Question 1 Which action would decrease the entropy of a deck of playing cards?

Question 1 Which action would decrease the entropy of a deck of playing cards? A.Dropping the deck on the floorB.Throwing the deck up into the airC.Stacking the cards in order of face valueD.Shuffling the deck 

Question 2 Which of the following changes occurs naturally in a system over time? A.Increasing in energyB.Becoming more efficientC.Increasing in randomnessD.Becoming more organized 

Question 3 What type of device is a car engine? A.A heat pump that uses heat to do workB.A heat pump that uses work to move heatC.A heat engine that uses heat to do workD.A heat engine that uses work to move heat 

Question 4 Which of the following situations would violate the second law of thermodynamics? A.Ice melting in a glass of lemonade on a hot dayB.A cup of lemonade turning to ice in freezing weatherC.A glass of lemonade starting to freeze in a warm roomD.Lemonade being frozen into ice in a freezer 

Question 5 Which of the following statements agrees with the second law of thermodynamics? A.Energy tends to increase.B.Heat flows spontaneously from cold to hot.C.Heat cannot ever go from cold to hot.D.Entropy tends to increase. 

Question 6 What is entropy? A.Work done on a systemB.A measure of the efficiency of a systemC.Heat flowing from cold to hotD.A measure of the randomness of a system 

Question 7 What is the efficiency of an engine that does 20 J of work and exhausts 80 J of heat while taking in 100 J of heat? Use . A.25%B.20%C.10%D.80% 

Question 8 Which of the following is not permitted, based on the second law of thermodynamics? A.Heat flowing from hot to coldB.A machine that is 80% efficientC.Heat flowing from cold to hotD.Heat being completely converted into mechanical energy 

Question 9 Which of the following describes the work done by a heat engine? A.Heat input minus heat outputB.Heat input minus workC.Heat input plus heat outputD.Heat output minus heat input Question 10 A heat engine is used to convert heat into which of the following? A.LightB.Internal energyC.EntropyD.Work