Chapter 14: Q2CQ (page 500)
Describe a situation in which heat transfer occurs. What are the resulting forms of energy?
Short Answer
Heat transfer occurs when a metallic spoon is dipped in hot soup. The resulting energy is thermal energy.
Chapter 14: Q2CQ (page 500)
Describe a situation in which heat transfer occurs. What are the resulting forms of energy?
Heat transfer occurs when a metallic spoon is dipped in hot soup. The resulting energy is thermal energy.
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Get started for freeWhat is the temperature of ice right after it is formed by freezing water?
Putting a lid on a boiling pot greatly reduces the heat transfer necessary to keep it boiling. Explain why.
Find the net rate of heat transfer by radiation from a skier standing in the shade, given the following. She is completely clothed in white (head to foot, including a ski mask), the clothes have an emissivity of 0.200 and a surface temperature of 10.0ºC , the surroundings are at −15.0ºC , and her surface area is\({\bf{1}}{\bf{.60}}\;{{\bf{m}}^{\bf{2}}}\).
How is heat transfer related to temperature?
(a) How much heat transfer is necessary to raise the temperature of a\({\rm{0}}{\rm{.200 kg}}\) piece of ice from\({\rm{ - 2}}{{\rm{0}}^{\rm{o}}}{\rm{C}}\)to \({\rm{ - 130}}{{\rm{}}^{\rm{o}}}{\rm{C}}\) , including the energy needed for phase changes?
(b) How much time is required for each stage, assuming a constant\({\rm{20}}{\rm{.0 kJ/s}}\)rate of heat transfer?
(c) Make a graph of temperature versus time for this process.
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