An 18 ohm resistor will be used to heat the water in your 1.6 inch diameter fishtank. If a 12VDC power supply is used and the water in your fishtank is 1.5 inches deep, then how long will it take to heat the water in the tank up by 1 C? Assume that the density of water is 1000 kg/m^3.

the answer should be 25.8 seconds

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