7. The standard barometric pressure at sea level is 14.7 psia. (a) Determine the pressure on the mountain top having an elevation of 30,000 ft. above sea level. The average air density between sea level and the mountain top can be assumed to be a constant value of 0.5 lbm/ft. (b) Determine the pressure at the bottom. of sea having a depth of 1300 ft. Take the water density to be 62.4 lb/ft. Neglect variations in gravitational acceleration. 8. The observed weight of a piece of metal in a satellite is 1.3 kg, where the local acceleration of gravity is 2.99 in/s. Compute the mass of the metal in kgm. How much will the metal weigh on earth? m 9. On the surface of the moon a 12 lb, gas occupy a volume of 40 ft and the local acceleration of gravity is 5.47 ft/s. For the gas, compute the ff; (a) specific volume, (b) the density, and (c) the specific weight. 10. What is the weight of an 8 pound mass at standard gravity in Newton, dynes and lbf?