How much energy is needed to raise the temperature of 2.3 kg of aluminum from 5 °C to 15 °C? The specific heat capacity of aluminum is 897 J/kg°C. 20.631)
-20.631
39.78
39.783

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.