Fluids

A fluid particle in a pipe experiences a net force. According to Newton's laws, what must be true about the particle?

A water particle in a river experiences a net force of $5 \times 10^{-6}$ N. If the particle's mass is $2 \times 10^{-9}$ kg, what is the magnitude of its acceleration?

Consider a system of interacting fluid particles in a viscous fluid. If the net external force on a specific particle is zero, but the particle is still moving, what can be said about the forces from surrounding particles?

Which of the following best describes how internal interactions between fluid particles contribute to macroscopic fluid behavior?

A fluid flows through a pipe with varying cross-sectional areas. At point A, the pressure is $P_A$ and the velocity is $v_A$. At point B, the pressure is $P_B$ and the velocity is $v_B$. If no external work is done on the fluid between points A and B, and assuming the fluid is incompressible and inviscid, what is the w...

What is the primary cause of the buoyant force on an object submerged in a fluid?

A cube with side length 0.1 m is fully submerged in water (density 1000 kg/m³). What is the buoyant force on the cube?

A wooden block with density $\rho_{wood}$ and volume $V$ is floating in a fluid with density $\rho_{fluid}$. What fraction of the block's volume is submerged?

Which of the following statements best describes Archimedes' Principle?

A 0.5 $m^3$ object is submerged in water (density 1000 kg/$m^3$). What is the buoyant force acting on the object?