Topic 1 - Physical quantities and units

Question 1

Length

l

Answer 1

m

metre

Question 2

Time

t

Answer 2

s

seconds

Question 3

Current

I (big i)

Answer 3

A

amperes

Question 4

Thermodynamic Temperature

T or theta

Answer 4

K

kelvin (degrees)

Question 5

Luminous Intensity

L

Answer 5

cd

candela

Question 6

Mass

m

Answer 6

Kg

Kilogram

Question 7

Amount of a substance

n

Answer 7

mol

mole (6.02 x 10^23)

Question 8

Fundamental quantities?

seven

Answer 8

Mass
Luminous Intensity
Length
Time
Current
Amount of a Substance
Thermodynamic Temperature

Question 9

Area

Answer 9

m^2

Question 10

volume

Answer 10

m^3

Question 11

velocity/speed

Answer 11

ms^-1

Question 12

Acceleration

a

Answer 12

ms^-2

Question 13

Density

rho (p thing)

Answer 13

Kgm^-3

Question 14

Frequency

Hertz

Answer 14

s^-1

Question 15

Pressure

Pascal

Answer 15

Kgm^-3 s-2

Question 16

Force

Newton

Answer 16

Kgms^-2

Question 17

Momentum

p

Answer 17

m^2 s^-1

Question 18

Energy

Joule

Answer 18

Kgm^2 s^-2

Question 19

Power

Watt

Answer 19

Kgm^2 s^-3

Question 20

Charge

Q, Coulomb

Answer 20

As

Question 21

Voltage

V, volts

Answer 21

Kgm^2 s^-2 A^-1

Question 22

Resistance

Ohm, ohm sign

Answer 22

Kgm^-2 s^-4 A^-2

Question 23

Specific Heat Capacity

c

Answer 23

m^2 s^-2 K^-1

J/kg⋅K

Question 24

What is homogenity?

Answer 24

when an equation has the same units on both sides

Question 25

State

The prefixes

in ascending order

Answer 25

pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M),
giga (G), tera (T

Question 26

What is an Error?

Answer 26

A problem tha causes a reading to be different from the actual value

Question 27

What is an Uncertainty?

Answer 27

The range of values around which the true value can be found

Question 28

What is