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Question: Air is flowing through a wide channel at Mach 2 at a pressure of 140 kPa. The upper wall of the channel turns through an angle of 8° "away" from the flow leading to the generation of an expansion wave, whereas the lower wall of the channel turns through an angle of 6° "away" from the flow, also leading to the generation of an expansion wave. The two expansion waves interact and "pass through" each other. Find the Mach number, flow direction, and pressure just downstream of this interaction.
An astronomical telescope for hobbyists has an angular magnification of -130. The eyepiece has a focal length of 5.50 mm. how long is the telescope
a gymnast of mass 57.0 kg hangs from a vertical rope attached to the ceiling. you can ignore the weight of the rope and
a gas is admitted to an evacuated 2m3 container at 320 k the gas then undergoes an isobaric expansion to a volume of
Suppose we wish to create a vector of zeros using a variable sampling rate Fs. i) If we want the vector to have a duration of 5 seconds (starting at time t = 0), what is the formula for the number of samples nz we need in terms of Fs?
In a cement mixer, cement, gravel and water are mixed by tumbling in a slowly rotating drum. Calculate the maximum angular speed for which the materials will mix
initially 0.05 kg of air is contained in a piston-cylinder device at 200 degc and 1.6 mpa. the air then expands at
A basketball player jumps straight up and then lands 0.49 seconds after leaving the ground. Find the initial velocity of the player
A rectangular coil in the plane of the page has dimensions a = 46.00 m and b = 80.00 m. A long wire that carries a current I = 4.50 A is placed directly above the coil. For what value of x is magnitude of flux through the coil a minimum.
Two non-conducting infinite planes of uniform surface charge ?1 = 13.11 µC/m2 and ?2 = ?3.5 µC/m2 are parallel to each other and d = 0.129 m apart, What is the electric field outside the planes, at A
Find the wavelengths of these extremes at a temperature. find out the force exerted by the man on the rope, and the work done in dragging the box over a distance of 15m.
Just before a baseball is hit by a bat, it has a velocity of 30 m/s, 15 º below the pos x-axis. what is the magnitude of the average acceleration
Determine the magnitudes and directions of the currents in each resistor shown in Fig. 19-48. The batteries have emfs of 1 = 9.0 V and 2 = 13.0 V and the resistors have values of R1 = 15 , R2 = 20 , and R3 = 31 .
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