A copper specimen is stressed in tension to 76×106 Pa and a total strain of 0.01; then the specimen is unloaded. We observe after the test that the deformation was uniform. Determine the expected recovered elastic strain and the permanent plastic strain.
What will be an ideal response?
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Radio dishes are large in order to
A) attract funding from NASA and the NSF. B) give greater magnification. C) increase their angular resolution and collect the very weak radio photons. D) increase the range of waves they can collect. E) detect shorter waves than optical telescopes for superior resolution.
What phase will the moon be in when it is between the Earth and the Sun
A. New moon B. Full moon C. First quarter D. Third quarter E. None of these
A 700-kg satellite is in an elliptical orbit around Earth with a perigee (the point of closest approach) of 7.50 × 106 m from the center of Earth and an apogee (the furthest point from the center of Earth) of 11.5 × 106 m
What is the total energy of the satellite? The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2. A) -4.51 × 1010 J B) -3.10 × 1010 J C) -2.08 × 1010 J D) -1.04 × 1010 J E) -1.47 × 1010J
Because he failed to observe stellar ________, Aristotle wrongly concluded we could not be in orbit around the Sun
Fill in the blank(s) with correct word