Two blocks are placed in contact with one another. The one on the left has a temperature of 150 K, and the one on the right has a tempera- ture of 275 K. Left alone, what will happen to the temperatures of the objects? A The blocks will both reach an equilibrium temperature between 150 K and 275 K. B Each block will take on the other block's temperature, with 275 K on the left and 150 K on the right. C Both blocks will become hotter until their temperatures reach 425 K. Both blocks will lose heat until they reach a temperature of 125 K.
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- In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 11.9 °C. The temperature at the inside surface of the wall is 19.0 °C. The wall is 0.13 m thick and has an area of 7.5 m². Assume that one kilowatt hour of electrical energy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall? Number i UnitsA diving bell is a 5.0 m-tall cylinder closed at the upper end but open at the lower end. The temperature of the air in the bell is 30 °C. The bell is lowered into the ocean until its lower end is 100 m deep. The temperature at that depth is 10°C. Part A How high does the water rise in the bell after enough time has passed for the air to reach thermal equilibrium? Express your answer with the appropriate units. h = Submit Part B μA Value Request Answer Units ? A compressed-air hose from the surface is used to expel all the water from the bell. What minimum air pressure is needed to do this? Express your answer with the appropriate units.Consider the wire grid shown below. The temperature at the black nodes is held constant. When the temperature is at equilibrium, the temperature at the white nodes is the average of the temperatures of the adjacent nodes. Find the equilibrium temperature of the wire grid. 10 T₁ T3 30 T₂ 70
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