Physics, 14.02.2021 22:10 rhettperkins
Question 1 (1 point)
The half-life of Uranium 238 is 4.6 billion years and the age of earth is 4.6 billion years. What percentage of uranium-238 that was present when
Earth was formed still remains?
O a
25%
Ob
75%
100%
d
50%
Answers: 3
Physics, 21.06.2019 21:30, alexandraparava
In what direction does the medium move relative to the direction of the wave? explain.
Answers: 3
Physics, 22.06.2019 05:30, GreenHerbz206
Could someone . i have tried to solve myself but my calculation is off
Answers: 3
Physics, 22.06.2019 21:00, estebencampos69
Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.
Answers: 1
Question 1 (1 point)
The half-life of Uranium 238 is 4.6 billion years and the age of earth is 4.6...
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