document.write( "Question 79496: Problem is
\n" ); document.write( "Science and medicine. The combined resistance of two resistors R1 and R2 in a
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Algebra.Com's Answer #57044 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Problem is \r\n" );
document.write( "Science and medicine. The combined resistance \r\n" );
document.write( "of two resistors R1 and R2 in a\r\n" );
document.write( "parallel circuit is given by the formula \r\n" );
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document.write( "\"Rt+=+1%2F%281%2FR1+%2B+1%2FR2%29\"\r\n" );
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document.write( "Write the \"1\" on top as \"1%2F1\" to\r\n" );
document.write( "make everything fractions:\r\n" );
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document.write( "\"Rt+=+%281%2F1%29%2F%28%281%2FR1+%2B+1%2FR2%29%29\"\r\n" );
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document.write( "The LCD of all the denominators is \"R1%2AR2\".\r\n" );
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document.write( "Write that as \"%28R1%2AR2%29%2F1\"\r\n" );
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document.write( "Multiply top and bottom of right side by that\r\n" );
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document.write( "\"Rt+=+%28+%28R1%2AR2%29%2F1%29%2F%28%28R1%2AR2%29%2F1%29\"\"%281%2F1%29%2F%28%281%2FR1+%2B+1%2FR2%29%29\"\r\n" );
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document.write( "The top just becomes \"R1%2AR2\"\r\n" );
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document.write( "\"Rt+=+%28R1%2AR2%29%2F%28%28%28R1%2AR2%29%2F1%29%281%2FR1+%2B+1%2FR2%29%29\"\r\n" );
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document.write( "In the bottom we distribute the \"%28%28R1%2AR2%29%2F1%29\"\r\n" );
document.write( "into the right parentheses:\r\n" );
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document.write( "The R1's cancel in the first term on the bottom and the\r\n" );
document.write( "R2's cancel in the second term on the bottom, so we end \r\n" );
document.write( "up with just\r\n" );
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document.write( "\"Rt+=+%28R1%2AR2%29%2F%28R2%2BR1%29\"\r\n" );
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document.write( "You might want to reverse the the terms in the bottom\r\n" );
document.write( "so they will be in numerical order:\r\n" );
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document.write( "\"Rt+=+%28R1%2AR2%29%2F%28R1%2BR2%29\"\r\n" );
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document.write( "which says:\r\n" );
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document.write( "\"The total resistance of two resistors in parallel is\r\n" );
document.write( "the product of their resistances over their sum.\"\r\n" );
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document.write( "Edwin
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