Damage from a factory storage tank results in chloroform running into a lake via a storm drain. a) What is the piston velocity of chloroform given that the piston velocity of propane measured at the lake is 3 x 10-3 cm/sec

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.