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Introductory Physics Homework Help
This magnet question confounds me
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[QUOTE="lodovico, post: 4313953, member: 458512"] [h2]Homework Statement [/h2] Today, my teacher gave us some practice AP multiple choice and my friend and I were debating between answer choices H and J (changed from A and B to remove any confusion) the question as i remember it: blah blah... B-field into the page, constant velocity v, radius R and charge q. which graph shows the relationship between B-field and radius.. something with radius getting smaller as B-field gets larger Choice H: this is a straight line coming from +y crossing the +x axis (basically a straight negative slope) Choice J: the (1/x) graph with x>0 [h2]Homework Equations[/h2] Fc = mv^2/r Fb= qvB [h2]The Attempt at a Solution[/h2] [SIZE="4"]Fc=Fb [itex]\frac{mv^2}{r}[/itex]=qvB [itex]\frac{mv}{r}[/itex]=qB since mv and q are constants, is it ok to treat them as 1? that is what i did so... [itex]\frac{1}{r}[/itex]=B [itex]\frac{1}{B}[/itex]=r [/SIZE] since on the graphs r was the y-axis and B was the x-axis i chose the (1/x) shaped graph [/QUOTE]
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Introductory Physics Homework Help
This magnet question confounds me
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