anonymous
  • anonymous
Which of the following equations correctly expresses the relation between vectors A⃗ , B⃗ , C⃗ , and D⃗ shown in the figure? http://session.masteringphysics.com/problemAsset/1445612/2/PLCQ_ArtMs_Topic02_Q10_v2.jpg A⃗ +B⃗ −C⃗ +D⃗ =0 A⃗ −B⃗ −C⃗ +D⃗ =0 A⃗ +B⃗ −C⃗ −D⃗ =0 A⃗ +B⃗ +C⃗ +D⃗ =0
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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theEric
  • theEric
Hi! Do you know about vector addition and vector subtraction?
anonymous
  • anonymous
not really some
theEric
  • theEric
Okay! So, |dw:1378058578742:dw|

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anonymous
  • anonymous
+ing them a head would go to b tail
theEric
  • theEric
|dw:1378058636449:dw|You're right! I'll draw that in! And, for subtraction like \(\vec A-\vec B\), you draw \(\vec A\) and from it's head put \(\vec B\)'s head there.
theEric
  • theEric
|dw:1378058851074:dw|
anonymous
  • anonymous
so it would be A⃗ +B⃗ −C⃗ +D⃗ =0
theEric
  • theEric
Or, you could treat it like numbers, where \(\vec A - \vec B=\vec A+ (-\vec B)\), and \((-\vec B)\) is the opposite of \(\vec B\), like|dw:1378058975644:dw|
theEric
  • theEric
I don't think so!|dw:1378059055391:dw|
theEric
  • theEric
|dw:1378059117242:dw|
anonymous
  • anonymous
|dw:1378059213032:dw|
theEric
  • theEric
That one looks good to me! Congrats!|dw:1378059443193:dw|
anonymous
  • anonymous
|dw:1378059468331:dw|
theEric
  • theEric
Wait a sec...
anonymous
  • anonymous
so would my + after my A
theEric
  • theEric
What I did is start from \(\vec A\) and go around the loop.|dw:1378059622538:dw|
anonymous
  • anonymous
|dw:1378059809874:dw|
theEric
  • theEric
Yes!
anonymous
  • anonymous
could you help me with two more
theEric
  • theEric
|dw:1378059927743:dw|
anonymous
  • anonymous
Vector A⃗ , which is shown in the figure, has a magnitude of 10 and a direction angle of 60º. What is the magnitude and direction angle (as measured counterclockwise from the positive x-axis) of −A⃗ /2?
anonymous
  • anonymous
thanks for the help with the one
theEric
  • theEric
You're welcome! Can you ask that in another post? It helps other people to see it, and then we don't have to scroll to see when your first question ends.
theEric
  • theEric
Thanks!

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