NASA is sending a probe to Alpha Centauri and then to Sirius. A problem with the probe is noticed while it is at Alpha Centauri, so it must go back to Earth before going to Sirius. Alpha Centauri is 4.3 light-years away from Earth and Sirius is 8.6 light-years away. The probe is traveling at 18.03 km/s, there are 9.461 x 10 meters in one light-year, and there are 1.58125 x 10 light-years in one astronomical unit. How long will the probe have been traveling from when it first leaves Earth to when it arrives at Sirius? Given the above problem, which of these expressions will most likely be your student's first correct step? a) 40.6823 x 1015 m + 81.3646 x 1015 m b) 4.06823 x 10 m + 8.13646 x 10° m c) 81.3646 x 1016 m + 81.3646 x 1015 m d) 8.13646 x 10 m + 8.13646 x 1016 m e) Answer is not there
NASA is sending a probe to Alpha Centauri and then to Sirius. A problem with the probe is noticed while it is at Alpha Centauri, so it must go back to Earth before going to Sirius. Alpha Centauri is 4.3 light-years away from Earth and Sirius is 8.6 light-years away. The probe is traveling at 18.03 km/s, there are 9.461 x 10 meters in one light-year, and there are 1.58125 x 10 light-years in one astronomical unit. How long will the probe have been traveling from when it first leaves Earth to when it arrives at Sirius? Given the above problem, which of these expressions will most likely be your student's first correct step? a) 40.6823 x 1015 m + 81.3646 x 1015 m b) 4.06823 x 10 m + 8.13646 x 10° m c) 81.3646 x 1016 m + 81.3646 x 1015 m d) 8.13646 x 10 m + 8.13646 x 1016 m e) Answer is not there
Astronomy
1st Edition
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Chapter19: Celestial Distances
Section: Chapter Questions
Problem 34E: Gaia will have greatly improved precision over the measurements of Hipparcos. The average...
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