Potassium is an essential element that normally comprises
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. 0.012% of potassium is the radioactive 40K, with half-life 1.28×109 years.
What's the potassium activity in a 69kg person?
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Two linear waves have the same amplitude and speed, and otherwise are identical except one has half the wavelength of the other, Which transmits more energy
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Potassium is an essential element that normally comprises about 0.30% of a person's body mass. What's the potassium activity in a 69kg person
the element neptunium possesses 93 electrons and weighs 237 amu. Calculate the contribution (in %) of its electrons to its total mass.
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How does he defend the boldness of his assertion - how does Singer rationalize the substantial and fundamental differences between humans and animals?
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
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