A plate and frame filter press with a single frame was used to carry out a test on calcite deposits suspended in water. The filtering area of the frame is 0.03 m2 and tests were carried out at a constant filtration pressure difference of 2.75 x 105 N m2 with a slurry containing 0.073 weight fraction calcite deposit. Test results are as follows: Volume of Time / s filtrate / m 0.0004 4.2 0.0008 11.2 0.0012 20.5 0.0016 33.4 0.0020 48.8 0.0024 67.2 0.0028 88.7 The density of the cake was measured to be 1600 kg/m2 Find: (a) The specific resistance of the cake