A2000 kg car is driving on a flat road around a turn with a 50 meter radius of curvature. when the road is dry, the car can go around the turn at a maximum speed of 20 m/s without slipping. what is the coefficient of friction between the road and the tires? is this the coefficient for static or kinetic friction?

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