Match the following phrases with their purpose (some may be used more than once, and some may not be used): lubrication avoid contact of dis-similar metals provide material stiffness minimize surface contact, such as in vibrating surfaces a. design against corrosion b. design against temperature effects c. design against fatigue d. increase resonant frequency to a value above the use band e. design against wear

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?