Physics, 22.10.2020 20:01 ilovemeatballs5
Andre is boiling water to cook pasta. The diagram shows some of the changes that occur when water is heated and boiled. These changes involve both energy transfers and energy transformations. An illustration of a pot of water on a burner with the water boiling. Bubbles are visible in the boiling water. The heat from the burner is shown. Steam is rising up from the pot. Describe one example of an energy transformation in this diagram and explain why it is a transformation. Repeat this description and explanation for an energy transfer.
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Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22ยฐc and leaves at 47ยฐc. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
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Andre is boiling water to cook pasta. The diagram shows some of the changes that occur when water is...
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