12. A conducting 41.0 cm long rod makes contact with two metal rails which are fixed. There is a uniform magnetic field of 14.0 T that is directed out of the page as shown in the figure. What is the magnitude of the induced emf and the
direction of the induced current when the rod is moving at a speed of 3.15 m/s?

This is the substance(s) formed in a chemical reaction.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s. what is the wavelength?

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