Question 4 (1 point) You drop 270 g of ice at -15.0 C into 1.60 kg of water at 20.0 C. What is the final temperature of the system once it reaches equilibrium? NB. Cwater = 4190 J/kg.K , Cice = 2100 J/kg.K, Lf = 3.33 x 10' J/kg. 7.37 . C 4.55 .C 2.42 . C O 10.2 .CA heating element made from tungsten (a = 0.0045 .C-1) is initially at 20.0 C and is connected to a power supply (with negligible internal resistance). When the heating element reaches 65.0 C, it consumes electrical energy at a rate of 660 W. What would be its power consumption when its temperature reaches 120 C? 547 W O 288 W 388 W 393 W