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Answer:
I have answer of 2 questions
Explanation:
1). Fluid friction occurs between fluid layers that are moving relative to each other. This internal resistance to flow is named viscosity. In everyday terms, the viscosity of a fluid is described as its "thickness".
2).Disadvantages of Fluid Friction:
1.Fluid Friction decreases the speed of objects moving through the fluids.
2.It makes speeding up harder.
3.When objects, move through fluids, they lose some energy in overcoming the fluid friction, this decreases their efficiency.
Answer:
a)Fluid friction occurs between fluid layers that are moving relative to each other. This internal resistance to flow is named viscosity. In everyday terms, the viscosity of a fluid is described as its "thickness".
b)Disadvantages of Fluid Friction:
1)Fluid Friction decreases the speed of objects moving through the fluids.
2)It makes speeding up harder.
3)When objects, move through fluids, they lose some energy in overcoming the fluid friction, this decreases their efficiency.
c)The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water .
d) Airplanes and race cars.
e)Fluid friction depends are as following: (i) Speed with respect to fluid.
(ii) Shape of the object.
(iii) Nature of the fluid.
Explanation:
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