Questions about a force acting on a charged particle in a magnetic field: 1. What condition must be required for a magnetic field to exert a force on a charged particle? 2. What is the unit of measurement in the Lorentz force law? 3. Describe the relationship expressed by the equation F = qvBsinθ. 4. What physical phenomenon and factors are involved in this experiment? 5. Is the magnetic force dependent upon any specific factors?