1. You were studying very hard last night and felt hungry. You found frozen mashed potatoes Epotato = (65 j25), and frozen cooked carrots Ecarrot = (75 j25), in the refrigerator and wanted to heat using the microwave oven, which operates at 2.5 GHz. (15 points) a) Find the skin-depth a of the microwave into the mashed potato and cooked carrots, respectively. b) What is the attenuation ratio of the electric field at 1 cm depth from the food's surface? c) Which food is more effective for heating with the microwave oven (i.e., heat up faster)? (assume that we consider electromagnetic field absorption portion only)