6-8. please help

Use the following information to answer the next three questions In a Millikan-like oil-drop experiment, a charged drop is suspended in the region between two horizontal parallel plates that are 2.00 cm apart. The electric field between the parallel plates is 1.76 x 101 N/C, toward the top plate. The mass of the oil drop is 8.61 x 10-10 kg. 6. The electric potential difference between the parallel plates is 8.80 x 102 V () 8.80 x 101 V () 3.52 x 102 V () 3.52 x 101 V 7. The type and magnitude of the charge present on the oil drop is () 1.60 x 10-19 c (]-1.60 x 10-19 0 () -4.80 x 10-19 C () +4.80 x 10-19 C Use the following additional information to answer the next question The same oil drop from the previous two questions is irradiated with high energy X- rays. The charge on the drop changes and the drop accelerates upwards. 8. If the magnitude of the new charge is 8c. then the drop's net upward acceleration is