(a) A positron has 1500 eV of kinetic energy. Calculate its speed in meters per second. (b) Suppose a constant magnetic field of 150 mT points straight down into this page and perpendicular to it. Calculate the magnetic force exerted on the positron as it moves in the plane of this page. (c) Calculate the radius of the positron's path in the constant magnetic field. Make a sketch showing its orbital direction.
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