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What is the percentage efficiency of the boat A boat motoring across a lake transforms 1600 J of chemical energy in its fuel into 950 J heat 250 J of sound 400 J kinetic.?
Wiki User
∙ 6y ago
You need to divide the kinetic energy by the energy used (i.e., by the chemical energy), and convert that into a percentage.Note that in practice, normally you would use units of power (such as watts, equal to joules/second) rather than energy (such as joules).
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoIf all the heat is waste, then the efficiency is 25%.
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