1.

Given a=2i^ +4j^ and b=3j^ +4k^ Calculate magnitude of resultant.

Answer»

a = 2I + 4J and b= 3J + 4kSo resultant is a+b = 2i +7j +4kSo, MAGNITUDE is = √2^2 + 7^2 + 4^2 = √69



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