Gwhat is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields. e⃗ and b⃗ are also perpendicular to each other and have magnitudes 3700 v/m and 3.5×10−3 t , respectively.

If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be a. lower than the mercury in the vessel, and shaped like the inside of a bowl. b. higher than the mercury in the vessel, and shaped like the inside of a bowl. c. lower than the mercury in the vessel, and shaped like the outside of an umbrella. d. higher than the mercury in the vessel, and shaped like the outside of an umbrella.