CHAPTER 1CHAPTER 1Introduction To Introduction To

PhysicsPhysics

natural matter.

Forces Motion HeatLight

WavesElectricity &

ElectromagnetismElectronics

Radioactivity

measured

value unit

1 m, 80 ms-1

Length, intensity, force, speed & etc.

derived

combining

l

m

t

I

T

meter

kilogram

second

Ampere

Kelvin

m

kg

s

A

K

Relationship with base units Symbol Derived

unit

m ÷ s

m x v

ms-1 ÷ s

kg x ms-2

N ÷ m2

kg x ms-2

v

p

a

F

P

W

ms-1

kgms-1

ms-2

N

Pa orNm-2

N

6.37 x 106 m

9.11 x 10-31 kg

3.00 x 10-5 m

7.20 x 10-8 m

5.50 x 10-7 m

1.00 x 1012

1.00 x 109

1.00 x 106

1.00 x 103

1.00 x 102

1.00 x 101

1.00 x 10-1

1.00 x 10-2

1.00 x 10-3

1.00 x 10-6

1.00 x 10-9

1.00 x 10-12

T

G

M

k

h

D

d

c

m

µ

n

p

500 m

500 m

no

left

distance displacementspeed velocity

heavy light

high

high

low

low

low

high

high

low

0.1

0.01

0.001

low

moderate

high

0.02 A / 0.1 A 1 mA

0.1 A

0.02 A 0.3 A

Ammeter (b), because it has the smallest value of division.

0.2 s

8.2 s 0.1 0C

electric current

volume

length

2.5

Length diameter , depth0.01

0.1

0.1

0.01

0.09

0.26 cm

0.20 cm 0.06 cm

2.15 cm 3.24 cm

+0.04 cm

diameter thickness

0.50 mm ÷ 50 0.01 mm

0.01 mm

+0.06 mm -0.03 mm