Answer to Question #218668 in Physics for Nova

Question #218668

Given two displacement A=( 8i+4j-2k)m & B = (4i - 6j + 8k)m gind th magnitufe of the displacement 3A-B

Expert's answer

"\\bold{3A-B}=3(8,4,-2)-(4,-6,8)=(20,18,-14)\\\\|\\bold{3A-B}|=\\sqrt{20^2+18^2+14^2}=30.3"

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