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OpenStudy (anonymous):
Help with a unit vector problem please! I always Medal :)
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OpenStudy (anonymous):
OpenStudy (anonymous):
OpenStudy (anonymous):
Question 6 number 3 is what I need help with as I do not understand why the final answer must be divided by seven
OpenStudy (anonymous):
a unit vector has a length (magnitude) of 1. So if you found AB, find its magnitude and divide.
OpenStudy (anonymous):
AB = 2i + 3j + 6k => |AB| = sqrt(2^2 + 3^2 + 6^2) = sqrt(4 + 9 + 36) = sqrt(49) = 7
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OpenStudy (anonymous):
Thanks a lot!
OpenStudy (anonymous):
you're welcome!
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