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The asteroid that exploded over Chelyabinsk, Russia, in 2012 (see Application on page

ISBN: 9780134202709 403

Solution for problem 45 Chapter 8

Essential University Physics | 3rd Edition

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Problem 45

The asteroid that exploded over Chelyabinsk, Russia, in 2012 (see Application on page 137) was moving at 35.5 km/s relative to the Sun just before it entered Earths atmosphere. Calculations based on orbital observations show that it was moving at 11.2 km/s at aphelion (its most distant point from the Sun). Find the distance at aphelion, expressed in astronomical units (1 AU is the average distance of Earth from the Sun; see Appendix E).

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10. Spaceship A, traveling past us at 0.7c, sends a message capsule to spaceship B, which is in front of A and is traveling in the same direction as A at 0.8c relative to us. The capsule travels at 0.95c relative to us. A clock that measures the proper time between the sending and receiving of the capsule travels: A. in the same direction as the spaceships at 0.7c relative...

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