5) Benzene at 20°C has a viscosity of 0.000651 Pa-s. What shear stress is required to deform this fluid at a strain rate of 4900 s-1 ?

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.