Answer all three parts of this question ( a,b and c) in their entirety. Q3 a) Explain your knowledge of the following methods used for the measurement of pressure: (i) Barometers (ii) Manometers (iii) Bourdon Gauges Q3 b) The pressure at the top of a 3,000m deep gas well is equal to 70 bar gauge. (iv)Taking into account the effect of depth on the density of a gas, calculate the pressure at the bottom of the well assuming an average temperature of 75C throughout. (v) If the temperatures at the top and bottom of the well are 50C and 90C respectively. Assuming that temperature varies linearly along the depth of the well, recalculate the pressure at the bottom of the well. Data The molecular mass of the gas - 19g/mol Q3 C) Using diagrams to assist you, explain your understanding of the stability of: (vi) Submerged Object (vii) Floating Objects These descriptions do not require detailed mathematical derivations but should demonstrate that you have an understanding of the key underlying concepts