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Here is the question which I am struggling on, please help me!
Question: The uranium isotopes 235U and 238U were present in roughly equal amounts when the solar system was formed. Today only 0.72% is the lighter isotope, with the remainder U-238.
1- Use these data and half-lives from table to estimate the age of the solar system.
Please write the step and answer.
an infinitely long cylinder of radius 4.0 cm carries a uniform volume charge density r 200 ncm3. what is the electric
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