Fluid is a substance that:a.has the same shear at a point regardless of its motionb.cannot remain at rest under action of any shear forcec. flows.d.cannot be subjected to shear forcese.always expands until it fills any container
Question
Fluid is a substance that:a.has the same shear at a point regardless of its motionb.cannot remain at rest under action of any shear forcec. flows.d.cannot be subjected to shear forcese.always expands until it fills any container
Solution
The correct answer is c. Fluid is a substance that flows. This is the defining characteristic of fluids, which include liquids, gases, plasmas, and some types of solids like slurries and granular materials. They can flow and take the shape of their containers because they cannot withstand shear stress, which is a force that tends to cause different parts of a body to slide against each other in a direction parallel to their plane of contact.
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