1. Dinosaur fossils are too old to be reliably dated using carbon-14, which has a half-life...

1. Dinosaur fossils are too old to be reliably dated using carbon-14, which has a half-life of about 5730 years. Suppose we had a 68 million year old dinosaur fossil. How much of the living dinosaur's ¹⁴C would be remaining today? (Round your answer to five decimal places.)
______ %

Suppose the minimum detectable amount is 0.3%. What is the maximum age of a fossil that we could date using ¹⁴C? (Round your answer to the nearest integer.)
______ yr

2. A roast turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F. (Round your answers to the nearest whole number.)

(a) If the temperature of the turkey is 150°F after half an hour, what is the temperature after 60 minutes?
T(60) = ____ °F

(b) When will the turkey have cooled to 100°?
t = _____ min

3. Use the Laws of Logarithms to combine the expression.

ln(10) + 3 ln(x) + 3 ln(x² + 10)

________

Expert Solution

milcah answered 2 years ago

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