hello i need help and show work please

Assume the region to the right of a certain vertical plane contains a vertical magnetic field of magnitude 4.06x10-4T XXXXXXXX and the field is zero in the region to the left of the plane. An XXXXXXXX XXXXXXXX electron, originally traveling perpendicular to the boundary XXXXXXXX plane, passes into the region of the field. Assuming the XXXXXXXX XXXXXXXX maximum depth of penetration into the field is 2.32cm. Noting XXXXXXXX that its path is a semicircle. Determine the time interval required XXXXXXXX for the electron to leave the "field-filled" region (unit in ns).Assume the region to the right of a certain vertical plane contains a vertical magnetic field of magnitude 5.78 x10-4T XXXXXXXX and the field is zero in the region to the left of the plane. An XXXXXXXX XXXXXXXX electron, originally traveling perpendicular to the boundary XXXXXXXX plane, passes into the region of the field. Assuming the XXXXXXXX XXXXXXXX maximum depth of penetration into the field is 2.69cm. XXXXXXXX Noting that its path is a semicircle. Find the speed of the XXXXXXXX electron (unit in x10' m/s).Assume the region to the right of a certain vertical plane contains a vertical magnetic field of magnitude 2.00x 10-T X XXXXXXX X * XXX: XXX and the field is zero in the region to the left of the plane. An XXXXXXXX electron, originally traveling perpendicular to the boundary XXXXXXXX plane, passes into the region of the field. Assuming the XXXXXXXX XXXXXXXX maximum depth of penetration into the field is 4.25cm. XXXXXXXX Noting that its path is a semicircle. What is the bending XXXXXXXX direction when the electron enter the magnetic field region? O upward O downward O out of the page O into the page O moving straight