3 of 20 Which of the following is the most accurate statement concerning the fir

Question

3 of 20 Which of the following is the most accurate statement concerning the first law of thermodynamics? The first law of thermodynamics describes the relationship between systems in thermal equilibrium. e The first law of thermodynamics describes the relationship between heat, work, and internal energy in a thermodynamic system. The first law of thermodynamics describes the conservation of energy in an open thermodynamic system. The first law of thermodynamics describes the conservation of energy in a closed thermodynamic system. More than one of given statements are accurate. 0 out of 2 The correct answer is: More than one of given statements are accurate.

Explanation / Answer

3)

the answers are option A, B,C

first law of thermodynamics is also called conservation of energy.it is applied to an open system.and give the relation between heat ,work and internal energy

4)

in 2nd law of thermodynamics staes that total entropy of an ideal system can increases over time thepotential energy of the system will always less than the initial state

so the asnswer is

no cyclic thermodynamics systen can convert heat completely into mechanical work

6)the answers areoption A,C,D

15) the answers are A,B,D

17) efficiency= output/ input

the efficiency for all engine can be calculated as follows

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