Why can many ecosystems exit in one biome?

An observer that stands still as the electron moves by him, will observe

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.