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Mathematics 8 Online

OpenStudy (anonymous):

I need help finding the dot product of E * F. Here's an image below. I keep on getting 10.4, but it doesn't seem like it should be the correct answer :( Wouldn't I do 4*3*cos(30) https://session.masteringphysics.com/problemAsset/1384302/5/knight_Figure_11_02c.jpg

11 years ago

OpenStudy (jhannybean):

Are you sure it's the product of \(\vec E \cdot \vec F\)? I see \(\vec A\) and \(\vec B\) there

11 years ago

OpenStudy (anonymous):

I updated it. https://session.masteringphysics.com/problemAsset/1384302/5/knight_Figure_11_02c.jpg

11 years ago

OpenStudy (anonymous):

Wouldn't I do 4*3*cos(30)?

11 years ago

OpenStudy (jhannybean):

ah, right.

11 years ago

OpenStudy (jhannybean):

Yes, that's about right.

11 years ago

OpenStudy (anonymous):

i got 6

11 years ago

OpenStudy (anonymous):

It's all good, guys. I've contacted the book publisher, and it was an error on their side. Thanks, guys. :)

11 years ago

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