Two masses 5 and 7 kg are originally at rest on a frictionless surface. the masses are connected by a light cord. a second cord is attached to the 7 kg mass and pulled with a horizontal force of 30 n such that the masses accelerate in a single direction. what is the tension in the cord that connects the two masses?

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?