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you put: a squared over b squared = surface area of the smaller solid over surface area of the bigger solid
A helicopter needs a solid surface to fly over.
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.
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".
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.
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.
true! When solid surfaces slide over each other, the kind of friction that occurs is called sliding friction.
A hydrophobic compound is one that will not dissolve in water, and, if the compound is solid, one on which a drop of liquid water will not spread spontaneously over the surface.