3) a. Calculate the pressure that one feels in Pascals at sea level due to the atmosphere. Assume that the atmosphere is uniformly dense at 1.21 kg/m3, the height of the atmosphere is 10km, and g = 9.8 m/s2.
b. Do the same calculation in English units and express as psi (lbf/in2). Note that 1 kg = 2.2 lbm, 1 m = 3.28 ft, and g = 32.2 ft/s2.