Sam is comparing the half life of two isotopes of uranium. The half life of uranium-238 is 4.5x10^9 years. The half life of uranium-233 is 1.6x10^5 years. He computed how much greater the half life of uranium-238, and his calculator displayed the number 2.81E4. What is this number in scientific notation
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The number 2.81E4 in scientific notation is 2.81 × 10^4.
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