### Find the required angular speed

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Q. Find the required angular speed, w, of an ultracentrifuge for the radial acceleration of a point 1.20 from the axis to equal 5×10^5 g (where is the acceleration due to gravity).

Q. An alpha particle and beta^ {-} particle, each with kinetic energy 35 {rm keV}, are sent through a 1.10 {rm T} magnetic field. The particles move perpendicular to the field. Find the curvature radius for alpha particle's trajectory. Hint: The kinetic energy is small sufficient to neglect relativity.

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