A man on a skateboard carrying a dictionary is initially at rest. He heaves the dictionary forward with a speed of 0.97 m/s and he recoils backward with a speed of 0.04 m/s. if the dictionary's mass is 3.24kg what is the mass of the man? ( will be reported if you answer just for points )

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?