Fluids

Question 1

A ____ is either liquid or gas

Answer 1

A FLUID is either liquid or gas

Question 2

____ is the heaviness of a fluid

Answer 2

DENSITY is the heaviness of a fluid

Question 3

Density is defined as: ____

Unit: ____

Answer 3

Density is defined as: p = m/V

Unit: kg/m³

Question 4

Specific gravity is the density of ____ compared to the density of ____

Answer 4

Specific gravity is the density of A SUBSTANCE compared to the density of WATER

Question 5

Specific gravity is defined as: ____

Unit: ____

Answer 5

Specific gravity is defined as: SG = p(substance)/p(water)

Unit: NO UNIT

Question 6

Density of water is: ____

Answer 6

Density of water is: 1000kg/m³ = 1g/m³

Question 7

Pressure is defined as: ____

Unit: ____

Answer 7

Pressure is defined as: P = F/A

Unit: Pa (N/m²)

Question 8

Pressure of a fluid at rest is independent of ____

Answer 8

Pressure of a fluid at rest is independent of AREA

Question 9

Hydrostatic pressure of a fluid at rest defined as: ____

Unit: ____

Answer 9

Hydrostatic pressure of a fluid at rest defined as: P = pgh

Unit:

Question 10

P = pgh

P - ____
p - ____
g - ____
h - ____

Answer 10

P = pgh

P - PRESSURE
p - DENSITY
g - GRAVITATIONAL CONSTANT
h - DEPTH

Question 11

Atmospheric pressure is: ____Pa

Answer 11

Atmospheric pressure is: 101,000Pa

Question 12

____ is a measure of pressure compared to local atmospheric pressure

Answer 12

GAUGE PRESSURE is a measure of pressure compared to local atmospheric pressure

Question 13

Absolute pressure is defined as: ____

Answer 13

Absolute pressure is defined as: P(abs) = P(gauge) + P(atm)

Question 14

Pascal’s principle states that ____ applied anywhere to an enclosed incompressible fluid will be distributed undiminished throughout that fluid

Answer 14

Pascal’s principle states that PRESSURE applied anywhere to an enclosed incompressible fluid will be distributed undiminished throughout that fluid

Question 15

A hydraulic lifts use the equations: ____

Answer 15

A hydraulic lifts use the equations: F₁d₁ = F₂d₂ OR F₁/A₁ = F₂/A₂

Question 16

____ force is an ____ (direction) force acting on a submerged object, and is equal to the ____ of displaced fluid

Answer 16

BUOYANT force is an UPWARD force acting on a submerged object, and is equal to the WEIGHT of displaced fluid

Question 17

Buoyant force is defined as: ____

Unit: ____

Answer 17

Buoyant force is defined as: F(b) = p(fluid)Vg = p(fluid)AgΔh = m(fluid)g = W(fluid)
Unit: N

Question 18

F(b) = p(fluid)Vg

F(b) - ____
p(fluid) - ____
V - ____
g - ____

Answer 18

F(b) = p(fluid)Vg

F(b) - BUOYANT FORCE
p(fluid) - DENSITY of fluid
V - VOLUME displaced
g - GRAVITY

Question 19

Buoyant force does not change with ____

Answer 19

Buoyant force does not change with DEPTH

Question 20

A floating object displaces an amount of fluid equal to its ____

Answer 20

A floating object displaces an amount of fluid equal to its WEIGHT

Question 21

A fully submerged object displaces an amount of fluid equal to its ____

Answer 21

A fully submerged object displaces an amount of fluid equal to its VOLUME

Question 22

The floating equation states that the submerged fraction equals: ____
Unit: ____

Answer 22

The floating equation states that the submerged fraction equals: Fraction SUBMERGED = p(floating object)/p(fluid)
Unit: %