Anew blimp will move at 15 ft/s in 40°f air. a 1: 12 scale model is used in a water tunnel where a drag force of 100 lbs was measured. what is the appropriate water velocity to use in the water tunnel (in ft/s)? what is the expected drag force on the actual blimp (in lbs)? what power will be required to propel the actual blimp through the air (in hp)?

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.