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Properties of stars to learn about parallax

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Question number 1

Go to section of your text on Properties of Stars to learn about parallax.

What is the distance from the Earth to a star if its parallax is 0.2 seconds of arc? Answer the distance in (a) parsecs, (b) light years, and (c) meters.  Show your work.

Question number 2

Wien's Law relates the wavelength of maximum radiation to the temperature of an object.  You can find an explanation in the section on Production of Light in your text.  Use the equation given in the figure. 

Calculate the temperature of a star that has its maximum flux at 200 nanometers (nm).

Question 3

Please expand that equation

4 x 1026 watts =4 π x(7 x 108 m)2 x5.67 x 10-8x Τ 4

T= 5,817.9K

Question 4

Please expand that equation

B= 4.0 x 1026 W/ 4pi(1.5x10^11m)^2

B=1,414.7W/m^2

Reference no: EM132450482

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