Day 2 thermal expansion

This is an experiment we try to find the coefficient of the thermal expansion with the length change, temperature change and the angle change of the pulley.

This is the uncertainty of the coefficient of the thermal expansion, we measured from the lab above.

This graph shows the temperature change when we heat an ice-water mixture to boiling. The gray part is a linear function which is we predicted before, but the left part of the graph is not horizontal, which is strange and our group can't give the explanation.

This graph is our prediction of the temperature change of heating an ice-water mix to boiling before we start the experiment.

This is a practice we apply the heat of fusion. When it is experiencing the phase change, like ice melting into water, we need to consider the duration of melting also has heat transferred, and the amount of heat transferred each unit mass changed by 1`C is the heat of fusion.

This is the experiment from the lab manual to measure the pressure in the tube. We recorded the video, but I didn't get the video from the guy recorded it. We derive the formula of the water pressure first.

This is how we find uncertainty of the pressure. Since the only variable here is the height change, the large uncertainty is logical and make sense.