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⚗ Fluid Dynamics★★☆ Medium
Which water tank empties faster?
RHRHAB
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Fluid Dynamics
Bernoulli, viscosity, pipe flow, tank emptying, buoyancy puzzles.
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Thermodynamics
Heat transfer, entropy, Carnot cycles, gas law applications.
20 questions
Structural Mechanics
Stress, strain, beam bending, material failure, load paths.
18 questions
Fermi Estimation
Order-of-magnitude reasoning, real-world scale problems.
22 questions
Orbital Mechanics
Kepler's laws, delta-v, transfer orbits, re-entry physics.
16 questions
Electromagnetism
Circuits, magnetic fields, induction, Maxwell's equations.
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⚗ Fluid Dynamics★★☆ Medium
A ball is submerged at 10m depth in ocean vs. a freshwater lake. Where does it experience more buoyancy?
A
In the ocean — higher density fluid
B
In the lake — lower pressure
C
Same — depth is equal
D
Depends on the ball's material

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