Use data from Table 31.1 to determine, to two significant figures: a. The distance of Sirius from
Question:
Use data from Table 31.1 to determine, to two significant figures:
a. The distance of Sirius from the Earth in metres.
b. The luminosity (in W) of
i. Canopus
ii. Vega.
c. The radiant flux intensity measured at the Earth from:
i. Sirius
ii. Alpha Centauri.
Where necessary, take:
L⊙ = 3.83 × 1026 W
1 ly ≈ 9.5 × 1015 m
Transcribed Image Text:
Rank order Name of star Distance / light- Temperature /K Luminosity / L. years 1 Sun 1.58 x 10-5 5800 1.0 Sirius 8.6 9900 25 Canopus 310 7000 1100 Alpha Centauri 4.4 5800 1.5 Arcturus 37 4300 170 6. 25 9600 40 Vega
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Related Book For
Cambridge International AS And A Level Physics Coursebook
ISBN: 9781108859035
3rd Edition
Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside
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