Hi Tutor, please help me with the questions #26-30. Thank you

An ion enters a mass spectrometer with an initial speed of 5.000x 10" m/s. The ion carries a charge having absolute value q = 1.602x10 C, and the initial velocity of the ion is parallel to the plane of the page, as shown in the figure. Within the mass spectrometer, the uniform magnetic field has a magnitude of 0.4000 T and it is directed out of the page (at right angles to the page). On a photographic plate, the ion leaves a mark at a distance of 34.440 cm from the entrance slit, as shown in the figure below. O O B uniform O O O 34.440 cm Photographic plate 26. The charge of the ion A. is positive. B. is negative. C. is impossible to determine from the given information. 27. The mass of the ion is equal to A. 2.207 x 10-25 kg. B. 4.414 x 10-25 kg c. 4.414 x 10-24 kg . D. 2.207 x 10-2 kg E. 4.414 x10-2 kg . You have been asked to design a velocity selector which permits the passage (undeflected) of negatively charged particles which enter the velocity selector from the left side at speeds of 4.00 x 10" m/s, as shown in the figure. You are provided with a pair of oppositely charged metal plates, as shown in the figure. The approximately uniform electric field between the charged plates has a magnitude of 8.00 x 10* N/C. + +++++++++++ +x 28. The direction of the required magnetic field is A. the negative y direction. B. the negative x direction. C. out of the page. D. into the page. E. the positive y direction. 29. Find the magnitude of the required uniform magnetic field in the region between the plates. A. 2.00 mT. B. 0.500 mT. C. 32.0 microT. D. 0.500 T. E. 2.00 T. 30. True or False: Positively charged particles which enter this velocity selector from the left at a speed of 20000 m/s will be deflected upwards off the mid-line? A. TRUE. B. FALSE