Data for pressure and height of air column in a tube is collected as given in table, p/105 Pa h/10- m 1.10 400 + 5 1.22 360 5 1.38 320 5 1.57 280 5 1.83 240 5 2.09 210 5 Calculate and record values of 1 Plot a graph of p/105 Pa against 1/m-1. Include error bars for h h Include the absolute uncertainties in Draw the straight line of best fit and a worst acceptable straight line on your graph. Both lines should be clearly labelled. Determine the gradient of the line of best fit. Include the uncertainty in your answer.