SELAMAT DATANG KE MUNSHI i-PHYSICS."Your Physics Garage"...ENJOY Yourself.

17.10.09

BAB 1



KUANTITI FIZIK

PENGENALAN.

Fizik ialah asas Sains yang berkaitan dengan kajian atau pemahaman tentang fenomena semulajadi yang berlaku didalam alam ini. Kajian dalam bidang fizik banyak melibatkan pengukuran kuantiti-kuantiti fizikal. Kuantiti fizik yang diukur boleh dikategorikan kepada dua jenis: kuantiti asas dan kuantiti terbitan.

1.1 KUANTITI DAN UNIT ASAS(FUNDAMENTAL QUANTITIES AND UNITS).

Kuantiiti asas ialah kuantiti fizik yang paling kecil yang tidak boleh dihuraikan. Ada tiga kuantiti asas dalam mekanik:
i. jisim(mass)
ii. panjang(length)
iii. masa(time)

Ada empat lagi kuantiti asas untuk kajian fizik yang melibatkan Elektrik, Haba dan Jirim:
i. Arus elektrik(elektric currents)
ii. Jumlah bahan
iii. Suhu(temperature)
iv. Keamatan cahaya(light intensities)

Walaubagaimanapun, dalam tahun 1960, satu jawatankuasa antarabangsa bersetuju menetapkan satu unit piawai antarabangsa yang dipanggil ‘Sistem Antarabangsa’ atau “Systeme International’ (S.I.) yang diolah mengikut system metrik berdasarkan kepada lima kuantiti asas : panjang, jisim, masa, arus elektrik dan suhu.

Setiap kuantiti yang diukur mesti mempunyai nombor dan unit. Sesuatu nombor tanpa unit tidak akan memberi banyak makna. Lima unit asas adalah meter, kilogram, saat, Ampere dan Kelvin. Sukatan fizikal akan menggunakan satu atau lebih daripada unit-unit dalam berbagai gabungan.

Satu kilogram ditakrifkan sebagai jisim suatu silinder aloi platinium-iridium yang disimpan di Biro Berat dan Sukatan Antarabangsa di Sevres, France. Satu saat ialah masa yang diperlukan untuk atom cesium-133 membuat 9 192 631 770 getaran. Satu meter ialah jarak yang dilalui oleh cahaya dalam vakum selama saat.

Ada unit piawai yang lain yang juga boleh digunakan selain daripada unit S.I seperti Unit British. Sistem Unit British ini menggunakan pound (lb) sebagai daya. Ia ditakrifkan sebagai daya yang dikenakan oleh tarikan graviti bumi ke atas satu jisim 0.45359237 kg atas permukaan bumi. Panjang pula diukur dengan unit ela( yard) dimana

1 ela = 0.91440183
1 ela = 12 kaki (feet)
= 144 inci (inches)
dan 1 inci = 2.54 cm
1 Introduction to Physics
2 Force and Motion

3. Force and Pressure
4. Heat

5. Light
Form 5
2. Electricity
2.7 Efficiency Use of Electrical Appliances
3. Electromagnetism
4. Eelctronic (will be uploaded soon)
5. Radioactivity (will be uploaded soon)

No comments:

Post a Comment

IKLAN JAP....

NOBODY

Articles - Information Technology

3G + WIFI
7 Key Benefits of ClickView Digital Video Library System
8 E-commerce Benefits to Merchants
9 Benefits of Multi-Media Learning Technology
9 Ways to Combat Credit Card Frauds
10 Things You Need to Start Selling Online
Advertisement Online
Are mobile phone radiation dangerous...or not? what's the verdict?
Are websites here to make money? or an extension of your identity?
ATM Fraud, hi-tech or low-tec?
A Useful Introduction to Documentary, Rare & Vintage DVD Online
Boost your traffic on Google.
Broadband in GAS (BiG) Dreams or reality?
Cleaning your harddrive - Erasing sensitive information
Clickview Digital Library
Client/server computing and Middleware
Computer Viruses
Contribution of CASE Tools to the System Development
Database Authorization and User Security Administration
E-Learning
Education Unites with Technology
Effective Web Design
EVOLUSI KOMPUTER
excel- tips
File Server from Gmail anyone?
Getting To Know About Flash MX 2004
Guide to choosing a right design firm
How to adopt MS Access and MySQL databases to drive your database applications.
How to introduce open source systems to co-exist with Windows environment in small and medium sized industries (SMI).
How To Promote Your Website
How To Recover/Repair the Windows Control Panel (*.cpl)
How to utilise open source MySQL database server in your ERP system
Implement a Training Solution That Works For Your Organization

increase ADSL speed
Internet Banking
Introduction to ASP.NET
Know About WAP Technology
links...to buy..or not to buy? does "hits" matter?
Market Expectations on 3G HSPDA
Microsoft word Tips
Mobile broadband, a clash of the Titans?
Mobile Entertainment, the best platform?
Mobile Networks, Gadgets, Security, is it what we're waiting for?
Mobile phone radiation more harmful to rural area folks?
Multimedia Advantage
My Love-Hate Relationship in Internet Marketing
MySoftwareHouse.com BizSuite
NitroMindSet Program
Progressive Organizations & Institutions Deserve Progressive Training
Protect your computer at home and work
Regulations to Optimize Bank Security
Search engine positioning
Security & Integrity
SEJARAH KOMPUTER: CHARLES BABBAGE, BAPA KOMPUTER
Sistem Komputer
Speed up the 56k dialup modem / Internet connection
Submit Your Website the Free & Easy Way
The Leading Edge Information Technology White Elephants
Use Web Standards
Viral Marketing
WangTool.com Personal Finance Website
Website Basics
Website Design - Usability
Website Promotion > Link Popularity
Why Do I Need A Website
Why WebSite Hits Does Not Always Equal To More Sales!
WIFI? 3G? or WIMAX? part 1
WIFI? 3G? or WIMAX? part 2
Will Mobile handsets kill off MP3 players?