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courses:phy101l:6 [2023/11/18 20:14] asadcourses:phy101l:6 [2023/12/07 05:51] (current) asad
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 ===== - Introduction ===== ===== - Introduction =====
 +The goal of this experiment is to measure the **rate of heat transfer** of copper and steel and compare. The rate of heat transfer
 +
 +$$ H = \frac{k A \Delta T}{L} $$
 +
 +where $k$ is **thermal conductivity** which has the units [W m$^{-1}$ K$^{-1}$], $A$ is the cross-sectional area of the conductor, $L$ is its length and $\Delta T$ is the difference in temperature between the two ends of the conductor.
 +
 +The thermal conductivity of copper and steel are given below.
 +
 +^ Material ^ Thermal conductivity [W m$^{-1}$ K$^{-1}$] ^
 +| Copper (Cu) | $401$ |
 +| Steel (Fe+C) | $14$ |
  
 ===== - Method and data ===== ===== - Method and data =====
 +==== - List of apparatus ====
 +  - Beaker
 +  - Thermometer
 +  - Substance (Copper, Steel)
 +  - Weighing scale
 +  - Water (20 ml)
 +
 +==== - Setup and Procedure ====
 +
 +Using a Vernier calipers measure the radius of the rods and from the radius ($r$) calculate $A=\pi r^2$.
 +
 +Using a thread and a meter scale measure the length $L$ of the rods.
 +
 +==== - Data table ====
 +Measure the temperature changes and note down in the following table.
 +
 +^ Time [minute] ^ Temperature of Copper [$^\circ$C] ^ Temperature of Steel [$^\circ$C] ^
 +| 0 |  |  |
 +| 1 |  |  |
 +| 2 |  |  |
 +| 3 |  |  |
 +| 4 |  |  |
 +| 5 |  |  |
 +
  
 ===== - Graphical analysis ===== ===== - Graphical analysis =====
  
 ===== - Heat transfer ===== ===== - Heat transfer =====
 +Compare $H_c$ and $H_s$ in units of J min$^{-1}$.
 ===== - Discussion and conclusion ===== ===== - Discussion and conclusion =====
  
courses/phy101l/6.1700363667.txt.gz · Last modified: by asad

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