Can you explain please?

Activity: Motion in a Magnetic Field Grade NAME (print) (sign) A positively charged particle moving to the right enters a region with a constant magnetic field pointing into the page as shown. Look up any conversion factors you need. All numbers must be entered with units. a) Show the magnetic force on the particle. Sketch the subsequent motion of the charged particle in the magnetic field. Assume the gyroradius is about a third the length of one side of the region shown. XXXXXXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXXXXX b) If the particle is an a particle (a helium nucleus) with a charge of +2e and a mass of 4.0026 u with a velocity of 3.50 x 10' m/s enters are region with a magnetic field of 25 mT, XXXXXXXXXXXXX find the gyroradius. XXXXXXXXXXXXX c) If the particle had a larger mass with the same charge, would the radius be i) larger i) smaller iii) the same. If it had a larger charge with the same mass, the radius would be i) larger ii) smaller iii ) the same. If both the mass and charge were doubled, the radius of motion would be i) twice ii) half iii) the same. Additional task: d) Find the gyrofrequency (or cyclotron frequency) in Hertz for this situation