Units/Symbols
What do capital V and lowercase v stand for respectively?
V - Volume
v - velocity
What two states of matter are considered fluids?
Liquid and Gas
What is the equation for density?
p = m/v
density = mass divided by volume
Which is closer to being an ideal fluid, water or honey?
What does the greek letter rho stand for?
Density
If the end of a hose is squeezed and the area decreases, what happens to the velocity of the water?
Velocity increases with smaller area.
What is the equation for Pressure?
P = F/A
Pressure = Force/Area
Whose (famous scientist) principal creates lift on an airplane wing?
Bernoulli's Principle
What are the SI units for pressure?
Pa - Pascal
If a scuba diver dives down and the depth below the surface increases, what happens to the pressure felt by the diver?
Pressure increases
Equation for guage pressure? (Pressure at a height under water)
P = pgh
Pressure = density * gravity * height
What is the primary variable that a boat designer needs to increase to increase the buoyant force of a boat?
Volume
What symbol is used to represent volumetric flow rate?
Q
The force on a surface caused by pressure is always ______ to the surface?
a.parallel
b.45 deg
c.perpendicular
c. perpendicular
What is the equation for Buoyant force?
Fb = pVg
Whose (famous scientist) principle states that pressure in = pressure out? This is used in hydraulics.
Pascal's Principle
Convert 1 m^2 to cm^2
10,000 cm^2
Daily Double
If the weight of an object is measured to be 85N in air and 60N in water, what is the buoyant force acting on the object?
What is the equation Q = Av used for?
Volumetric Flow Rate
Whose (famous scientist) principle states that an object submerged in a fluid (liquid or gas) experiences an upward buoyant force equal to the weight of the fluid it displaces?
Archimedes Principle