http://www.one-school.net/notes/physics/SPM-Physics-Formula-List-Form5.pdf
byk formula physics...dlm ni...
Friday, 3 February 2012
Wednesday, 1 February 2012
Resonance
The making of a Barton's Pendulum
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| this is fun.... |
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| the boys trying hard to make it right... |
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| our barton's pendulum is ready for action! |
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