S the right ascensions of two stars at a location.

Name of star Right ascension
Star 1 2 hours
Star 2 4 hours 20 minutes

What is the degree difference between the two stars that rise at the location?

It's 35 degrees IF they have the same declination. If their declinations are different, then the angle between them can be anything from 35 degrees to 180 degrees.

learn it on the intertant so you can solve

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )