(Answered) 836 kj of heat is supplied to 2 kg of water c 4160 jkgdeg c

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83.6 kJ of heat is supplied to 2 kg of water (c =4160 J/kg° C). What is the increase in the temperature of water?

An engine takes 8x10⁵ J of heat and expels 6x10⁵ J of heat in each cycle of operation. What is its efficiency?

How much heat is required to increase the temperature of 2 kg water from 25° C to 30° C?

When heat is added to a system, its internal energy increases by 5 J. What is the amount of heat added to a system if the system does 18 J of work?

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