Unit 1

Question 1

Liquid Properties

Answer 1

Typically incompressible
Form surface within container
Have surface tension - can be poured

Question 2

Gas Properties

Answer 2

Compressible
Take shape of entire container
No surface tension - cannot be poured

Question 3

Primary Dimensions

Answer 3

length, mass, time, temperature, current

Question 4

Secondary Dimensions

Answer 4

Expressed in terms of primary dimensions, such as force is M*L/T^2

Question 5

Pressure Equation

Answer 5

P=F/A

Question 6

Pascal’s Laws

Answer 6

1. Pressure is uniform in every direction

2. Pressure force is always perpendicular to the surface

Question 7

Density equation

Answer 7

p=M/V

Question 8

Ideal Gas Law

Answer 8

PV=nRT OR P=pRT where p=density

Question 9

Density changes in response to:

Answer 9

Temperature and Pressure

Question 10

Specific Weight Equation

Answer 10

y=pg where y=specific weight & p=density

Question 11

Specific Gravity Equation

Answer 11

SG=density of fluid/density of water at 4C

Question 12

Bulk Modulus of Elasticity (E) Definition

Answer 12

Property that relates changes in pressure to changes in volume (ie. expansion or contraction)

Question 13

Bulk Modulus Equation

Answer 13

E=-change in pressure/fractional change in volume

E=-change in pressure/fractional change in density

Question 14

Elasticity is often called:

Answer 14

the compressibility of the fluid

Question 15

T/F: Bulk modulus is variable

Answer 15

True

Question 16

Viscosity Definition

Answer 16

Viscosity is the measure of a fluid’s resistance to deformation under shear stress –> resistance to flow

Question 17

Viscosity is a function of:

Answer 17

Temperature