Physics
Fluid Dynamics
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#25 Bernoulli’s equation accounts for:
A) the conservation of energy in a flowing fluid
B) the fluid’s viscosity
C) the density of a gas
D) the compressibility of fluids
#26 The viscosity of a fluid is a measure of:
A) its internal resistance to flow
B) its density
C) its compressibility
D) its temperature
#27 Poiseuille's law describes the flow rate of a fluid in a pipe based on:
A) viscosity, pressure, and radius
B) density, temperature, and velocity
C) velocity, pressure, and volume
D) area, temperature, and pressure
#28 The Reynolds number predicts:
A) whether the flow will be laminar or turbulent
B) the pressure drop in a pipe
C) the temperature gradient in a fluid
D) the velocity of sound in a fluid
#29 The relationship between the velocity of a fluid and the area of the pipe in a steady flow is described by:
A) the continuity equation
B) Bernoulli’s equation
C) Archimedes' principle
D) Coulomb's law
#30 The drag force on an object moving through a fluid is:
A) dependent on the velocity squared
B) independent of the object's speed
C) inversely proportional to velocity
D) directly proportional to the object’s mass
#31 In fluid dynamics, the term ‘viscosity’ refers to:
A) the resistance to flow in a fluid
B) the mass density of a fluid
C) the speed of sound in a fluid
D) the pressure difference in a fluid
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