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blue_soda025
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1. A charged particle was accelerated from rest by a potential difference of 2.50 x 10^5 V. If the particle reached a maximum speed of 2.90 x 10^4 m/s, what potential difference would be required to accelerate this particle from rest to a velocity of 7.25 x 10^4 m/s?
2. The centers of two alpha particles are held 2.5 x 10^-12 m apart, then they are released. Calculate the speed of each alpha particle when they are 0.75 m apart.
For the second one, my teacher kind of went over it and came up with:
[tex]v = \sqrt{\frac{\frac{kq_{1}q_{2}}{r_{1}} - \frac{kq_{1}q_{2}}{r_{2}}}{m}}[/tex] (didn't want to show all the steps)
However, when I plug in the numbers, it doesn't match the answer which should be 2.4 x 10^5 m/s.
2. The centers of two alpha particles are held 2.5 x 10^-12 m apart, then they are released. Calculate the speed of each alpha particle when they are 0.75 m apart.
For the second one, my teacher kind of went over it and came up with:
[tex]v = \sqrt{\frac{\frac{kq_{1}q_{2}}{r_{1}} - \frac{kq_{1}q_{2}}{r_{2}}}{m}}[/tex] (didn't want to show all the steps)
However, when I plug in the numbers, it doesn't match the answer which should be 2.4 x 10^5 m/s.
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