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The position vector for an electron is 4.7m- 18.5 m 7 mi 8.5 m8.6 m 8.6 m k. Find the magnitude of r Numbe UnitšT nm the tolerance is +/-1 in the 2nd significant digitThe position vector for an electron is r Overscript right-arrow EndScripts equals left-parenthesis 4.7 m right-parenthesis i Overscript ? EndScripts minus left-parenthesis 8.5 m right-parenthesis j Overscript ? EndScripts plus left-parenthesis 8.6 m right-parenthesis k Overscript ? EndScripts. Find the magnitude of r Overscript right-arrow EndScripts.

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Answer #1

given r = 4.7 i - 8.5 j + 8.6 k

|r| = sqrt(4.7^2+(-8.5)^2 + 8.6^2) = 12.97

hence the magnitude of r = 12.97 m

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