Physics coursework: Charles' Law.
Height of substance (mm)
Temperature (oC)
Experiment 1
Experiment 2
Experiment 3
Average
20
97
99
207
201
30
202
202
212
205
40
206
207
217
210
50
209
210
221
213
60
213
212
226
217
70
216
215
228
219
80
219
218
231
223
90
223
220
234
226
00
228
223
237
229
These are the raw details, which I have taken from my experiment. I need to work out the volume for each measurement taken, as this is the point in my experiment (being in Charles' law). I am going to work out the volume of the substance under the dyed sulphuric acid. To do this I need to use the ?r2h. I measured the radius to be 0.73mm (of the capillary). I need to turn the height into mm for the equation.
Table of volumes
Temperature (oC)
Equation (uses mm)
Av. Volume (mm3)
20
?*0.73 2*201
336
30
?*0.73 2*205
343
40
?*0.73 2*210
352
50
?*0.73 2*213
357
60
?*0.73 2*217
363
70
?*0.73 2*219
367
80
?*0.73 2*223
373
90
?*0.73 2*226
378
00
?*0.73 2*229
383
I think the results support my prediction however the last experiment seems to have given greater results than the others. I think this is because the sulphuric acid in the capillary takes a different amount of time to cool down as the thermometer (this suggest longer). I think I should have given it longer to cool down, this however would be hard as I had a limited time unless I did the experiments on different days, which would have aroused many other problems.
Height of substance (mm)
Temperature (oC)
Experiment 1
Experiment 2
Experiment 3
Average
20
97
99
207
201
30
202
202
212
205
40
206
207
217
210
50
209
210
221
213
60
213
212
226
217
70
216
215
228
219
80
219
218
231
223
90
223
220
234
226
00
228
223
237
229
These are the raw details, which I have taken from my experiment. I need to work out the volume for each measurement taken, as this is the point in my experiment (being in Charles' law). I am going to work out the volume of the substance under the dyed sulphuric acid. To do this I need to use the ?r2h. I measured the radius to be 0.73mm (of the capillary). I need to turn the height into mm for the equation.
Table of volumes
Temperature (oC)
Equation (uses mm)
Av. Volume (mm3)
20
?*0.73 2*201
336
30
?*0.73 2*205
343
40
?*0.73 2*210
352
50
?*0.73 2*213
357
60
?*0.73 2*217
363
70
?*0.73 2*219
367
80
?*0.73 2*223
373
90
?*0.73 2*226
378
00
?*0.73 2*229
383
I think the results support my prediction however the last experiment seems to have given greater results than the others. I think this is because the sulphuric acid in the capillary takes a different amount of time to cool down as the thermometer (this suggest longer). I think I should have given it longer to cool down, this however would be hard as I had a limited time unless I did the experiments on different days, which would have aroused many other problems.