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Sam is comparing the half-life of two isotopes of uranium. The half-life of Uranium-238 is 4.5×109 years. The half-life of Uranium-233 is 1.6×105 years. He computed how much greater the half-life of Uranium-238 is than that of Uranium-233, and his calculator displayed the number 2.81E4. What is this number in scientific notation?(1 point)
Responses
4×102.81
4 times 10 superscript 2.81 baseline
2.81+104
2.81 plus 10 superscript 4 baseline
2.81×104
2.81 times 10 superscript 4 baseline
2.81×10−4
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Step-by-Step Bot
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The number 2.81E4 in scientific notation is 2.81 x 10^4.
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