6. The graph below (not to scale) shows the temperature T of 0.2 kg of a substance X when heated using a heater that uniformly supplies 25 J of heat energy every second. Heating/Cooling Curve of Substance X TO) 80 20 + A 5 10 15 20 25 30 Time (s) How many joules of heat energy are supplied to x in section DE?​
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6. The graph below (not to scale) shows the temperature T of 0.2 kg of a substance X when heated usi...
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