Author Question: The approximate main-sequence lifetime of a star of spectral type O is ________. A) 300 million ... (Read 53 times)

mrsjacobs44 · **on:** Jul 27, 2018

The approximate main-sequence lifetime of a star of spectral type O is ________.

A) 300 million years B) 10 billion years C) 10,000 years D) 3 million years

Question 2

Stefan's law notes that total energy radiated is proportional to the ________ power of the temperature of the blackbody.

Fill in the blank(s) with correct word