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**1. Starting from a speed of 0 m/s, a proton is accelerated through a potential difference of 32000 V. What is the proton's velocity?**

**2. Is there a formula that I should use to solve for this problem?**

**3. Initial Velocity = 0 m/s? What is potential difference?**

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**1. The energy of a proton moving through a magnetic field of intensity 0.20 T is 4.4x10^-15 J. What is the radius of the proton's path if it moves in a direction that is always perpendicular to the field?**

**2. I think that I have to use Bqv = (mv^2)/r to solve for r?**

**3. B = 0.20 T. I don't know what the 4.4x10^-15 J designates.**