3 An object is being held against a wall, initially at rest. The coefficient of friction is 06. The
object has a mass of 2 kg and you are holding it with a force of 30N against the wall. How long
will the object take to slide down 1m (vi On/s)? (6)

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .

What causes the formation of ocean currents?