One of the moving parts of an engine contains 1.6 kg of aluminum (c = 900 J/(kg . C')) and 0.3 kg of iron (c = 452 J/(kg. C°)) and is designed to operate at 210°C. How much heat is
required to raise its temperature from 20°C to 210°C?

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?