A : To investigate how P varies with Q keeping Z constant
1. Set up
2. Measure P using M
3. Measure Q using N
4. Repeat steps 2 to 3 by varying P to obtain 6 sets of P and Q keeping Z constant.
5. Calculate R using the formula ...
6. Plot a graph of ln P vs ln Q assuming .....the gradient = n and intercept = lnk
D: Safety precautions
1.How you measure P and Q accurately
2.How you keep Z constant .
3.Any other variables kept constant.
4.Check question for any unanswered parts from a) to e) .