Please explain what all the letters in the formulas are.
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Red letters means distance and Black letters means angles
Calculate the magnitude and the angle.A) Vectors: A + BVectors: A - BVectors: - A - BVectors: B - A
Explain the procedure please..
By using the Bohr model, decide which element is likely to emita Kα X-ray with a wavelength of4.5x10-9m.
***Please provide ALL formulas/concepts used***
If a sample of radon has decayed to 60% of its original amount in 5days, then what is its half-life (the time required to decay to 50%of its original amount)?***Please provide ALL concepts/formulas used***