Consider the circuit below. Assume the switch has been in its initial position for a long time, and it switches position as indicated at t = 0. a. Find v(t) for all t > 0.
b. Sketch v(t) as voltage vs. time; annotate critical values on your sketch (see video lectures for example).
c. How much energy is stored in the capacitor at t = 0?

Apinion having 30 involute teeth of 6,5 module rotates at 220 r/min and transmits 2 kw to a gear wheel having 70 teeth; the addendum on both wheels is 4 of the circular pitch and the angle of obliquity is 200. determine; 3.1 the lengths of the path of approach and the arc of approach 3.2 the normal force between the teeth at an instant when there is only one pair of teeth in contact