the nature of the materials in contact and the force pressing them together.
No, that is not the right spelling.The correct spelling is modelling in British English."Her modelling career was over".Or modeling in American English.Pass me the modeling clay, please".
Tonal modelling is a means for the artist to create a sense of three-dimensional form in a painting. It involves using gradations of tone over the surface so that the lighter surface appears closer to the viewer and the darker side further away.
Breaking up the solid into smaller pieces increases the amount of surface area exposed to the solvent. Because the solvent is acting over a larger surface area, the rate of dissolving increases.
sliding
3"/75mm of sand over a solid level surface.
A solid layer forming is due to oxidation of the surface. This cooling effect is due to the surface being exposed. To prevent this, you would need to get rid of all of the air and put a layer of plastic wrap over the surface without any air under the plastic.
Pressure exerted by a solid object is calculated by dividing the force exerted by the object over the surface area on which it is applied. The formula is pressure = force / area. The pressure increases as the force increases or the surface area decreases.
Particles of the oxidised metal may build up and form a solid surface over the reef
A helicopter doesn't need a solid surface to fly over, however when hovering, it takes a little less power to maintain a stationary hover over a surface than up in midair. That's because at normal hovering height (3 ft.) a column of air pressure (called ground effect) is built up underneath the rotor blades that assists the aircraft in maintaining it's altitude.
Io is a moon of Jupiter and has a rocky surface, making it a solid body like most other moons and planets. It is one of the most geologically active bodies in the solar system, with over 400 active volcanoes constantly reshaping its surface.