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# The engine of a large ship does 3.67 1010 J of work with an efficiency of 6.20%. (a) How much waste heat is produced?

The engine of a large ship does 3.67 1010 J of work with an efficiency of 6.20%.

(a) How much waste heat is produced? HINT: This is a two-step problem. Think about the definition of efficiency, and then how "waste heat" is related to "heat in" and "work out." How is efficiency related to output (or work) and heat input? What is the relationship between waste heat, work, and input?

(b) How many barrels of fuel are consumed if each barrel produces 6.00 109 J of heat when burned?