Lesson 5

Question 1

Define Density

Answer 1

ρ = m/v

Question 2

What is the pressure at submerged depths

Answer 2

~ ρ = ρo + ρgh
~ ρo = 1.017 x 10^5 ρa

Question 3

What is the buoyant force?

Answer 3

B = ρgv

Question 4

Describe Streamline Flow / Bernoulli’s Equation

Answer 4

~ The simplified form of Bernoulli’s equation can be summarized in the following memorable word equation: Static pressure + Dynamic pressure = Total pressure. Every point in a steadily flowing fluid, regardless of the fluid speed at that point, has its own unique static pressure p and dynamic pressure q.

Question 5

What assumptions must be made for the flow rate to be constant

Answer 5

~ Non-viscous
~ Incompressible fluid
~ Steady motion and non-turbulent

Question 6

What is the equation of Continuity?

Answer 6

~A1V1 = A2V2
~Fluid on the left side must be moving at a faster rate than the fluid on the right for them to have an equal flow rate

Question 7

What is Bernoulli’s Equation?

Answer 7

~ ρ + 1/2ρv12 + ρgy1 = ρ2 + 1/2ρv22 + ρgy2
~ 1/2ρv2 = kinetic energy term
~ ρgy = potential energy
~ ρ + 1/2ρv2 + pgy = constant