Geography, 18.09.2019 00:00, lucywood2024
The ages of rocks that contain fossils can be determined using the isotope 87rb. this isotope of rubidium undergoes beta decay with a half‑life of 4.75×1010y . ancient samples contain a ratio of 87sr to rb87 of 0.0165. given that 87sr is a stable product of the beta decay of 87rb, and assuming there was originally no 87sr present in the rocks, calculate the age of the rock sample. assume that the decay rate is constant over the relatively short lifetime of the rock compared to the half-life of 87rb.
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Geography, 22.06.2019 18:00, wrestling2
Nwhat way does renewable energy differ from nonrenewable energy?
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Geography, 23.06.2019 20:50, oneicyahdaley10
Question 51 ptssolve. assume the exercise describes a linear relationship. marty's tee shirt & jacket company is to produce a new line of jackets with a embroidery of atpvtenpoeyiliceorsuit ut itoare fixed costs of $59 u to set ud for production, andvariable costs of $39 per jacket. write an equation that can be used to determine the total costencountered by marty's company in producing x jackets. use the equation to find the total cost ofproducing 50 jackets.$2520s2532o $2540s2552
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The ages of rocks that contain fossils can be determined using the isotope 87rb. this isotope of rub...
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