A machine at a post office sends packages out a chute and down a ramp to be loaded into delivery vehicles. Find the angle of the slope down which this box could move at a constant velocity assuming the coefficient of friction for a parcel on waxed wood is 0.100. You can neglect air resistance

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?