Question 19 [1 point) Is it possible to have a zero electric field for a negative and positive charge along the line joining the two charges? 0 Yes, if the two charges are equal in magnitude. 0 Yes, if the two charges are not equal in magnitude. 0 No, a zero electric field cannot exist between the two charges. 0 cannot be determined without knowing the separation between the two charges Question 20 [1 point) A charged particle moves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves 0 straight upward. 0 straight downward. O in a plane parallel to the Earth's surface. 0 upward at an angle of 45\" above the horizontal. Question 21 [1 point) SatelliteA has twice the mass of satellite B, and rotates in the same orbit. Select all the correct statements. C] SatelliteAand B have the same speed C] SatelliteA has a greater speed than B C] Satellite A has greater centripetal acceleration than B [3 Satellite A has twice the gravitational force of B