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1.) What is the First Law of Thermodynamics? a\) Energy cannot be destroyed, only created. b\) The entropy of an isolated system always increases. c\) Energy cannot be created or destroyed, only transferred or transformed. d\) The total energy in the universe is decreasing. 2.) In a thermodyna...

1.) What is the First Law of Thermodynamics? a\) Energy cannot be destroyed, only created. b\) The entropy of an isolated system always increases. c\) Energy cannot be created or destroyed, only transferred or transformed. d\) The total energy in the universe is decreasing. 2.) In a thermodynamic process, if the intemal energy of a system increases by 50 J and 30 J of work is done on the system, how much heat is added? a\) 80 J b\) 20 J c\) -20 J d\) 30 J 3.) Which of the following represents the First Law of Thermodynamics mathematically? a\) AU = Q + W b\) AU = Q -W c\) 45 = AQ/T d\) PV = nRT 4.) in an adiabatic process, which of the foliowing is true? a\) No heat is exchanged. b\) No work is done. c\) The temperature remains constant. d\) The internal energy remains constant. 5.) if a gas undergoes an isothermal expansion, which quantity remains constant? a\) Pressure b\) Volume c\) Temperature d\) Internal energy 6.) For a cyclic process, the net work done is equal to: a\) The change in internal.energy b\) Zero c\) The heal absorbed d\) The net heat exchanged 7.) The Second Law of Thermodynamics states that: a\) The entropy of an isolated system can decrease. b\) Energy is always conserved. c\) The entropy of an isolated system always increases or remains constant. d\) Heat flows spontaneously from cold to hot bodies. 8.) Which process violotes the second low of thermodynamics? al Heat flowing from a hot object to a coid object. bl Energy being lost as heat in a machine C\) Heat flowing spontaneously from a cold object ta a not object d\) An engine converting heat into work 9\) What is the efficiency of a Camot engine operating between a hat reservoir at 500 K and a cold reservolt at 300 K₴ a\) 0.60 b\) 0,40 c\) 0.50 d) 0,25 10.) Which of the following best describes entropy? a\) A measure of energy conservation b\) A measure of disorder or randomness in a system c\) A measure of the work output of a system d\) A measure of heat flow between systems 11.) In an irreversible process, the entropy of the system: a\) Decreases b\) Increases c\) Stays the same d\) Can increase or decrease 12.) Which statement is true for a perfectly efficient heat engine? a\) It converts all heat into work. b\) It operates in violation of the Second Law of Thermodynamics. c\) It releases no heat to the environment. d\) Its efficiency is always 100%. 13.) Which of the following is Ohm\'s Law? a\) P= IV b\) V = IR c\) V = I/R d\) \| = V/R 14\. What is the current through a 100 resistor connected to a 120 V power supply? a\) 12 A b\) 0.83 A c\) 120 A d\) 6 A 15.) If the resistance in a circuit is doubled, what happens to the current, assuming constant voltage? a\) It doubles b\) It halves c\) It stays the same d\) it increases exponentially 16.) In a parallel circuit, the total resistance is: a\) Greater than any of the individual resistances b\) Less than any of the individual resistances c\) Equal to the sum of all resistances d\) The same as in a series circuit 17\) What is the power consumed by a device connected to a 230 V supply and drawing 5 A of curtent? a\) 115 W b\) 460 W c\) 1150 W d\) 690 W 18.) Which of the following materiais is a good conductor of electricity? a\) Plastic b\) Gloss c\) copper d\) Wood