PowerPoint PresentationSlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Week 6 1Week 6 2Week 6 3A two stroke gas engineIntake/compression strokePower/exhaust strokeWeek 6 4Week 6 5Week 6 6Week 6 7Diesel cycleWeek 6 8Week 6 9You spend a few hours cleaning your room. Afterwards, the room is significantly more orderly than before. Has the second law of thermodynamics been violated?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 6 10You put your warm spaghetti leftovers in the fridge to cool. Cooled spaghetti has a lower entropy than warm spaghetti. Has your spaghetti violated the second law of thermodynamics?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 6 11Which of the following heat engines, if any, violates the first law of thermodynamics?Week 6 12Which of the following heat engines, if any, violates the second law of thermodynamics?Week 6 13Which of the following changes (there may be more than one) would increase the maximum efficiency of a theoretical heat engine?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 6 14A heat engine extracts 54 kJ from the hot reservoir and exhausts 40 kJ into the cold reservoir.What is the work done?What is the engine’s efficiency?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 6 15A heat engine does 300 J of work per cycle while exhausting 500 J of heat to the cold reservoir.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.• What’s the engine’s thermal efficiency?• A Carnot engine (different design) has the same efficiency as the above mentioned engine. This Carnot engine has a hot reservoir temperature of 500oC. What is the cold reservoir temperature?Week 6 16Week 6 17Week 6 18Week 6 19• To understand how a gaseous system may be characterized by temperature, pressure, and volume.• To examine the relationship between any two of these variables when the third is kept constant.• To understand and be able to use the ideal gas law, that describes the relationship between pressure, volume and temperature.• To understand pressure in a gas based on an idealized model of the microscopic motions of molecules, and use this model as a possible explanation for the ideal gas law.LAB 5 OBJECTIVES:Week 6 20A firefighter carries an oxygen tank on their back when entering a burning building. The gas in the oxygen tank heats up as it goes from outside to inside the building.What type of ideal gas process is this?How does it look on a graph of temperature vs pressure?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.volu meWeek 6 21• To be able to describe a heat engine in terms of an energy flow diagram and to calculate the work done in a cycle.• To examine the relationship between temperature and volume for both adiabatic and isothermal expansions and compressions of an ideal gas.•To investigate, both theoretically and experimentally, the relationship between work done by a heat engine and changes in the pressure and volume of the engine’s working medium.• To examine the efficiency of a heat engine in converting heat energy input to useful work output.LAB 6 OBJECTIVES:Week 6 22With your bike pump’s air valve locked (so that no air escapes), you push down on the handle very fast, rapidly compressing the gas inside. You let the gas sit at that volume for a while and then slowly raise the handle back up until the pressure returns to the initial value.• What types of processes are these?• What would this series of actions look like on a pV diagram?• Describe how you could calculate the work done on the gas.• Will the net work done on the gas in this situation be negative or positive?volu meQuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this