Me how do activities that decrease air pollution, soil toxins, and resource use affect a person's ecological footprint? a. they increase it. b. they convert it to hectares. c. they convert it to acres. d. they decrease it.

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.