Joseph Lister's contribution was
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Joseph Lister pioneered safe surgical techniques and antiseptic. He is considered the father of modern surgery.
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An aircraft undergoes a constant acceleration of 11 m/s2 for 12 seconds. The distance traveled is __________
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Find the tension in an elevator cable if the 1000-kg elevator is ascending with an acceleration of 1.2 m/s2, upward
a. 11,000 N c. 8600 N b. 9800 N d. 1200 N
What does the equivalence principle say?
A) Gravity is the same thing as curvature of spacetime. B) The effects of gravity are exactly equivalent to the effects of acceleration. C) You cannot distinguish between motion at constant velocity and weight in a gravitational field. D) The effects of relativity are exactly equivalent to those predicted by Newton's laws of motion. E) All observers must always measure the same (equivalent) weights for moving objects.
Optical fibers work because of __________
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