Sam is comparing the half-life of two isotopes of uranium. The half-life of Uranium-238 is 4.5×10^9 years. The half-life of Uranium-233 is 1.6×10^5 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)

Answer 1

The number 2.81E4 is already in scientific notation. It represents \( 2.81 \times 10^4 \).

If you want to express it in a different format, it equates to 28,100 when written in standard number form. However, as requested, the scientific notation for 2.81E4 is:

\( 2.81 \times 10^4 \)