a stone is projected vertically upwards with a velocity of 20m/s two seconds later a second stone was similarly projected with the same velocity, when the two stones meet the second one is rising at a velocity of 10m/s , what is the length of time the second stone is in motion ,also find the velocity of the first stone when they meet​

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?