SUN

The sun is the center of the solar system. The sun is the largest object in solar system. It is diameter ia approximately 1,4 million kilometer it consists of hydrogent and helium. The sun is 333.000 times as massive as t

workshop

physics lessons for elementary schools, middle schools, high schools

Global Warming

Some plants are often grown in a glasshouse (greenhouse)What is advantage of a greehouse ?

extreme weather in Indonesia

frequent extreme weather in Indonesia, according to climatology meteorology and geophysics, extreme weather

greetings in Happy New Year 2012

Fisika Education : Teaching materials, practice questions and articles Physics for elementary, junior high school, vocational school

Sunday, October 30, 2011

Kinematics

Particle’s Motion Kinematics
(Part 1)

Position, Displacement, and Distance
a. Position


Position is the location of particle relative to a frame of reference and expressed by te vector quantity r.

To exprexx directioan in a Cartesian coordinate, we us a unit vector perpendikular to each other.

Unit vector i ( in x direction), and
Unit vector j (in y direction)

If the particle or object is at point (x, y), then its position is expressed as:   r = xi + yj

b. Displacement


Displacement is the change in position of particle expressed as a vector quantity ∆r.
If r0 is the initial position and rt is the final position, then the displacement can be written mathematically as

ro + ∆r = rt
∆r = rt – ro
or
∆r = ∆xi + ∆yj 

c.      Distance 


Distance is the magnitude of displacement traveled 
by a particle as scalar quantity I ∆r I or ∆r.
Distance can be written matematically using Pythagoras’ theorem

Complete file Kinematics 
for High School

Sunday, October 2, 2011

Usaha Kalor dan Energi Dalam

Fisika  Usaha Kalor dan Energi untuk sma dan smk
Termodinamika 
       Sejak ditemukanya mesin uap oleh James Watt (1736-1819) sebagian besar tranportasi air yang menggunakan kapal layar digantikan oleh kapal uap. Mesin kapal uap ini memiliki prinsip fisika yang sama dengan mesin uap yaitu mengubah energi panas dari bahan bakar menjadi energi gerak. Bagaimanakah proses perubahan energi panaS menjadi energi gerak ini terjadi ? Untuk memahami dengan baik proses tersebut kita memerlukan pemahaman, tentang termodinamika.


Semoga bermanfaat, selamat belajar fisika SMA dan SMK.
Download file TEMODINAMIKA  
Physics education High School

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