Assume 10,000 electrons were transferred from your hair to the balloon. a. What is the charge in Coulombs on the balloon? b. What is the charge in Coulombs on your hair? c. Calculate the amount of electric force if the balloon is held 1 centimeter from your hair, while both are charged.

What is the speed of an object at a given moment?

When using the scientist method, which step comes last?

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