Oppositely charged parallel plates are separated by 4.67 mm. a potential difference of 600 v exists between the plates. (a) what is the magnitude of the electric field between the plates? n/c (b) what is the magnitude of the force on an electron between the plates? n (c) how much work must be done on the electron to move it to the negative plate if it is initially positioned 2.00 mm from the positive j

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm