Find the approximate mass of the luminous matter in the
Milky Way galaxy, given it has approximately $10^{11}$ stars of
average mass 1.5 times that of our Sun.
OpenStax College Physics Solution, Chapter 34, Problem 1 (Problems & Exercises) (0:31)
Rating
Quiz Mode
Why is this button here? Quiz Mode is a chance to try solving the problem first
on your own before viewing the solution. One of the following will probably happen:
You get the answer. Congratulations! It feels good! There might still
be more to learn, and you might enjoy comparing your problem solving approach to the
best practices demonstrated in the solution video.
You don't get the answer. This is OK! In fact it's awesome, despite the difficult
feelings you might have about it. When you don't get the answer, your mind is ready for learning.
Think about how much you really want the solution! Your mind will gobble it up
when it sees it. Attempting the problem is like trying to assemble the pieces of a puzzle.
If you don't get the answer, the gaps in the puzzle are questions that are ready and
searching to be filled. This is an active process, where your mind is turned on -
learning will happen!
If you wish to show the answer immediately without having to click "Reveal Answer", you may
create a free account.
Quiz Mode is disabled by default, but you can check the Enable Quiz Mode checkbox when editing your profile to
re-enable it any time you want.
College Physics Answers cares a lot about academic integrity. Quiz Mode
is encouragement to use the solutions in a way that is most beneficial for your learning.
