Question 9 (1 point) What speed must a proton maintain if it is to remain suspended, relative to the Earth's surface, as it travels at the equator, parallel to the Earth's surface and perpendicularly through Earth's magnetic field of 50 HT. The speed of the proton expressed in scientific notation, is a.b x 10"m/s. Write the values of a, b, and c without units, spaces or commas