An infinite plane of charge has surface charge density 4.7 mu or micro cc/m2. how far apart are the equipotential surfaces whose potentials differ by 100 v?

What is the final velocity of the initial velocity of 25 and -50?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

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