An hover craft vehicle operates by moving atmospheric air ( = 1.22 kg/m3 ) with a large fan through the skirt of the vehicle which creates a 3 cm clearance with the ground. If the vehicle weighs 50 kN find a) the required air volumetric flow rate and b) the fan power. (30.6 m3 /s, 54 kW)

Determine the stoichiometric and actual air-fuel ratios and the mole flue gas composition for combustion with 15% excess air for raw indiana, pennsylvania raw coal.

What is the correct way to measure the overall length of a boat? measure from the tip of the bow to the highest point on the gunwale. measure from the tip of the bow in a straight line to the stern of the boat. measure from the tip of the bow in a straight line to the back seat. measure from port to starboard at the boat's widest point.

Precipitation hardening can be achieved in many light alloys by a three-step heat treatment. what is carried out and what is the purpose at each step? why is such a treatment necessary based on the nucleation and growth theory of phase transformation. compare this treatment with tempering martensite for carbon steels (similarities and differences).