Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 33, Problem 21P
To determine
The maximum distance a binary star system resolvable of human eye.
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Please answer both:The brightest star in the Pointers is α Centauri. It is actually a binary star, with two components known as α Cen A and α Cen B.
They orbit each other for a period of about 80 years. At the moment they are separated by about 5 arcseconds in the sky.
a) The average eye has a pupil diameter of 3mm, increasing to about 7mm at night. What is the theoretical best resolution for the human eye, at 500 nm? (Enter your answer in arc seconds, to the nearest whole number)
b) Could you separate the two components with your naked eye (at 500 nm)?
There is a light source provide 2000 lumens, which illuminates a surface given with a length of 9 m and width of 8m. What is the illuminance average of the surface( answer must be in lux)
A point light source of 100 candela (I) is suspended 2
meters above the center of a circular table having a
diameter of 2 meters. Estimate the illuminance (E) at the
center; (ii) the perimeter of the table.
(a)
-r is the distance from the light source
Chapter 33 Solutions
Physics for Scientists and Engineers
Ch. 33 - Prob. 1PCh. 33 - Prob. 2PCh. 33 - Prob. 3PCh. 33 - Prob. 4PCh. 33 - Prob. 5PCh. 33 - Prob. 6PCh. 33 - Prob. 7PCh. 33 - Prob. 8PCh. 33 - Prob. 9PCh. 33 - Prob. 10P
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