Author Question: Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ... (Read 140 times)

go.lag · **on:** Jul 27, 2018

Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are:

A) in the giant region.
B) in the supergiant region.
C) on the random sequence.
D) on the main sequence.

Question 2

Which of the following systems cannot be analyzed as a visual binary?

A) Binary stars that are separately visible in a telescope
B) Binary stars that are about 2 AU apart
C) Binary star systems having orbital periods of hundreds or thousands of years
D) Binary stars orbiting so close to each other that they are not visible as separate stars

xoxo123 · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

D

Answer to Question 2

D

go.lag · **Reply #2 on:** Jul 27, 2018

Thanks

xoxo123 · **Reply #3 on:** Jul 27, 2018

Welcome

Author Question: Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ... (Read 140 times)

go.lag

Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ...

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xoxo123

Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ...

go.lag

Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ...

xoxo123

Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ...