Physics
Fluid Dynamics
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#33 The buoyant force on a submerged object is:
A) always equal to the weight of the displaced fluid
B) increased when the object is heavier
C) zero in liquids
D) greater in gases than in liquids
#34 When a fluid flows through a constriction, the velocity:
A) increases
B) decreases
C) remains constant
D) fluctuates
#35 The term ‘viscosity’ is used to describe:
A) the resistance to flow in a fluid
B) the density of a fluid
C) the speed of sound in a fluid
D) the temperature of a fluid
#36 The rate of flow of a fluid through a pipe depends on:
A) the radius and pressure
B) the temperature and pressure
C) the fluid’s density and viscosity
D) only the temperature
#37 The buoyant force is equal to:
A) the weight of the displaced fluid
B) the weight of the object
C) the volume of the fluid
D) the density of the fluid
#38 The viscosity of a fluid is related to:
A) the temperature of the fluid
B) the density of the fluid
C) the internal friction within the fluid
D) the volume of the fluid
#39 The buoyant force is equal to:
A) the weight of the displaced fluid
B) the weight of the object
C) the volume of the fluid
D) the density of the fluid
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