Thursday, February 26, 2015

Temperature and Heat

Lab Day 1
Fahrenheit as a function of Celsius is shown in a linear relationship in the graph above and the uncertainty is found using standard deviations with 10 values.


Problem 2 white board calculations found the heat capacity C.


As the cold water is added into the aluminum can, the graph shows the conductivity process where there is an overlap where it crosses. In the first graph, equilibrium was reached in a regular mixing process in which in comparison, more energy evaporates with increasing time as seen in the second conductivity process graph. 


5 variables the rate of cooling depends on and 4 variables thermal conductivity depends on. 

Heat conductivity has the same flow rate everywhere. There is an increase in heat loss calculated in aluminum compared to copper. In this calculation it was actually (100-Tf ) which showed a decrease in temperature.


This graph shows the relationship between Heat in Joules and temperature in Celsius which can be broken down into an equation of y=mx +b.


We were able to analyze temperature and heat where we focused on the process of thermal conductivity through heat energy, heat flow, and heat conduction. We used conversions of temperature in Kelvin, Celsius, and Fahrenheit where we graphed to identify its relationship to heat energy, which can also be considered as the heat flow or current. In fact thermal resistance R was found to act as a thermal resistance where as the R increased, the heat flow decreased. The heat conductivity modeled with two joined bars of copper and aluminum yielded different values that reveals how there is more heat loss in aluminum compared to copper. The type of material and its heat capacity is a factor that determines its heat flow. In experiment we ran a mixing process with an aluminum can and water that showed two curves at opposite ends that reached equilibrium in temperature. Multiple factors take effect in this equilibrium as seen in the second experimental round where time was a major factor that manipulated the curve showing an obvious overlap due to the conductivity process in which the rate also changes. In fact heat conductivity has the same flow rate everywhere The specific heat is found to be useful in heat energy and the relationship of heat in temperature and joules was graphed to identity its correlation.