Aladder 16 m. long rests against a frictionless wall and makes a angle of 60° with the horizontal. a 180 n. man is on the ladder, m t the top. what horizontal force is needed at the bottom of the ladder in on to prevent. the ladder from slipping? neglect the weight of the ladder.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?