1. What could be true to the resultant forceapplied on a sytem whenit is to be in a state of balanced forces? A. Zero B. Infinite C.One D. None of These 2. A submarine sinks in and floats on water because _____ A. of its mass B.water is taken out ofits ballast tanks C. its materials are built to make it sink or bloat D. it is affected by the bouyant force 3. WHich of the following can be used to determine wheter an object will float or sink on water? A. mass B. volume C. density D. specific gravity
Viscosity
The measure of the resistance of a fluid to flow is known as viscosity. Most fluids have some resistance to motion, the resistance provided by the fluid is called viscosity. This resistance is created by the force of attraction between the fluid molecules. If you pour water through a funnel, it flows easily and quickly, because it has very little resistance. But if you pour honey through a funnel, it may take a little time longer, as the density of honey is high.
Poiseuille's Law
The law of Poiseuille or Poiseuille's equation states that the pressure drop of an incompressible fluid especially a liquid in a laminar flow that passes through a cylindrical tube of length L, radius r, pressure gradient ΔP, and mainly depends on the viscosity of the fluid is nothing but the pressure difference of the layers of fluids. ΔP=P1-P2
Drag Forces
Forces that occur due to the movement of fluid are known as fluid mechanics. Following are the fluids present:
1. What could be true to the resultant forceapplied on a sytem whenit is to be in a state of balanced forces?
A. Zero B. Infinite C.One D. None of These
2. A submarine sinks in and floats on water because _____
A. of its mass B.water is taken out ofits ballast tanks C. its materials are built to make it sink or bloat
D. it is affected by the bouyant force
3. WHich of the following can be used to determine wheter an object will float or sink on water?
A. mass B. volume C. density D. specific gravity
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