Which of the following statements best describes an ideal fluid as used in…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids
Problem
Which of the following statements best describes an ideal fluid as used in introductory fluid-mechanics models?
(a) It experiences no viscosity but is compressible, so its density varies with pressure.
(b) It is incompressible because its density is nearly zero, allowing pressure to remain constant everywhere.
(c) It is incompressible and experiences no internal friction (viscosity).
(d) It flows only at very low speeds to avoid turbulence.