Question: Planck time. The smallest time interval defined in physics is the Planck time tp = 5.39 x 10-44 s, which is the time required

Planck time. The smallest time interval defined in physics is the Planck time tp = 5.39 x 10-44 s, which is the time required for light to travel across a certain length in a vacuum. The universe began with the big bang 13.772 billion years ago. What is the number of Planck times since that beginning?

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