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1. The upstream and downstream isentropic stagnation pressures across a normal shock wave in air are measured and found to be 124.6801 kPa and 0.101325 MPa, respectively. Determine the upstream and downstream Mach numbers and static pressure and temperature ratios across the shock wave.
2. A converging-diverging nozzle has an exit to throat area ratio of 2.00. The inlet isentropic stagnation air pressure is 2.00 atm and the exit static pressure is 1.00 atm. This flow is supersonic in a portion of the nozzle, terminating in a normal shock inside the nozzle. Determine the local area ratio A/A*at which the shock occurs.
Current density is a measure of the amount of current flowing through a volume. The conventional direction of current is the hypotheticaldirection of movement of positive charges through the wires of anelectric circuit. Through a certain cross-sectio..
A firefighter mounts the nozzle of his fire hose a distance 40.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. By what factor was the nozzle diameter changed
The surface between a 12kg block , the 16kg wedge and between 16 kg wedge and the horizontal plane are smoothe, What is the force F which must be exerted on the 16 kg block in order that the 12 kg block
your sister wants to participate in the yearly science fair at her high school and asks you to suggest some exciting
Two unequal masses are hung from the ends of a rope that runs over a pulley. What is the acceleration of the smaller mass
A small block with mass 0.221 kg is sliding down a frictionless ramp that is inclined at an angle of 53.1° above the horizontal. Assume g = 9.80 m/s2. As the object slides down the incline, what is the magnitude of the normal force that the surfac..
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
A 3 μF and a 4 μF capacitor are connected in series, and this combination is connected in parallel with 2 μF capacitor. Determine what is the net capacitance
Consider a case where if the reaction is exothermic, the equation you have derived will support what you know of Le Chatelier's principle
A 94.0 cm pendulum is released from a small angle. After 113 oscillations the amplitude is one half of its original value. The damping is proportional to the speed of the pendulum bob. Find the value of the damping coefficient, ?, (in Hz).
a uniform electric field of magnitude 390 nc pointing in the positive x-direction acts on an electron which is
A 0.075 kilogram toy airplane is tied to the ceiling with a string. When the airplane's motor is started, Calculate the angle the string makes with the vertical
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