What is the angular momentum of a 0.200 kg ball rotating on the end of a thin string in a circle of radius 1.40 m at an angular speed of 11.0 rad/s

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.