imagine this experimental setup: One temperature probe is in embedded in a small block of frozen...
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imagine this experimental setup: One temperature probe is in embedded in a small block of frozen sugar water at -20. The frozen sugar water is in a small test tube The melting/freezing point of this sugar water is -5C. A second temperature probe is placed in a Styrofoam cup containing water at 20C. After the temperature of each substance has been recorded for 1 minute, the test tube of frozen sugar water is placed into the cup of water such that none of the liquid water enters the test tube. The graph for the temperature of the (initially) frozen sugar water is shown below. A B 20 T (C) -20 C D E time (s) 1. (5 pts) On the same graph, draw in the line representing the temperature of the liquid water that is initially at 20C. This line should only be horizontal in two of the above regions. You can copy and paste the graph into PowerPoint or another graphic design program, or you can draw it by hand and upload a photo of it. 2. (5 pts) Explain the direction of energy transfer in this experiment (that is, which substance is losing energy and which substance is gaining energy). 3. (5 pts) In which two regions is there no energy transfer? 4. (5 pts) The part of this process that takes the most time is shown in Region C. Explain what is occurring in this region. 5. (5 pts) Thermal energy is transferred whenever there are two substances at different temperatures in thermal contact with one another. Thermal energy that flows in/out a substance can do one of two things: imagine this experimental setup: One temperature probe is in embedded in a small block of frozen sugar water at -20. The frozen sugar water is in a small test tube The melting/freezing point of this sugar water is -5C. A second temperature probe is placed in a Styrofoam cup containing water at 20C. After the temperature of each substance has been recorded for 1 minute, the test tube of frozen sugar water is placed into the cup of water such that none of the liquid water enters the test tube. The graph for the temperature of the (initially) frozen sugar water is shown below. A B 20 T (C) -20 C D E time (s) 1. (5 pts) On the same graph, draw in the line representing the temperature of the liquid water that is initially at 20C. This line should only be horizontal in two of the above regions. You can copy and paste the graph into PowerPoint or another graphic design program, or you can draw it by hand and upload a photo of it. 2. (5 pts) Explain the direction of energy transfer in this experiment (that is, which substance is losing energy and which substance is gaining energy). 3. (5 pts) In which two regions is there no energy transfer? 4. (5 pts) The part of this process that takes the most time is shown in Region C. Explain what is occurring in this region. 5. (5 pts) Thermal energy is transferred whenever there are two substances at different temperatures in thermal contact with one another. Thermal energy that flows in/out a substance can do one of two things:
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Related Book For
University Physics With Modern Physics
ISBN: 978-0073513881
2nd edition
Authors: Wolfgang Bauer, Gary Westfall
Posted Date:
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