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physics

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An electron is moving through a magnetic field whose magnitude is 8.70*10^-4 T. The electron experiences only a magnetic force and has an acceleration of magnitude 3.50*10^14 m/s^2. At a certain instant, it has a speed of 6.80*10^6m/s. Determine the angle (less than 90degrees) between the electron's velocity and the magnetic field.

Can anyone please give me some ideas to do it? THANKS!

  • physics -

    If you know acceleration, you know Force: F=ma. Knowing force, look at the magnetic force equation (sinThetaBqv?) and solve for velocity

  • physics -

    chup

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