The refrigerator in your kitchen does 490 J of work to remove 95 J of heat from its interior. How much heat does the refrigerator exhaust into the kitchen?
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- A heat machine is working between two thermal reservoirs with the temperatures of 800oC and 20oC. ¼ of the work of heat machine is being used to operate a Carnot heat pump. This heat pump draws heat from the outside environment at a temperature of 2oC and transfers it to a home at a temperature of 22oC. Given house is losing a heat of 62000 kJ per hour to the outside world, the heat engine must be supplied to keep the house stable at 22oC. Calculate the minimum amount of heat that should be supplied to the heat machine to keep the house stable at 22 degrees.An automobile engine generates 2202 Joules of heat that must be carried away by the cooling system. The internal energy changes by -2762 Joules in this process.Calculate w for the engine. This represents the work available to push the pistons in this process.w = ______ JoulesA heat engine operates between a hot reservoir at 500°C and a cold reservoir at 25°C. It has an efficiency of 40%. Calculate the amount of heat absorbed from the hot reservoir when the engine expels 1500 J of heat to the cold reservoir.
- Would you be willing to financially back an inventor who is marketing a device that she claims has 25 kJ of heat transfer at 600o K, has heat transfer to the environment at 300o K, and does 12 kJ of work? Explain your answer.Warm winds called Chinooks sweep across the plains ju Mountains. These winds carry air from high in the mountain rapidly enough that the air has no time to exchange heat with a particular Chinook day, temperature and pressure high in the 60 kPa and 265 K, respectively; the plain below is 90 kPa. (a) the plain, does its volume increase or decrease? (b) How about And its internal energy? Please give explanations for all your answersSuppose a woman does 650 J of work and 9250 J of heat is transferred from her into the environment in the process. What is the change in her internal energy, in joules, assuming she does not consume any food? AU= What is her percent efficiency? n (%) = ||