A Helium Nucleus (also known as an alpha particle) is placed on the positive plate of a parallel plate capacitor as shown in the drawing. It is initially at rest. The Helium Nucleus then moves toward the negative plate. The potential difference across the capacitor is 350 volts. The distance between the plates is d = 0.017 m. (Ienore gravitational effects in this problem.} a. Write down the statement of energy conservation for this problem. Show all steps. b. What is the speed of the Helium Nucleus when it reaches the negative plate? c. What is the magnitude of the electric field across the plate (before the Helium Nucleus is introduced)?

A Helium Nucleus (also known as an alpha particle) is placed on the positive plate of a parallel plate capacitor as shown in the drawing. It is initially at rest. The Helium Nucleus then moves toward the negative plate. The potential difference across the capacitor is 350 volts. The distance between the plates is d = 0.017 m. (Ienore gravitational effects in this problem.} a. Write down the statement of energy conservation for this problem. Show all steps. b. What is the speed of the Helium Nucleus when it reaches the negative plate? c. What is the magnitude of the electric field across the plate (before the Helium Nucleus is introduced)?