Acosmic ray electron moves at 6.5 x 106 m/s perpendicular to the earth’s magnetic field at an altitude where field strength is 1.24 10-5 t. what is the radius (in meters) of the circular path the electron follows? the charge of an electron is 1.6 x 10-19 c and its mass is 9.11 x 10-31m. your answer should be a number with two decimal places, do not include the unit.

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.