Physical Quantities (1)

Question 1

Basic Units

Answer 1

metre (m) - length
second (s) - time
kilogram (kg) - mass 
kelvin (K) - temperature 
ampere (A) - current 

(make sure all numbers are in these units before using equations)

Question 2

Derived Units

Answer 2

made by combining basic units

Question 3

frequency

Answer 3

hertz (Hz)
/s
s^-1

Question 4

force

Answer 4

newton (N)
kg(m/s²)
kg m/s²

Question 5

pressure

Answer 5

pascal (Pa)
N/m²
kg/m/s²

Question 6

energy/work

Answer 6

joules (J)
Nm
kg m²/s²

Question 7

power

Answer 7

watt (w)
J/s
kg m² s^-3

Question 8

electric charge

Answer 8

coulomb (C)
As
As

Question 9

electric potential

Answer 9

volt (V)
W/A
kg m² s^-3 A^-1

Question 10

electric capacitance

Answer 10

farad (F)
C/V
kg^-1 m^-2 s^4 A²

Question 11

electric resistance

Answer 11

ohm ( Ω)

V/A

Question 12

magnetic flux

Answer 12

weber (Wb)

Vs

Question 13

magnetic flux density

Answer 13

tesla (T)

Wb/m²

Question 14

inductance

Answer 14

henry (H)

Wb/A

Question 15

temperature

Answer 15

degree Celsius (°C)
K - 273.15
K

Question 16

plane angle

Answer 16

radian (rad)

Question 17

activity

Answer 17

becquerel (Bq)
/s
s^-1

Question 18

tera- (T)

Answer 18

10 ^ 12

Question 19

giga- (G)

Answer 19

10 ^ 9

Question 20

mega- (M)

Answer 20

10 ^ 6

Question 21

kilo- (k)

Answer 21

10 ^ 3

Question 22

centi- (c)

Answer 22

10 ^ -2

Question 23

milli (m)

Answer 23

10 ^ -3

Question 24

micro- (μ)

Answer 24

10 ^ -6

Question 25

nano- (n)

Answer 25

10 ^ -9

Question 26

pico- (p)

Answer 26

10 ^ -12

Question 27

micrometer

Answer 27

measures diameter
accurate to 0.01mm
(tighten ratchet till it clicks, record zero error, add/subtract from final measurement)

Question 28

zero error

Answer 28

the amount you need to add or subtract to make your starting point zero
(due to wear and tear instruments need to be zeroed}

Question 29

vernier callipers

Answer 29

diameter

accurate to 0.2mm

Question 30

vernier scales

Answer 30

• measure angles in spectrometer

- use secondary scale to measure line that lines up best