On its highest setting, a heating element on an electric stove is associated to an ac voltage of 240 V. This element has a resistance of 29 ohm. (a) Discover the power dissipated in the element. (b) Assuming that three-fourths of the heat produced with the element is used to heat a pot of water (the rest being wasted), discover the time required to bring 1.9kg (half a gallon) of water at 1.5 C to boil.