Unit 8 Review

Static Pressure

100

What is the formula for pressure at a depth "h" in a fluid?

P = P(initial) + pgh

200

Does water pressure at the bottom of a pool depend on the total volume or the depth?

Depth

300

Calculate the pressure 10m underwater (p = 1000kg/m^3).

2 atm (2 * 10^5 Pa)

400

Explain Pascal’s Principle as it relates to a hydraulic lift.

F1 / A1 = F2 / A2

500

If you move a barometer to the top of a mountain, does the mercury column rise or fall?

Fall

Buoyancy

100

State Archimedes’ Principle in one sentence.

Fb = weight of  displaced fluid

200

If an object is floating, how does the Buoyant Force compare to its Weight?

F_b = F_g

300

What is the formula for the Buoyant Force (F_b) acting on a submerged object?

F_b = p_fluidv_displacedg

400

An object with a density of 800kg/m³ is placed in water. What percentage of it is submerged?

80%

500

An object weighs 50N in air and 30N when submerged. What is the weight of the displaced fluid?

20N

Continuity

100

If a pipe's radius doubles, what happens to the cross-sectional area?

*4

200

How does the velocity of a fluid change as it moves from a wide pipe to a narrow one?

Increases

300

 Define "Volume Flow Rate" and provide its standard units.

A * v

m³/s

400

 If the area of a pipe is halved, by what factor does the fluid velocity change?

2* faster

500

A hose with area A leaks, losing half its water. How does v_out change at the nozzle

v is same (mass flow changed, not speed logic)

Bernoulli's

100

Bernoulli’s Equation is essentially a statement of this conservation law.

Energy

200

According to Bernoulli, if the velocity of a fluid increases, what happens to its internal pressure?

Drops

300

Why does a shower curtain pull inward when the water is turned on?

Pressure difference

400

Identify the three "energy" terms represented in the Bernoulli Equation.

Pressure, Kinetic, Potential

500

Use Bernoulli to explain how a curveball curves or how an airplane wing generates lift.

Pressure difference/work