Basics

Question 1

Density=mass / volume

Answer 1

Kgm^-3

Question 2

Momentum= mass * velocity

Answer 2

Kgms^-1

Question 3

Force= mass * acceleration

Answer 3

Kgms^-2

Question 4

Pressure=force / area

Answer 4

Kgm^-1 s^-2

Question 5

Energy=force * distance

Answer 5

Kgm^2 s^-2

Question 6

Power = work / time

Answer 6

Kgm^2 s^-3

Question 7

Electric charge= charge * time

Answer 7

As

Question 8

Potential difference= energy / charge

Answer 8

Kgm^2 A^-1 s^-3

Question 9

Resistance =potential difference / current

Answer 9

Kgm^2 A^-2 s^-3

Question 10

Distance (v or s)

Answer 10

Scaler

Question 11

Displacement (v or s)

Answer 11

Vector

Question 12

Speed (v or s)

Answer 12

Scaler

Question 13

Velocity (v or s)

Answer 13

Vector

Question 14

Mass (v or s)

Answer 14

Scaler

Question 15

Weight (v or s)

Answer 15

Vector

Question 16

Pressure (v or s)

Answer 16

Scaler

Question 17

Force (v or s)

Answer 17

Vector

Question 18

Energy (v or s)

Answer 18

Scaler

Question 19

Momentum (v or s)

Answer 19

Vector

Question 20

Temp (v or s)

Answer 20

Scaler

Question 21

Acceleration (v or s)

Answer 21

Vector

Question 22

Volume (v or s)

Answer 22

Scaler

Question 23

Electric current (v or s)

Answer 23

Vector

Question 24

Density (v or s)

Answer 24

Scaler

Question 25

Torque/moment (v or s)

Answer 25

Vector

Question 26

Laminar flow

Answer 26

~layers move steady without mixing

Question 27

Turbulent flow

Answer 27

~layers overlap

~Eddie currents

Question 28

Stokes law

Answer 28

Viscous drag = 6 [pie] [mu] [r] [v]

Mu=viscosity of fluid
R=radius of sphere
V=velocity of the sphere relative to the fluid

Question 29

What does stokes law assume

Answer 29

~It assumes that the fluid is uniform throughout and that the flow is laminar
~Therefore only travels at low speeds
~Small…
~Spherical object

Question 30

Upthrust definition

Answer 30

The weight of fluid displaced

Question 31

Upthrust equation

Answer 31

Volume * density