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[ohheytai]

i uploaded it i can't figure out r subscript n i have no idea can someone help me its my last try thanks

 

[0ddbio]

It says that $r_{n}$ and $r_{a}$ give the position with respect to the origin, while r is a relative position vector.

So what vectors would $r_{n}$ and $r_{a}$ be if they start at the origin? Where would the end of those vectors lie? Given that $r = r_{n} - r_{a}$.
If the answer isn't obvious then review material on graphically subtracting vectors.

 

[ohheytai]

i only have the vector sum though and i don't have those two vectors

 

[cupid.callin]

Note that in a displacement vector r = ra - rb

ra is the vector from origin to head of the vector r
and rb is vector from origin to tail of vector r

 

[rwisz]

Thank you for reaching out for assistance with your vector problem. We understand that it can be challenging to solve certain problems, especially when it comes to complex mathematical concepts like vectors.

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To get started, you can upload your problem and any relevant information, such as equations or diagrams, and our team will analyze it to determine the appropriate solution. We also offer a step-by-step explanation of the solution to help you understand the process better.

Don't worry about the subscript "n", our experts will be able to assist you with that as well. Just give it a try and see how our solution can help you. We are confident that with our help, you will be able to solve your vector problem successfully.

Thank you for considering our services, and we look forward to helping you with your problem. Good luck!