Amoon rock collected by a u. s. apollo mission is estimated to be 3.60 billion years old by uranium/lead dating. assuming that the rock did not contain any lead when it was formed, what is the current mass of pb206 in the rock, if it currently contains 1.565 g of u238 ? the half-life of u238 is 4.47×109 years .
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Physics, 22.06.2019 04:50
The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.
Answers: 2
Physics, 22.06.2019 16:00
What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass
Answers: 1
Amoon rock collected by a u. s. apollo mission is estimated to be 3.60 billion years old by uranium/...
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