Chapter 1: Fundamental Concepts

Question 1

define: Fluid Mechanics

Answer 1

a study of the behavior of a gas or liquid that is either at rest or in the motion

Question 2

What are the principles of fluid mechanics based on?

Answer 2

Newton’s Laws of Motion

Question 3

define: Hydrostatics

Answer 3

study of fluids at rest or constant velocity

Question 4

define: Kinematics

Answer 4

study of the geometry of fluid motion

Question 5

define: Fluid Dynamics

Answer 5

study of the forces that cause accelerated motion

Question 6

define: Solid

Answer 6

maintains its shape because the molecules or atoms are densely packed and are held tightly together

Question 7

define: Liquid

Answer 7

composed of molecules that are more mobile than those in a solid; they do not hold thier shape, rahter they flow and take the shape of their container.

Question 8

define: Gas

Answer 8

composed of molecules that are much farther apart than those of a liquid; molecules are free to travel away from each other and therefore fill the entire volume of its container

Question 9

What five basic quantities are used to describe a fluid and its flow?

Answer 9

length, time, mass, force and temperature

Question 10

What are the US Customary units for length, time, force and mass?

Answer 10

Length: feet
Time: seconds
Force: pounds
Mass: slug [lb*s^2/ft]

Question 11

What is the US Customary value for gravity?

Answer 11

32.2 ft/s^2

Question 12

What is the relationship (equation) for mass and weight

Answer 12

mass (slug) = Weight (lb) / [32.2 ft/s^2]

Question 13

What are the units of force and mass in the English Engineering System?

Answer 13

Force is poundforce (lbf). Mass is pound mass (lbm)

Question 14

define: Temperature

Answer 14

a measure of the average energy related to the molecular motion of a substance.

Question 15

define: Absolute Temperature

Answer 15

the temperature measured from a point where the molecules have “zero energy” or no motion.

Question 16

Conversion from Fahrenheit to Rankine

Answer 16

TR=TF+460

Question 17

What is the freezing and boiling point of water in Fahrenheit and Rankine?

Answer 17

Freezing Point: 32 F (492 R)
Boiling Point: 212 F (672 R)

Question 18

What are the SI Units for length, time, mass and force?

Answer 18

length - meters(m), time - seconds (s), mass - kilograms (kg) and force - Newton [kg*m/s^2]

Question 19

What is the SI Value of gravity?

Answer 19

9.81 m/s^2

Question 20

What is the relationship between Weight and mass in SI Units?

Answer 20

W (N) = m(kg)*[9.81 m/s^2]

Question 21

Conversion from Celsius to Kelvin

Answer 21

TK=TC+273

Question 22

What is the freezing and boiling point of water in Celsius and Kelvin?

Answer 22

Freezing Point - 0 C (273 K)
Boiling Point - 100 C (373 K)

Question 23

What are the conversion factors from the English unit to SI units of Length, Mass and Force?

Answer 23

Length: 1 ft = 0.3408 m
Mass: 1 slug = 14.59 kg
Force: 1 lb = 4.448 N

Question 24

What is the conversion from Rankine to Kelvin?

Answer 24

TK=(5/9)*TR

Question 25

What is the conversion from Fahrenheit to Celsius?

Answer 25

TC=(5/9)[TF-32]

Question 26

define: milli (m)

Answer 26

10^-3

Question 27

define: micro

Answer 27

10^-6

Question 28

define: nano (n)

Answer 28

10^-9

Question 29

define: kilo (k)

Answer 29

10^3

Question 30

define: Mega (M)

Answer 30

10^6

Question 31

define: Giga (G)

Answer 31

10^9