Physics, 06.05.2021 04:00 zmirandalove100
Each time you dumped the pennies, one half-life passed; it has been shown that the half-life for this radioactive isotope is 20 years. In the year 2000, an archaeology team unearths pottery and is using this isotope for radiometric dating to place the age of the pottery. It is shown that 95% of the nuclei have decayed. Using your graph, approximately how long ago was the pottery made?
Answers: 1
Physics, 22.06.2019 08:30
What object a collides with object b and bounces back its final momentum is?
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Physics, 22.06.2019 12:30
Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j
Answers: 3
Physics, 22.06.2019 17:30
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Each time you dumped the pennies, one half-life passed; it has been shown that the half-life for thi...
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