a mass of rocket is 102 kg is fired into the Earth surface so that it's just escape the influent of the Earth. calculate the velocity of which it escape where g=6.67*10^-11,R=6.4*10^6and mass of the Earth is 6.0 * 10^24​

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?