A bullet of mass 10g travel horizontally at 300m/s, strikes a wooden block of mass 290g which is at rest but free to move on the floor. After the impact the block and the bullet collides and move together and come to rest after travelling 15m on the floor. Find the coefficient of static friction​

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?