document.write( "Question 436180: The heat H developed in an electric resistor varies jointly as the time t and the square of the current i in the resistor. If H^0 joules of heat are developed in t^0 seconds with i^0 amperes passing through the resistor:\r
\n" ); document.write( "\n" ); document.write( "i) Set up the proportionality relationship.
\n" ); document.write( "ii) How much heat is developed if both the time and the current are tripled? \n" ); document.write( "
Algebra.Com's Answer #301767 by stanbon(75887)\"\" \"About 
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The heat H developed in an electric resistor varies jointly as the time t and the square of the current i in the resistor. If H^0 joules of heat are developed in t^0 seconds with i^0 amperes passing through the resistor:
\n" ); document.write( "i) Set up the proportionality relationship.
\n" ); document.write( "Ho = k*to*io^2
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\n" ); document.write( "ii) How much heat is developed if both the time and the current are tripled?
\n" ); document.write( "Heat = k(3to)(3io)^2
\n" ); document.write( "----
\n" ); document.write( "Heat = k(3to)(9io)
\n" ); document.write( "Heat = 27k*to*io
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\n" ); document.write( "The heat is multiplied by 27.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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