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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.
an air conditioning system is to be filled from a rigid container. the container initially contains 4 kg of saturated
steam enters an adiabatic turbine steadily at 7 mpa 500 degrees c and leaves at 100 kpa. if the mass flow rate is 6.2
the acceleration of the particle is defined by the relation a 25-3x2 where a is expressed in msec2 and x in meters. the
a small 6-mm diameter pin was designed using astm no. 40 cast iron to withstand an axial compressive load of 3.5kn
Find the equation of a Hermite cubic spline that passes through points (1, 1) and (3, 2) and whose tangent vectors are as follows: Sketch the curve and the blending functions for the defining points and vectors of a parametric cubic curve.
Consider the flow of clockwise vortex of circulation gamma and a source of strength Q, both located at the origin. Show that the result is a spiral flow in which the velocity is everywhere inclined at the same angle to the radius vector from the orig..
Air initially at 290 K, 1 bar undergoes the following processes: polytropic compression to 5 bar with n = 1.19 and isentropic expansion to 1 bar. Sketch the processes on a T-s diagram, Determine the temperature of state 2 and
Energy in the home, personal energy use and home energy efficiency and Efficient use of ‘waste' heat and renewable heat sources
G11 Hockey player A carries the puck on his stick and moves in the direction shown with a speed vA = 4 m/s. In passing the puck to his stationary teammate B, he launches the puck at angle α =15' (60° from horizontal) and at a speed of 8 m/s relati..
A rock of mass 0.5 lbm moves at a velocity of 2,000ft/s. It comes to a standstill in a gallon of water, which weighs 8.34 lbf. What is the temperature rise of water?
A pump is employed to deliver liquid water from a pond to a higher elevation. The pump steadily draws water from the pond at a volumetric flow rate of 192 gal/min through a pipe having a 7 in. diameter inlet. The exit diameter of the pipe is 2 in. an..
a brayton cycle is the same as the rankine cycle but it takes place in the ideal gas region of states. a large
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