Mastering Vector Addition for Honors Physics Students

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Ron seeks assistance with vector addition for his Honors Physics class after missing the lesson. He struggles with graphically adding vectors given in specific directions and magnitudes. He understands the basic concept of drawing arrows to represent the vectors but needs clarification on the process. A helpful link on vector addition is shared, which seems to provide the necessary guidance. Ron expresses optimism about completing the take-home quiz correctly.
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Need help with a "VECOTR QUIZ"

So it's me Ron again, in my Honors Physics class, so what I need help with is something that may be basic to everyone else, but I find challenging, because the day we learned this stuff I was absent from class, so you can imagine this is hard for me.

OK, I get questions like (m=meters)
"1. Add the below vectors graphically."

23m, 39° N of E
12m, W
18m, 17° N of W​

I do not know anything about graphing this, I do have the idea of drawing arrows in the direction of the degrees and then connecting them?
 
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You at least know how to draw the given vectors themselves right?
If so check out this link on vector addition. That should hook you up with the info you need.
 
OH WOW, imagine that, this helps... really easy lol. Although I hope I do this right, more than likely it will be right, I love take home quizes!
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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