Chapter 1

Question 1

What are the 5 fundamental dimensions

Answer 1

1. Length
2. Mass
3. Time
4. Temperature
5. Electric current

Question 2

What is Length (L)

Answer 2

Measure of distance

Question 3

What is mass (M)

Answer 3

Amount of matter in a body

Question 4

What is time (T)

Answer 4

The interval between happenings

Question 5

What is temperature

Answer 5

Measure of how hot or cold

Question 6

What is electric current

Answer 6

Measure of electron flow

Question 7

What are the fundamental dimensions of Force

Answer 7

ML/ T^2

Question 8

What are the fundamental dimensions of acceleration

Answer 8

L / T^2

Question 9

What are the fundamental dimensions of Energy

Answer 9

since E = force x distance

= M L ^2 / T^2

Question 10

What are the fundamental dimensions of power

Answer 10

Since P = energy/ time

= ML^2 / T^3

Question 11

What are the fundamental dimensions of Pressure

Answer 11

Since pressure = Force / area^2

= (M L/ T^2) / L^2

Question 12

What is the cgs system

Answer 12

Centimetre, gram, second system

Question 13

What is derived unit of volume in cgs

Answer 13

cc ( cubic centimeter )

Question 14

What is derived unit of force in cgs

Answer 14

dyne

Question 15

What is derived unit of Energy

Answer 15

erg

Question 16

1 joule = ? erg

Answer 16

10^7 erg

Question 17

1 calorie = ? erg

Answer 17

4.18 x 10^7 erg

Question 18

What is the mks system

Answer 18

metre, kilogram, second system

Question 19

What is the fps system

Answer 19

foot - pound-second system

Question 20

1 mol = ? molecules

Answer 20

6.023 x 10^23 - avogadro number

Question 21

What is avogadro number equal to

Answer 21

the number of atoms in 12g of carbon

Question 22

unit for molar mass

Answer 22

g/mol or kg/kmol

Question 23

moles equation

Answer 23

Mass (g ) / Molar mass (g/mol)

Question 24

what should all the mol fractions of a component add up to

Answer 24

1

Question 25

What is density

Answer 25

Density = mass / volume

Question 26

What is specific volume

Answer 26

Specific volume = volume/ unit mass

it is the reciprocal of density

Question 27

What is specific gravity

Answer 27

S.G = density of substance at T & P conditions / Density of reference substances

Question 28

What is S.G of Gasoline (ρ= 48.7 lbm/ft3) at 60 oF, relative to 60 oFwater (ρ= 62.4 lb/ft3)?

Answer 28

S.G = 48.7 /62.4 = 0.78