A celestial object called a pulsar emits its light in short, Ask an Expert

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A celestial object called a pulsar emits its light in short bursts that are synchronized withits rotation. A pulsar in the Crab Nebula is rotating at a rate of 30 revolutions/second. What is the maximum radius of the pulsar, if no part of its surface can move faster than the speed of light (3x 108 m/s)?

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