Daytona 500 is NASCAR's (The National Association for Stock Car Auto Racing) main event. It takes place at Daytona International Speedway in Daytona, Florida. The laps on this track
oval have a maximum radius (at the top) of r = 316 m and are abruptly banked, with
31 degrees. Suppose these maximum radius turns were frictionless. How fast do the cars have
what to travel around this?

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