A car of mass 1000kg has a velocity of 10ms-1 east collides at a crossroads with a car of mass 800kg which has a velocity of of 5ms-1 north. If the cars lock together after collision, calculate their velocity immediately after the collision. How much kinetic energy is converted to other forms in the collision? Calculate total kinetic energy before and after.​

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c