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A jet-propelled airplane with a mass of 10 Mg is flying horizontally at a constant speed of 1000 km/h under the action of the engine thrust T and the equal and opposite air resistance R. The pilot ignites two rocket-assist units, each of which develops a forward thrust T0 of 8 kN for 9 s. If the velocity of the airplane in its horizontal flight is 1050 km/h at the end of the 9 s, calculate the timeaverage increase ?R in air resistance. The mass of the rocket fuel used is negligible compared with that of the airplane.
Prepare a Report on Production Welding Machines, Vertical Milling Machines, Turning Machines and Horizontal Milling Machines Rotary Tables & indexing Devices.
the steady state temperature distribution in a one-dimensional wall of thermal con- ductivity 50 wmk and thickness 50
a feed water pump operates with a flow rate of 350 kgs. the water enters at 420 k. the inlet pressure is 0.7 mpa and
two plates of 1040 steel are joined together by an aluminum rivet. discuss at least three forms of corrosion that could
Define the term duty cycle. How does a welder know what type of electrode he/she is using? What is arc blow? What special precautions must be taken if the welding leads must be temporarily run across an aisle
During the process, the pressure and specific volume are related by pv = constant. For the refrigerant, determine the work and heat transfer per unit mass, each in KJ/kg.
the girl at C stands pulls the rope horizontally at a constant speed of 6 ft/s. determine how fast the boat approcahes the pier at the instant the rope lenght AB is 50 ft.
how much computer memory in bytes would be required to store 10 seconds of a sensor signal sampled by a 12-bit ad
What is a typical direction of failure plane w.r.t the direction of loading axis when a brittle material is loaded under?
What is the distinguishing operational environment of direct liquefaction and what dictates this condition? Delineate the four operational regimes of hydrothermal processing and indicate differences in the products resulting.
the corresponding rankine cycle for an actural power plantusing water runs at a high pressure of 6.3mpa a low pressure
Water flows downward through a vertical smooth pipe (i.e., roughness = 0). When the flow rate is 0.5 ft3/s, there is no pressure change along the length of the pipe. What is the pipe diameter?
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