Bernoulli Practice 2
10 problems · instant feedback · full explanations
Bernoulli: P + ½ρv² + ρgh = constant. Faster flow means lower pressure — the physics behind lift, curveballs and perfume sprayers.
Q1.
Bernoulli's equation expresses conservation of:
Multiple choice · Easy
Q2.
In horizontal flow, where fluid speed increases:
Multiple choice · Easy
Q3.
Air flows at 85 m/s over a wing and 75 m/s beneath. What is the pressure difference? (ρ = 1.225 kg/m³. Answer in Pa.)
Numerical answer (Pa) · Medium
Q4.
With 980 Pa pressure difference over 20 m² of wing, what is the lift force? (N)
Numerical answer (N) · Medium
Q5.
Water at 2 m/s enters a pipe whose area shrinks to 1/4. What is the exit speed?
Multiple choice · Medium
Q6.
Water exits a hole 4 m below the surface of a large tank. What is the exit speed? (Use g = 9.8. Answer in m/s.)
Numerical answer (m/s) · Hard
Q7.
Bernoulli's equation assumes steady, incompressible, frictionless flow.
True / False · Easy
Q8.
Faster-moving fluid exerts higher pressure on its surroundings.
True / False · Medium
Q9.
A shower curtain billows inward because of:
Multiple choice · Hard
Q10.
A curveball curves mainly because of:
Multiple choice · Hard