Academics – Mathematics : 2020/AUG/05
Question
Q5. (a) During a gas engine test, of a given mass of gas contained in a cylinder, the values of pressure P (kPa) and the volume V (m3) were recorder as shown in table Q5.
Plot a straight - line graph to verify that the relationship between P and V is the gas law PVn = C, where n and C are constants. (10)
| P | 100 | 80 | 60 | 40 | 20 |
| V | 1.000 | 1.173 | 1.440 | 1.924 | 3.157 |
Suggested scales horizontal axis 2 cm = 0.1
Vertical axis 2 cm = 0.1
(b) Use the graph plotted in Q5(a) to estimate the value of n and C (6)
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