for a given metallic surface, a graph of frequency of the incident radiation against the stopping potential is plotted. if the shape of the graph us 2.3×10^14CJ^-1S^-1. Determine the value of the Planck's constant.​

Research and discuss the aurora borealis in terms of electric charges, magnetic fields, and forces. which times of the year are best for seeing the northern lights, and where are the best places to view them? explain your answers. also identify links to good images. if you’ve ever seen the aurora borealis, describe your experience and note the time and place that you saw it.