document.write( "Question 1041982: The voltage E in an electrical circuit is given by E = 7.6 cos 140πt, where t is time measured in seconds. Find the period. \n" ); document.write( "
Algebra.Com's Answer #656884 by stanbon(75887)\"\" \"About 
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The voltage E in an electrical circuit is given by E = 7.6 cos 140πt, where t is time measured in seconds. Find the period.
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\n" ); document.write( "P = (2pi)/b
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\n" ); document.write( "Period = (2pi)/(140pi) = 1/70 of a second
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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