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PowerPoint PresentationSlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Week 2 1Week 2 2You have 100 grams of water and 100 grams of gold, both sitting at room temperature. Which has a higher thermal energy?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 3You have 100 grams of water and 100 grams of gold, both sitting at room temperature. Which substance’s atoms will be moving faster?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 4Rub your hands together vigorously. What happens?Discuss the energy transfers and transformations that take place.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 5Week 2 6Which is harder to warm: a kilogram of Iron or a kilogram of water?Week 2 7QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 8Week 2 9You heat up 0.25 liters of room temperature water to make some green tea. Assuming very little heat was lost to the environment during this process, how much heat was transferred to the water?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 10Research by snobby tea drinkers reveals that green tea is best steeped at 79oC, not 100oC. How much room temperature water do you need to add to your cup of tea to make the temperature just right?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 11Week 2 12For lunch today you’ve packed • 200 g of carrots from your fridge (Tfridge=3oC, ccarrots=3810 J/kg/K), • 0.5 L of potato leek soup that your roommate just cooked (Tsoup=90oC, csoup=3600 J/kg/K, soup=1.02 g/mL)• and a 200 g banana that was sitting on the counter(Tbanana=20oC, cbanana=3350 J/kg/K).You put everything into an insulated cooler in the morning. What temperature are your lunch foods when you eat them at noon?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2 13Week 2 14• To establish the concept of heat energy transfer from a substance at a higher temperature to one at a lower temperature.• To quantify the relationship between the heat energy transferred to a system and the change in temperature of the system.• To understand the meaning of specific heat and measure its value for several liquids.• To determine the equivalence between the common unit of heat energy, the calorie, and the unit of energy, the joule.LAB 2 OBJECTIVES:Week 2 15Granite and limestone have about the same density but they have different specific heats.Granite: 790 J/kg/K Limestone: 840 J/kg/K You have 100 gram cubes of each. The limestone, initially at 0oC, is placed in thermal contact with the granite, initially at 200oC, in a sealed and insulated container.Is their final temperature greater than, less than or equal to 100oC?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 2


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EvCC PHYS 122 - Week 2 Lecture

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