A 142 cm tall person stands
250 cm from a camera, which has
a 15.0 cm focal length lens. How
big is the image of the person on
the film?
(Mind your minus signs.)
(Unit = cm)

Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral