You want to freeze some homemade popsicles. You pour 0.24 kg of juice at room temperature...
- You want to freeze some homemade popsicles. You pour 0.24 kg of
juice at room temperature (21 °C) into an ice cube tray in your
freezer, which has a temperature of -17 °C. The specific heat
capacity of juice is 4186 J/kg C°. The latent heat of fusion for
juice is 33.5 x 104 J/kg.
- How much energy do the popsicles release as they cool from room temperature to 0 °C?
- How much energy is released due to freezing the entire set of popsicles?
- You remove one popsicle from the freezer and allow it to come to a temperature where it just starts melting. Your body releases approximately 3 x 105 J of energy every hour. How much of a frozen popsicle’s mass would be melted if you held it in your hands for two minutes after it just started to melt? For this problem, we’ll estimate that 2% of the energy your body releases can be transferred from your hands to the popsicle. (Hint: first, find the amount of energy your body releases in two minutes.)
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You want to freeze some homemade popsicles. You pour 0.24 kg of
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Thank you Item 5 Constants Part A air temperature is the same as the By how...
Thank you
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Thank you
Item 5 Constants Part A air temperature is the same as the By how much would the body temperature of the bicyclist increase in an hour it he were unable to get rid of the excess hear? temperature of your skin (about 30 C), your body in cannot get rnid at heat by transterring it to the air. In that case, it gets rid of the heat by evaporat water (sweat). During bicycling, a typical 75.0 kg person's...
Required information After a long, hard week on the books, you and your friend are ready to relax and enjoy the weekend. You take a steak 54 mm thick from the freezer. Assume that the steak is initially at -8°C, that it thaws when the temperature at the center of the steak reaches 4°C, and that the room temperature is 22°C with a convection heat transfer coefficient of 10 W/m2.K. Neglect the heat of fusion associated with the melting phase...
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