Lab 11

docx

School

University of Michigan *

*We aren’t endorsed by this school

Course

Subject

Physics

Date

Dec 6, 2023

Type

docx

Pages

Uploaded by AlphaChi85

Physics 201 (General Physics-1) LAB #11 Temperature, Heat, and Thermal Equilibrium Your name: Olivia Beall Student ID: 7966485 Date: 7/12/2022 Lab partners name: Lab Instructor’s name: _____ Aiden Pereira ________ Prof. Stephen Kamanda _____ Mohammad Nawal ________ Objectives: The purpose of this experiment was to gain some basic knowledge about heat transfer and measurement of temperature and heat loss/gain from one material to another. In this lab, it was examined how the temperature of your thermometer changes when immersed in three different systems and how your predicted data compare with the experimental measurements. Theory: Thermal energy is the internal energy contained by a substance because of the vibration and movement of the atoms and particles of the object. Heat is the transfer of thermal energy from one object to another object. Heat always moves from areas of high temperature to areas of lower temperature until it reaches thermal equilibrium and spreads out evenly. Materials and Methods: Three styrofoam cups were filled with 100 mL of water, one contained hot water, one contained ice water, and the last cup contained room temperature water. A thermometer was placed in each cup, and the water’s temperature was recorded every minute for 18 minutes. For the second part of the experiment, a mixture of hot and cold water and a mixture of hot and room temperature water was placed in two cups. Thermometers were added to the cups and their temperature was recorded every minute for 15 minutes. A hot plate was used to heat the water, and beakers were used to measure the water, before putting it into the styrofoam cups. Prediction Graph: Use three different colored pencils, draw a graph of how you think the water temperature in each cup will change over the 15-minute time interval. Explain in words what you think

will happen to the temperature of the three cups of water, and explain WHY you think the graph will look that way. It is predicted that the cup full of room temperature water will remain about the same temperature since the water in the cup is the same as the temperature in the room. There is nothing acting upon the water in the cup to change the temperature, so it will remain the same. It is also predicted that the ice water cup will stay around the same temperature since Styrofoam has insulating properties, it will allow the water in the cup to stay constant. However, as the ice melts during the experiment, it is reasonable to believe that the temperature may increase. Finally, it is predicted that the hot water cup will slowly lose some heat. Although the Styrofoam will insulate the water to keep some of the heat in, it will only slow the cooling of the water. Data Tables

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Graph: Temperature vs time

Results and discussion: (1) In one sentence, briefly describe what you tested in this experiment: This experiment tested heat transfer and the measurement of temperature and heat loss/gain from one material to another. 2. Explain how the temperature of the ice water, room temperature water, and hot water changed during the 15-minute time frame. Be sure to use the actual numbers from your data table in your explanation. The temperature from both the room temperature and cold water cup remained relatively constant. The cup with cold water was consistent at around 4° C, with it raising occasionally to 5° C. Although this temperature change could be attributed to the individual reading the thermometer. The same can be said for the cup with room temperature water, as it was mostly consistent at a value of 23° C, and occasionally changed to 24° C. Although, the cup of hot water had a temperature change of 16° C. It had a starting temperature of 59° C and a final temperature of 43° C. 3. What trends or patterns do you see in the graph you made? What happens to the three lines in the graph? The lines on the graph all begin to stabilize as time goes on. In other words, the cups of water all begin to reach room temperature by the end of the experiment. The hot water cup had a steady decline in temperature, the cold water cup had a general increase in temperature, and the room

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

temperature cup remained constant. 4. How did the heat transfer in the ice water? From where did the heat transfer? Did this heat transfer slow down or stop during the 15-minute time frame? Why? The heat was transferred from the outside surrounding air to the ice water. There was a heat transfer that takes within the fluid, which is convection. The heat transfer slowed in the 15-minute interval because the water was nearing a more stable temperature, which was more similar to the air. 5. How did the heat transfer when you mixed hot and cold water? From where did the heat transfer? Did this heat transfer slow down or stop during the 15-minute time frame? Why? The heat is transferred from the hot water to the ice water. This was because both water temperatures were in direct contact, which is conduction. The heat transfer slowed during the 15-minute interval because the mixture approached an equilibrium temperature. Conclusion Questions: 1. Was your hypothesis supported by your data, or do you need to reject your hypothesis because it was not supported by your data? My hypothesis was supported by the data because the cold water and room temperature water cups remained constant for the most part, and the hot water temperature decreased over time. 2. Compare your prediction graph to the actual data. Was your prediction close to the actual results? How was it similar? How was it different? My prediction graph and the experimental graph were similar in the fact that the room temperature cup was a stable horizontal line, and the hot water cup had a negative slope. 3. How does this lab demonstrate thermal equilibrium? The lab demonstrates thermal equilibrium, because as time goes on, the hot water, cold water, and room temperature water cup all begin to stabilize around the same temperature, which is thermal equilibrium. 4. How does the final temperature at thermal equilibrium condition compare between hot water/room temperature water vs. hot water/ice-cold water? The second part of this experiment also demonstrates thermal equilibrium, because both cups of water cooled to be around the same temperature (30 ° C for the cup with hot and cold water, and 38° C for the cup with hot and room temperature water).

Related Documents

PWV 12 Static Kinetic Friction (Force).docx

lab report collision.pdf

PWV 09 Newton 2nd christian.pdf

Lab 10 .docx

Lab 4. Free Fall Motion (1) (2).docx

Physics 201_Laboratory Exercise (2)-1-1.docx

PCS130 Lab Report #1 (1).pdf

Lab Report #2 Determining g on an Incline - PCS120.pdf

Screen Shot 2023-11-25 at 7.41.20 PM.jpeg

Investigation 15 - Magnetic Field Lines (1).docx

_Lab Report Collision .pdf

GAM 415 Module Five Tutorial Guidelines(NEW)(4).docx

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text

Physics

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

College Physics

Physics

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Cengage Learning

Physics for Scientists and Engineers: Foundations...

Physics

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Cengage Learning

College Physics

Physics

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Cengage Learning

Physics for Scientists and Engineers with Modern ...

Physics

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

Physics for Scientists and Engineers

Physics

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning