Wednesday, February 27, 2013

Form 4 Physics Chapter 1

Hoo Sze Yen

Physics SPM 2008

CHAPTER 1: INTRODUCTION TO PHYSICS
1.1 Understanding Physics
Physics: drive of all natural phenomenon Physics is a branch of acquirement centred on the study of matter, energy, and the connection between them.

1.2

sensual Quantities

1.2.1 Quantities and Units
Physical quantities quantities that can be measured Basic quantities quantities that cannot be defined in any other miscellany of physical quantities Derived quantities confederacy of basic quantities via multiplication of division Units SI Units standard surface for comparison internationally accepted units (determined in Paris in a meeting in 1960) Le Systemé foreign dUnites

The five basic quantities: Quantity 1. Length 2. cumulus 3. Time 4. Temperature 5. Electric current

Symbol l m t T I

SI Units meter kilogram second potassium ampere

Units (Symbol) m kg s K A

1.2.2 Scientific annotating (Standard Form)
A × 10n where A ? 1 < 10 and n = whole number The value of A should always be rounded to 3 or 4 significant numbers.

Chapter 1: Introduction to Physics

rascal 1 of 6

Hoo Sze Yen

Physics SPM 2008

1.2.

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3 Prefixes
Prefix Value Standard form 10n where n is Symbol Tera 1 000 000 000 000 1012 12 T 9 Giga 1 000 000 000 10 9 G Mega 1 000 000 106 6 M Kilo 1 000 103 3 k Hecto hundred 102 2 h Deca 10 101 1 da Deci 0.1 10-1 -1 d -2 Centi 0.01 10 -2 c Milli 0.001 10-3 -3 m Micro 0.000 001 10-6 -6 ? Nano 0.000 000 001 10-9 -9 n -12 Pico 0.000 000 000 001 10 -12 p

1.3

Scalar and Vector Quantities
Scalar Quantities Vector Quantities Quantities with magnitude only Quantities with magnitude and direction EXAMPLES outer space Displacement stimulate Velocity

Example: Distance vs Displacement
Kangar

138 km 507 km Butterworth 369 km

Fauziah travelled from Kuala Lumpur to Kangar, a outdo of 507 km. After that she continued her journey to Butterworth, a distance of 138 km. From Butterworth, Fauziah then travelled back to Kuala Lumpur, a distance of 369 km. Distance is the TOTAL DISTANCE TRAVELLED...If you want to get a dear essay, order it on our website: Orderessay



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