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Created with Fabric.js 1.4.5 environmental introduction unique features - Perspex : Light weight car body hold the iodine clock and battery container to avoid spillage- Wide car base : avoid spillage increase car stability- tyres 5cm diameter, 2cm thick : stable movement avoid car basement touching the ground- Wet Sponge : absorb hydrogen gas released- battery with with lid : avoid leakage - 150˚ triangle shaped bumper : allow golf ball move in slant direction - Circuit diagram- Car weight : - Powered by electrolysis- Iodine clock as stopping mechanism economy aspects Economy aspects : all budgets- Motor powered toy Car RM65.90- Photoresistor RM17.90- 9V batteries RM10- Magnesium strips RM44.60 Environmental & safety features(power & stopping systems) The excess I3- forms a complex solution with starch. After a short time delay, the liquid slowly turns to a shade of dark blue.The photoresistor is unable to detect light, resistance in the circuit increased, triggering the relay to open the motor circuit and thus the car stops. H2O2 (aq) + 3I (aq) + 2H+ (aq) I3 (aq) + 2H2O (l) (slow) I3 (aq) + 2 S2O32 (aq) 3 I (aq) + S4O62 (aq) (fast) iodine clock - Electrolysis using magnesium and coppers strips (constant length) with sulfuric acid as electrolyte Mg(s) Mg2+(aq) + 2e Cu2+(aq) + 2e Cu(s) Mg(s) + Cu2+(aq) Mg2+(aq) + Cu(s)- Parallel circuit : 6 cells- Voltage generated : 2.71V per cell- total voltage : 16.26V Mg & Cu testing results i-ON TENG FOO LIMFUNG YUN RUTRACY LAU FANG TINGPUA HONG LONG
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