If the velocity potential in an inviscid flow is given by ? = Ay , where A is a constant, the stream function is:
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For the material in Problem 6.1:
(a) Calculate the change in radius of the specimen while subject to the stress. Assume that the deformation of this specimen is elastic and that Poisson’s ratio is equal to 0.29. (b) Is there any significant difference between the true stress and the engineering stress calculated in Problem 6.1? (c) Calculate the true strain for this application and compare it to the engineering strain calculated in Problem 6.1.
Standing Sound Waves: In a resonating pipe that is open at one end and closed at the other, there
A. are displacement nodes at each end. B. are displacement antinodes at each end. C. is a displacement node at the open end and a displacement antinode at the closed end. D. is a displacement node at the closed end and a displacement antinode at the open end.
Why do disks form around young stars?
A) The surrounding gas can only approach the star from a single direction. B) Collisions between gas particles flatten the rotating gas cloud. C) The rotation of the cloud causes gas to be spun outward from the central star. D) Intense winds from nearby massive stars flatten the gas cloud.
Diffraction Gratings: If a diffraction grating is heated (without damaging it) and therefore expands, what happens to the angular location of the first-order maximum?
A. It moves toward the centerline. B. It moves away from the centerline. C. It doesn't change.