The age of the Earth is approximately 1.3 X 10^17 seconds, and one year is approximately 3.2X10^7 seconds. Which of the following is closest to the age of the eath in years?
4.1X10^9
3
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- papgust
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Earth's age = (1.3 * 10^17) OR (13 * 10^16) OR (13 * 10^(9+7)) OR (13 * 10^9 * 10^7)
A year = 3.2 * 10^7
Earth's age/year = (13 * 10^9 * 10^7) / 3.2 * 10^7 = (13 * 10^9) / 3.2 = 4.1 * 10^9
A year = 3.2 * 10^7
Earth's age/year = (13 * 10^9 * 10^7) / 3.2 * 10^7 = (13 * 10^9) / 3.2 = 4.1 * 10^9
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Thank you papgustpapgust wrote:Earth's age = (1.3 * 10^17) OR (13 * 10^16) OR (13 * 10^(9+7)) OR (13 * 10^9 * 10^7)
A year = 3.2 * 10^7
Earth's age/year = (13 * 10^9 * 10^7) / 3.2 * 10^7 = (13 * 10^9) / 3.2 = 4.1 * 10^9