Two drinking glasses are stuck, one inside the other. How would you get them unstuck?



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Two drinking glasses are stuck, one inside the other. How would you get them unstuck?

  • Two drinking glasses are stuck, one inside the other. How would you get them unstuck?



Two drinking glasses are stuck, one inside the other. How would you get them unstuck?

  • Two drinking glasses are stuck, one inside the other. How would you get them unstuck?







Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole?

  • Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole?



Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole?

  • Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole?



A steel ring stands on edge with a rod of some material inside. As this system is heated, for which of the following rod materials will the rod eventually touch the top of the ring?

  • A steel ring stands on edge with a rod of some material inside. As this system is heated, for which of the following rod materials will the rod eventually touch the top of the ring?



A steel ring stands on edge with a rod of some material inside. As this system is heated, for which of the following rod materials will the rod eventually touch the top of the ring?

  • A steel ring stands on edge with a rod of some material inside. As this system is heated, for which of the following rod materials will the rod eventually touch the top of the ring?



You want to take apart a couple of aluminum parts held together by steel screws, but the screws are stuck. What should you do?

  • You want to take apart a couple of aluminum parts held together by steel screws, but the screws are stuck. What should you do?



You want to take apart a couple of aluminum parts held together by steel screws, but the screws are stuck. What should you do?

  • You want to take apart a couple of aluminum parts held together by steel screws, but the screws are stuck. What should you do?











Two equal-mass liquids, initially at the same temperature, are heated for the same time over the same stove. You measure the temperatures and find that one liquid has a higher temperature than the other. Which liquid has a higher specific heat?

  • Two equal-mass liquids, initially at the same temperature, are heated for the same time over the same stove. You measure the temperatures and find that one liquid has a higher temperature than the other. Which liquid has a higher specific heat?



Two equal-mass liquids, initially at the same temperature, are heated for the same time over the same stove. You measure the temperatures and find that one liquid has a higher temperature than the other. Which liquid has a higher specific heat?

  • Two equal-mass liquids, initially at the same temperature, are heated for the same time over the same stove. You measure the temperatures and find that one liquid has a higher temperature than the other. Which liquid has a higher specific heat?







Water has a higher specific heat than sand. Therefore, on the beach at night, breezes would blow:

  • Water has a higher specific heat than sand. Therefore, on the beach at night, breezes would blow:



Water has a higher specific heat than sand. Therefore, on the beach at night, breezes would blow:

  • Water has a higher specific heat than sand. Therefore, on the beach at night, breezes would blow:



1 kg of water at 100 oC is poured into a bucket that contains 4 kg of water at 0 oC. Find the equilibrium temperature (neglect the influence of the bucket).

  • 1 kg of water at 100 oC is poured into a bucket that contains 4 kg of water at 0 oC. Find the equilibrium temperature (neglect the influence of the bucket).



1 kg of water at 100 oC is poured into a bucket that contains 4 kg of water at 0 oC. Find the equilibrium temperature (neglect the influence of the bucket).

  • 1 kg of water at 100 oC is poured into a bucket that contains 4 kg of water at 0 oC. Find the equilibrium temperature (neglect the influence of the bucket).











Two identical cylinders at the same temperature contain the same gas. If A contains three times as much gas as B, which cylinder has the higher pressure?

  • Two identical cylinders at the same temperature contain the same gas. If A contains three times as much gas as B, which cylinder has the higher pressure?



Two identical cylinders at the same temperature contain the same gas. If A contains three times as much gas as B, which cylinder has the higher pressure?

  • Two identical cylinders at the same temperature contain the same gas. If A contains three times as much gas as B, which cylinder has the higher pressure?



Two identical cylinders at the same pressure contain the same gas. If A contains three times as much gas as B, which cylinder has the higher temperature?

  • Two identical cylinders at the same pressure contain the same gas. If A contains three times as much gas as B, which cylinder has the higher temperature?



Two identical cylinders at the same pressure contain the same gas. If A contains three times as much gas as B, which cylinder has the higher temperature?

  • Two identical cylinders at the same pressure contain the same gas. If A contains three times as much gas as B, which cylinder has the higher temperature?







A plastic soda bottle is empty and sits out in the sun, heating the air inside. Now you put the cap on tightly and put the bottle in the fridge. What happens to the bottle as it cools?

  • A plastic soda bottle is empty and sits out in the sun, heating the air inside. Now you put the cap on tightly and put the bottle in the fridge. What happens to the bottle as it cools?



A plastic soda bottle is empty and sits out in the sun, heating the air inside. Now you put the cap on tightly and put the bottle in the fridge. What happens to the bottle as it cools?

  • A plastic soda bottle is empty and sits out in the sun, heating the air inside. Now you put the cap on tightly and put the bottle in the fridge. What happens to the bottle as it cools?



What happens to the volume of a balloon if you put it in the freezer?

  • What happens to the volume of a balloon if you put it in the freezer?



What happens to the volume of a balloon if you put it in the freezer?

  • What happens to the volume of a balloon if you put it in the freezer?











You put 1 kg of ice at 0oC together with 1 kg of water at 50oC. What is the final temperature?

  • You put 1 kg of ice at 0oC together with 1 kg of water at 50oC. What is the final temperature?

    • LF = 80 cal/g
    • cwater = 1 cal/g oC


You put 1 kg of ice at 0oC together with 1 kg of water at 50oC. What is the final temperature?

  • You put 1 kg of ice at 0oC together with 1 kg of water at 50oC. What is the final temperature?

    • LF = 80 cal/g
    • cwater = 1 cal/g oC


You put 1 kg of ice at 0oC together with 1 kg of steam at 100oC. What is the final temperature?

  • You put 1 kg of ice at 0oC together with 1 kg of steam at 100oC. What is the final temperature?

    • LF = 80 cal/g, Lv = 540 cal/g
    • cwater = 1 cal/g oC


You put 1 kg of ice at 0oC together with 1 kg of steam at 100oC. What is the final temperature?

  • You put 1 kg of ice at 0oC together with 1 kg of steam at 100oC. What is the final temperature?

    • LF = 80 cal/g, Lv = 540 cal/g
    • cwater = 1 cal/g oC


Which will cause more severe burns to your skin: 100 °C water or 100 °C steam?

  • Which will cause more severe burns to your skin: 100 °C water or 100 °C steam?



Which will cause more severe burns to your skin: 100 °C water or 100 °C steam?

  • Which will cause more severe burns to your skin: 100 °C water or 100 °C steam?



You step out of a swimming pool on a hot day, where the air temperature is 90° F. Where will you feel cooler, in Phoenix (dry) or in Philadelphia (humid)?

  • You step out of a swimming pool on a hot day, where the air temperature is 90° F. Where will you feel cooler, in Phoenix (dry) or in Philadelphia (humid)?



You step out of a swimming pool on a hot day, where the air temperature is 90° F. Where will you feel cooler, in Phoenix (dry) or in Philadelphia (humid)?

  • You step out of a swimming pool on a hot day, where the air temperature is 90° F. Where will you feel cooler, in Phoenix (dry) or in Philadelphia (humid)?



A free expansion occurs when a valve is opened allowing a gas to expand into a bigger container. In such an expansion the temperature of the gas will:

  • A free expansion occurs when a valve is opened allowing a gas to expand into a bigger container. In such an expansion the temperature of the gas will:



A free expansion occurs when a valve is opened allowing a gas to expand into a bigger container. In such an expansion the temperature of the gas will:

  • A free expansion occurs when a valve is opened allowing a gas to expand into a bigger container. In such an expansion the temperature of the gas will:





  • In the closed thermodynamic cycle shown in the P-V diagram, the work done by the gas is:



  • The heat engine below is:



  • The heat engine below is:



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