For this question, It states to find the magnitude of vector different A→ - B→ and the direction of the vector different A→ - B→. I found the A→ + B → magnitude and direction but I am confused on what to do when the symbol is a minus. I tried subtracting the same numbers and using other methods but nothing is working out.

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.