a jet engine generate 160kn force as it propels a 20000kg plane down a run away if 140kn of friction opposes the motion of aplane how much time take for the plane to reach a speed 33m/s from rest ?​

Adielectric-filled parallel-plate capacitor has plate area a = 30.0 cm2 , plate separation d = 9.00 mm and dielectric constant k = 3.00. the capacitor is connected to a battery that creates a constant voltage v = 15.0 v . throughout the problem, use ϵ0 = 8.85x10-12 c2/n.m2 . find the energy u1 of the dielectric-filled capacitor.